10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 10-Q

(Mark One)
ý	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the Quarterly Period Ended March 31, 2019
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 1-13045

IRON MOUNTAIN INCORPORATED

(Exact Name of Registrant as Specified in Its Charter)

Delaware (State or other Jurisdiction of Incorporation or Organization) 23-2588479 (I.R.S. Employer Identification No.)

One Federal Street, Boston, Massachusetts 02110

(Address of Principal Executive Offices, Including Zip Code)

(617) 535-4766

(Registrant's Telephone Number, Including Area Code)

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ý    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 during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ý    No o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, 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. (Check one):

Large accelerated filer ý Accelerated filer o Non-accelerated filer o Smaller reporting company o Emerging growth company o

If 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). Yes o    No ý

Number of shares of the registrant's Common Stock outstanding at April 19, 2019: 286,880,641

IRON MOUNTAIN INCORPORATED

Index

	Page
PART I—FINANCIAL INFORMATION
Item 1—Unaudited Condensed Consolidated Financial Statements	3
Condensed Consolidated Balance Sheets at March 31, 2019 and December 31, 2018	3
Condensed Consolidated Statements of Operations for the Three Months Ended March 31, 2019 and 2018	4
Condensed Consolidated Statements of Comprehensive Income (Loss) for the Three Months Ended March 31, 2019 and 2018	5
Condensed Consolidated Statements of Equity for the Three Months Ended March 31, 2019 and 2018	6
Condensed Consolidated Statements of Cash Flows for the Three Months Ended March 31, 2019 and 2018	7
Notes to Condensed Consolidated Financial Statements (Unaudited)	8
Item 2—Management's Discussion and Analysis of Financial Condition and Results of Operations	43
Item 4—Controls and Procedures	69
PART II—OTHER INFORMATION
Item 2—Unregistered Sales of Equity Securities and Use of Proceeds	70
Item 6—Exhibits	70
Signatures	71

2

Part I. Financial Information

Item 1.    Unaudited Condensed Consolidated Financial Statements

IRON MOUNTAIN INCORPORATED

CONDENSED CONSOLIDATED BALANCE SHEETS

(In Thousands, except Share and Per Share Data)

(Unaudited)

	March 31, 2019			December 31, 2018
ASSETS
Current Assets:
Cash and cash equivalents	$	161,475		$	165,485
Accounts receivable (less allowances of $42,074 and $43,584 as of March 31, 2019 and December 31, 2018, respectively)	837,521			846,889
Prepaid expenses and other	210,854			195,740
Total Current Assets	1,209,850			1,208,114
Property, Plant and Equipment:
Property, plant and equipment	7,738,705			7,600,949
Less—Accumulated depreciation	(3,213,122		)	(3,111,392		)
Property, Plant and Equipment, Net	4,525,583			4,489,557
Other Assets, Net:
Goodwill	4,465,378			4,441,030
Customer relationships, customer inducements and data center lease-based intangibles	1,495,338			1,506,522
Operating lease right-of-use assets (see Note 2.d.)	1,791,536			—
Other	201,678			207,024
Total Other Assets, Net	7,953,930			6,154,576
Total Assets	$	13,689,363		$	11,852,247
LIABILITIES AND EQUITY
Current Liabilities:
Current portion of long-term debt	$	125,142		$	126,406
Accounts payable	283,709			318,765
Accrued expenses and other current liabilities (includes current portion of operating lease liabilities, see Note 2.d.)	839,968			752,684
Deferred revenue	266,314			264,823
Total Current Liabilities	1,515,133			1,462,678
Long-term Debt, net of current portion	8,365,737			8,016,417
Long-term Operating Lease Liabilities, net of current portion (see Note 2.d.)	1,656,659			—
Other Long-term Liabilities	127,127			111,331
Deferred Rent (see Note 2.d.)	—			121,864
Deferred Income Taxes	190,871			183,836
Commitments and Contingencies (see Note 7)
Redeemable Noncontrolling Interests	73,102			70,532
Equity:
Iron Mountain Incorporated Stockholders' Equity:
Preferred stock (par value $0.01; authorized 10,000,000 shares; none issued and outstanding)	—			—
Common stock (par value $0.01; authorized 400,000,000 shares; issued and outstanding 286,829,854 and 286,321,009 shares as of March 31, 2019 and December 31, 2018, respectively)	2,868			2,863
Additional paid-in capital	4,264,978			4,263,348
(Distributions in excess of earnings) Earnings in excess of distributions	(2,257,485		)	(2,116,367		)
Accumulated other comprehensive items, net	(250,960		)	(265,664		)
Total Iron Mountain Incorporated Stockholders' Equity	1,759,401			1,884,180
Noncontrolling Interests	1,333			1,409
Total Equity	1,760,734			1,885,589
Total Liabilities and Equity	$	13,689,363		$	11,852,247

The accompanying notes are an integral part of these condensed consolidated financial statements.

3

IRON MOUNTAIN INCORPORATED

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(In Thousands, except Per Share Data)

(Unaudited)

	Three Months Ended March 31,
	2019			2018
Revenues:
Storage rental	$	662,974		$	651,149
Service	390,889			391,309
Total Revenues	1,053,863			1,042,458
Operating Expenses:
Cost of sales (excluding depreciation and amortization)	461,544			448,721
Selling, general and administrative	270,559			269,730
Depreciation and amortization	162,483			160,578
Loss (Gain) on disposal/write-down of property, plant and equipment, net (see Note 2.l.)	602			(1,130		)
Total Operating Expenses	895,188			877,899
Operating Income (Loss)	158,675			164,559
Interest Expense, Net (includes Interest Income of $1,785 and $1,386 for the three months ended March 31, 2019 and 2018, respectively)	102,436			97,626
Other Expense (Income), Net	15,210			20,151
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes	41,029			46,782
Provision (Benefit) for Income Taxes	10,553			1,168
Income (Loss) from Continuing Operations	30,476			45,614
(Loss) Income from Discontinued Operations, Net of Tax	(24		)	(462		)
Net Income (Loss)	30,452			45,152
Less: Net Income (Loss) Attributable to Noncontrolling Interests	891			468
Net Income (Loss) Attributable to Iron Mountain Incorporated	$	29,561		$	44,684
Earnings (Losses) per Share—Basic:
Income (Loss) from Continuing Operations	$	0.10		$	0.16
Total (Loss) Income from Discontinued Operations, Net of Tax	$	—		$	—
Net Income (Loss) Attributable to Iron Mountain Incorporated	$	0.10		$	0.16
Earnings (Losses) per Share—Diluted:
Income (Loss) from Continuing Operations	$	0.10		$	0.16
Total (Loss) Income from Discontinued Operations, Net of Tax	$	—		$	—
Net Income (Loss) Attributable to Iron Mountain Incorporated	$	0.10		$	0.16
Weighted Average Common Shares Outstanding—Basic	286,528			285,259
Weighted Average Common Shares Outstanding—Diluted	287,492			285,993

The accompanying notes are an integral part of these condensed consolidated financial statements.

4

IRON MOUNTAIN INCORPORATED

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

(In Thousands)

(Unaudited)

	Three Months Ended March 31,
	2019			2018
Net Income (Loss)	$	30,452		$	45,152
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustment	18,191			31,651
Change in Fair Value of Interest Rate Swap Agreements	(2,674		)	(185		)
Total Other Comprehensive Income (Loss)	15,517			31,466
Comprehensive Income (Loss)	45,969			76,618
Comprehensive Income (Loss) Attributable to Noncontrolling Interests	1,704			2,027
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	$	44,265		$	74,591

The accompanying notes are an integral part of these condensed consolidated financial statements.

5

IRON MOUNTAIN INCORPORATED

CONDENSED CONSOLIDATED STATEMENTS OF EQUITY

(In Thousands, except Share Data)

(Unaudited)

				Iron Mountain Incorporated Stockholders' Equity
				Common Stock			Additional Paid-in Capital			(Distributions in Excess of Earnings) Earnings in Excess of Distributions						Noncontrolling Interests
	Total			Shares	Amounts								Accumulated Other Comprehensive Items, Net						Redeemable Noncontrolling Interests
Balance, December 31, 2017	$	2,298,842		283,110,183	$	2,831	$	4,164,562		$	(1,765,966	)	$	(103,989	)	$	1,404		$	91,418
Cumulative-effect adjustment for adoption of ASU 2014-09 (see Note 2.c.)	(29,461		)	—	—		—			(29,461		)	—			—			—
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation	1,432			364,736	4		1,428			—			—			—			—
Issuance of shares associated with the Over-Allotment Option, net of underwriting discounts and offering expenses (see Note 12 to Notes to Consolidated Financial Statements included in our Annual Report)	76,192			2,175,000	22		76,170			—			—			—			—
Issuance of shares through the At the Market (ATM) Equity Program, net of underwriting discounts and offering expenses (see Note 8)	8,716			273,486	2		8,714			—			—			—			—
Change in value of redeemable noncontrolling interests	(117		)	—	—		(117		)	—			—			—			117
Parent cash dividends declared (see Note 8)	(169,044		)	—	—		—			(169,044		)	—			—			—
Foreign currency translation adjustment	30,246			—	—		—			—			30,092			154			1,405
Change in fair value of interest rate swap agreements	(185		)	—	—		—			—			(185		)	—			—
Net income (loss)	44,654			—	—		—			44,684			—			(30		)	498
Noncontrolling interests dividends	—			—	—		—			—			—			—			(561		)
Balance, March 31, 2018	$	2,261,275		285,923,405	$	2,859	$	4,250,757		$	(1,919,787	)	$	(74,082	)	$	1,528		$	92,877

				Iron Mountain Incorporated Stockholders' Equity
				Common Stock			Additional Paid-in Capital			(Distributions in Excess of Earnings) Earnings in Excess of Distributions						Noncontrolling Interests
	Total			Shares	Amounts								Accumulated Other Comprehensive Items, Net						Redeemable Noncontrolling Interests
Balance, December 31, 2018	$	1,885,589		286,321,009	$	2,863	$	4,263,348		$	(2,116,367	)	$	(265,664	)	$	1,409		$	70,532
Cumulative-effect adjustment for adoption of ASU 2016-02 (see Note 2.d.)	5,781			—	—		—			5,781			—			—			—
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation	2,923			508,845	5		2,918			—			—			—			—
Change in equity related to redeemable noncontrolling interests	(1,288		)	—	—		(1,288		)	—			—			—			1,288
Parent cash dividends declared (see Note 8)	(176,460		)	—	—		—			(176,460		)	—			—			—
Foreign currency translation adjustment	17,378			—	—		—			—			17,378			—			813
Change in fair value of interest rate swap agreements	(2,674		)	—	—		—			—			(2,674		)	—
Net income (loss)	29,485			—	—		—			29,561			—			(76		)	967
Noncontrolling interests dividends	—			—	—		—			—			—			—			(498		)
Balance, March 31, 2019	$	1,760,734		286,829,854	$	2,868	$	4,264,978		$	(2,257,485	)	$	(250,960	)	$	1,333		$	73,102

The accompanying notes are an integral part of these condensed consolidated financial statements.

6

IRON MOUNTAIN INCORPORATED

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(In Thousands)

(Unaudited)

	Three Months Ended March 31,
	2019			2018
Cash Flows from Operating Activities:
Net income (loss)	$	30,452		$	45,152
Loss (income) from discontinued operations	24			462
Adjustments to reconcile net income (loss) to cash flows from operating activities:
Depreciation	114,611			113,432
Amortization (includes amortization of deferred financing costs and discounts of $4,108 and $3,553 for the three months ended March 31, 2019 and 2018, respectively)	51,980			50,699
Revenue reduction associated with amortization of customer inducements and above- and below-market leases	3,645			3,664
Stock-based compensation expense	8,519			7,384
Provision (benefit) for deferred income taxes	1,423			(387		)
Loss (gain) on disposal/write-down of property, plant and equipment, net (see Note 2.l.)	602			(1,130		)
Foreign currency transactions and other, net	11,707			23,530
(Increase) decrease in assets	(33,138		)	(74,884		)
(Decrease) increase in liabilities	(72,758		)	(76,354		)
Cash Flows from Operating Activities - Continuing Operations	117,067			91,568
Cash Flows from Operating Activities - Discontinued Operations	—			—
Cash Flows from Operating Activities	117,067			91,568
Cash Flows from Investing Activities:
Capital expenditures (see Liquidity and Capital Resources section of Management's Discussion & Analysis of Financial Condition and Results of Operations)	(184,765		)	(95,605		)
Cash paid for acquisitions, net of cash acquired	(39,423		)	(1,428,974		)
Acquisition of customer relationships	(23,934		)	(12,602		)
Customer inducements	(2,817		)	(130		)
Contract fulfillment costs and third-party commissions	(41,161		)	(5,314		)
Investments in joint ventures (see Note 9)	(19,222		)	—
Proceeds from sales of property and equipment and other, net	105			(19,387		)
Cash Flows from Investing Activities - Continuing Operations	(311,217		)	(1,562,012		)
Cash Flows from Investing Activities - Discontinued Operations	—			—
Cash Flows from Investing Activities	(311,217		)	(1,562,012		)
Cash Flows from Financing Activities:
Repayment of revolving credit facility, term loan facilities and other debt	(1,351,242		)	(4,410,656		)
Proceeds from revolving credit facility, term loan facilities and other debt	1,723,462			5,496,491
Debt repayment and equity distribution to noncontrolling interests	(498		)	(561		)
Parent cash dividends	(178,023		)	(169,006		)
Net proceeds associated with the Over-Allotment Option	—			76,192
Net proceeds associated with the At the Market (ATM) Program	—			8,716
Net (payments) proceeds associated with employee stock-based awards	(5,963		)	(5,950		)
Payment of debt financing and stock issuance costs	—			(9,974		)
Cash Flows from Financing Activities - Continuing Operations	187,736			985,252
Cash Flows from Financing Activities - Discontinued Operations	—			—
Cash Flows from Financing Activities	187,736			985,252
Effect of Exchange Rates on Cash and Cash Equivalents	2,404			1,984
(Decrease) Increase in Cash and Cash Equivalents	(4,010		)	(483,208		)
Cash and Cash Equivalents, including Restricted Cash, Beginning of Period	165,485			925,699
Cash and Cash Equivalents, including Restricted Cash, End of Period	$	161,475		$	442,491
Supplemental Information:
Cash Paid for Interest	$	136,667		$	122,027
Cash Paid for Income Taxes, Net	$	15,141		$	22,292
Non-Cash Investing and Financing Activities:
Financing Leases (see Note 2.d.)	$	7,523		$	13,877
Accrued Capital Expenditures	$	75,824		$	36,760
Accrued Purchase Price and Other Holdbacks	$	1,042		$	149
Dividends Payable	$	180,422		$	172,140

The accompanying notes are an integral part of these condensed consolidated financial statements.

7

IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(1) General

The interim condensed consolidated financial statements are presented herein and, in the opinion of management, reflect all adjustments of a normal recurring nature necessary for a fair presentation. Interim results are not necessarily indicative of results for a full year. Iron Mountain Incorporated, a Delaware corporation ("IMI"), and its subsidiaries ("we" or "us") provide storage of physical records and data backup media, information management solutions and enterprise-class colocation and wholesale data center space that help organizations in various locations throughout North America, Europe, Latin America, Asia and Africa. We offer comprehensive records and information management services and data management services, along with the expertise and experience to address complex storage and information management challenges such as rising storage rental costs, legal and regulatory compliance and disaster recovery requirements. We provide secure and reliable data center facilities to protect digital information and ensure the continued operation of our customers’ information technology infrastructure, with flexible deployment options, including both colocation and wholesale space.

The unaudited condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the United States Securities and Exchange Commission (the "SEC"). Certain information and footnote disclosures normally included in the annual financial statements prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") have been omitted pursuant to those rules and regulations, but we believe that the disclosures included herein are adequate to make the information presented not misleading. The Condensed Consolidated Financial Statements and Notes thereto, which are included herein, should be read in conjunction with the Consolidated Financial Statements and Notes thereto for the year ended December 31, 2018 included in our Annual Report on Form 10-K filed with the SEC on February 14, 2019 (our "Annual Report").

We have been organized and have operated as a real estate investment trust for United States federal income tax purposes ("REIT") beginning with our taxable year ended December 31, 2014.

On January 10, 2018, we completed the acquisition of IO Data Centers, LLC ("IODC") (the "IODC Transaction"). See Note 3.

On January 1, 2019, we adopted Accounting Standards Update ("ASU") No. 2016-02, Leases (Topic 842), as amended ("ASU 2016-02"). See Note 2.d.

(2) Summary of Significant Accounting Policies

This Note 2 to Notes to Condensed Consolidated Financial Statements provides information and disclosure regarding certain of our significant accounting policies and should be read in conjunction with Note 2 to Notes to Consolidated Financial Statements included in our Annual Report, which may provide additional information with regard to the accounting policies set forth herein and other of our significant accounting policies.

a.    Cash, Cash Equivalents and Restricted Cash

Cash and cash equivalents include cash on hand and cash invested in highly liquid short-term securities, which have remaining maturities at the date of purchase of less than 90 days. Cash and cash equivalents are carried at cost, which approximates fair value.

At March 31, 2019 and December 31, 2018, we had approximately $15,250 and $15,141, respectively, of restricted cash held by certain financial institutions related to bank guarantees.

8

IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(2) Summary of Significant Accounting Policies (Continued)

b.    Goodwill and Other Intangible Assets and Liabilities

Goodwill

Since December 31, 2018, there have been no changes to our accounting polices related to the accounting for goodwill. As of March 31, 2019 and December 31, 2018, no factors were identified that would alter our October 1, 2018 goodwill impairment analysis.

Our reporting units as of December 31, 2018 are described in detail in Note 2.h. to Notes to Consolidated Financial Statements included in our Annual Report. On March 19, 2019, we divested the business included in our former Consumer Storage reporting unit, which had no goodwill associated with it at December 31, 2018 or at the date of the divestment. See Note 9 for additional information.

The goodwill associated with acquisitions completed during the first three months of 2019 (which are described in Note 3) has been incorporated into our reporting units as they existed as of December 31, 2018.

The changes in the carrying value of goodwill attributable to each reportable operating segment for the three months ended March 31, 2019 are as follows:

	North American Records and Information Management Business		North American Data Management Business		Western European Business		Other International Business		Global Data Center Business			Corporate and Other Business			Total Consolidated
Goodwill balance, net of accumulated amortization as of December 31, 2018	$	2,251,795	$	493,491	$	381,806	$	818,223	$	425,956		$	69,759		$	4,441,030
Deductible goodwill acquired during the year	5,501		—		—		—		—			—			5,501
Non-deductible goodwill acquired during the year	—		—		4,991		3,767		—			1,874			10,632
Fair value and other adjustments(1)	31		—		92		3,350		(871		)	(468		)	2,134
Currency effects	3,921		1,067		1,393		1,126		(1,566		)	140			6,081
Goodwill balance, net accumulated amortization as of March 31, 2019	$	2,261,248	$	494,558	$	388,282	$	826,466	$	423,519		$	71,305		$	4,465,378
Accumulated Goodwill Impairment Balance as of December 31, 2018	$	85,909	$	—	$	46,500	$	—	$	—		$	3,011		$	135,420
Accumulated Goodwill Impairment Balance as of March 31, 2019	$	85,909	$	—	$	46,500	$	—	$	—		$	3,011		$	135,420

_______________________________________________________________________________

(1) Total fair value and other adjustments primarily include $2,565 in net adjustments related to property, plant and equipment, customer relationships and data center lease-based intangible assets and deferred income taxes and other liabilities offset by $431 of cash received related to certain acquisitions completed in 2018.

9

IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(2) Summary of Significant Accounting Policies (Continued)

Finite-lived Intangible Assets and Liabilities

Finite-lived intangible assets and liabilities are primarily comprised of customer relationship intangible assets, customer inducements and data center intangible assets and liabilities (which include data center in-place lease intangible assets, data center tenant relationship intangible assets, data center above-market in-place lease intangible assets and data center below-market in-place lease intangible assets). Since December 31, 2018, there have been no changes to our accounting policies related to the accounting for any of our finite-lived intangible assets and liabilities as disclosed in Note 2.i. to Notes to Consolidated Financial Statements included in our Annual Report.

The gross carrying amount and accumulated amortization of our finite-lived intangible assets as of March 31, 2019 and December 31, 2018 are as follows:

	March 31, 2019							December 31, 2018
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Assets:
Customer relationship intangible assets	$	1,754,794	$	(482,971	)	$	1,271,823	$	1,718,919	$	(455,705	)	$	1,263,214
Customer inducements	51,405		(28,711		)	22,694		56,478		(34,181		)	22,297
Data center lease-based intangible assets(1)	265,834		(65,013		)	200,821		271,818		(50,807		)	221,011
Third-party commissions asset(2)	30,861		(737		)	30,124		30,071		(1,089		)	28,982
	$	2,102,894	$	(577,432	)	$	1,525,462	$	2,077,286	$	(541,782	)	$	1,535,504
Liabilities:
Data center below-market leases	$	12,715	$	(2,451	)	$	10,264	$	12,318	$	(1,642	)	$	10,676

_______________________________________________________________________________

(1) Includes data center in-place lease intangible assets, data center tenant relationship intangible assets and data center above-market in-place lease intangible assets.

(2) Third-party commissions asset is included in Other, a component of Other assets, net in the accompanying Condensed Consolidated Balance Sheets as of March 31, 2019 and December 31, 2018. The third-party commissions asset is primarily comprised of additional payments associated with the execution of future customer contracts through the one-year anniversary of the acquisition of IODC, as described in Note 3.

Other finite-lived intangible assets, including trade names, noncompetition agreements and trademarks, are capitalized and amortized and are included in depreciation and amortization in the accompanying Condensed Consolidated Statements of Operations for the three months ended March 31, 2019 and 2018. The other finite-lived intangible assets as of March 31, 2019 and December 31, 2018 are as follows:

	March 31, 2019							December 31, 2018
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Other finite-lived intangible assets (included in Other, a component of other assets, net)	$	20,290	$	(15,794	)	$	4,496	$	20,310	$	(14,798	)	$	5,512

10

IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(2) Summary of Significant Accounting Policies (Continued)

Amortization expense associated with finite-lived intangible assets, revenue reduction associated with the amortization of customer inducements and net revenue reduction associated with the amortization of data center above-market leases and data center below-market leases for the three months ended March 31, 2019 and 2018 are as follows:

	Three Months Ended March 31,
	2019		2018
Amortization expense included in depreciation and amortization associated with:
Customer relationship and customer inducement intangible assets	$	27,881	$	28,806
Data center in-place leases and tenant relationships	12,609		10,838
Third-party commissions asset and other finite-lived intangible assets	757		1,185
Revenue reduction associated with amortization of:
Customer inducements	$	2,740	$	2,585
Data center above-market leases and data center below-market leases	905		1,079

c.    Revenues

Since December 31, 2018, there have been no changes to our accounting policies related to the accounting for revenues as disclosed in Note 2.l. to Notes to Consolidated Financial Statements included in our Annual Report.

The costs of the initial intake of customer records into physical storage ("Intake Costs") and capitalized commissions asset (collectively, "Contract Fulfillment Costs") as of March 31, 2019 and December 31, 2018 are as follows:

		March 31, 2019							December 31, 2018
Description	Location in Balance Sheet	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Intake Costs asset	Other (within Other Assets, Net)	$	36,155	$	(21,041	)	$	15,114	$	39,748	$	(24,504	)	$	15,244
Capitalized commissions asset	Other (within Other Assets, Net)	52,485		(24,923		)	27,562		58,424		(34,637		)	23,787

Amortization expense associated with the Intake Costs asset and capitalized commissions asset for the three months ended March 31, 2019 and 2018 are as follows:

	Three Months Ended March 31,
	2019		2018
Intake Costs asset	$	2,679	$	2,730
Capitalized commissions asset	3,946		3,587

11

IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(2) Summary of Significant Accounting Policies (Continued)

Deferred revenue liabilities are reflected as follows in our Condensed Consolidated Balance Sheets:

Description	Location in Balance Sheet	March 31, 2019		December 31, 2018
Deferred revenue - Current	Deferred revenue	$	266,314	$	264,823
Deferred revenue - Long-term	Other Long-term Liabilities	25,625		26,401

Data Center Lessor Considerations

Our data center business features storage rental provided to customers at contractually specified rates over a fixed contractual period. Prior to January 1, 2019, our data center revenue contracts were accounted for in accordance with Accounting Standards Codification (“ASC”) No. 840, Leases ("ASC 840"). On January 1, 2019, we adopted ASU 2016-02, as described in more detail in Note 2.d. Beginning on January 1, 2019, our data center revenue contracts will be accounted for in accordance with ASU 2016-02. ASU 2016-02 provides a practical expedient which allows lessors to account for nonlease components (such as power and connectivity, in the case of our data center business) with the related lease component if both the timing and pattern of transfer are the same for nonlease components and the lease component, and the lease component would be classified as an operating lease. The single combined component is accounted for under ASU 2016-02 if the lease component is the predominant component and is accounted for under ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) ("ASU 2014-09"), if the nonlease components are the predominant components. We have elected to take this practical expedient. Storage rental revenue associated with our data center business was $59,718 for the three months ended March 31, 2019, which includes approximately $9,100 of revenue associated with power and connectivity. The revenue related to the service component of our data center business remains unchanged from the adoption of ASU 2016-02 and is recognized in the period the related services are provided. Our accounting treatment for data center revenue was not significantly impacted by the adoption of ASU 2016-02.

d. Leases

We lease facilities for certain warehouses, data centers and office space. We also have land leases, including those on which certain facilities are located. The majority of our leased facilities are classified as operating leases that, on average, have initial lease terms of five to 10 years, with one or more lease renewal options to extend the lease term. Our lease renewal option terms generally range from one to five years. The exercise of the lease renewal option is at our sole discretion and may contain fixed rent, fair market value based rent or Consumer Price Index rent escalation clauses. We include option periods in the lease term when our failure to renew the lease would result in an economic disincentive, thereby making it reasonably certain that we will renew the lease. We recognize straight line rental expense over the life of the lease and any fair market value or Consumer Price Index rent escalations are recognized as variable lease expense in the period in which the obligation is incurred. In addition, we lease certain vehicles and equipment. Vehicle and equipment leases have lease terms ranging from one to seven years.

In February 2016, the Financial Accounting Standards Board ("FASB") issued ASU 2016-02, Leases (Topic 842) which requires lessees to recognize assets and liabilities on the balance sheet for the rights and obligations created by all leases, both operating and financing (formerly referred to as capital leases under ASC 840). ASU 2016-02 requires certain qualitative and quantitative disclosures designed to give financial statement users information on the amount, timing, and uncertainty of cash flows arising from leases.

12

IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(2) Summary of Significant Accounting Policies (Continued)

We adopted ASU 2016-02 on January 1, 2019 on a modified retrospective basis under which we recognized and measured leases existing at, or entered into after, the beginning of the period of adoption. Therefore, we applied ASC 840 to all earlier comparative periods (prior to the adoption of ASU 2016-02), including disclosures, and recognized the effects of applying ASU 2016-02 as a cumulative-effect adjustment to retained earnings as of January 1, 2019, the effective date of the standard. As such, the comparative Condensed Consolidated Balance Sheet as of December 31, 2018 has not been restated to reflect the adoption of ASU 2016-02. Accordingly, the majority of the amount presented as deferred rent liabilities on our Consolidated Balance Sheet as of December 31, 2018 is now included in the calculation of operating lease right-of-use assets and any remaining amounts are now classified within other liability line items on our Condensed Consolidated Balance Sheet as of March 31, 2019. The transition guidance associated with ASU 2016-02 also permitted certain practical expedients. We elected the "package of 3" practical expedients permitted under the transition guidance which, among other things, allowed us to carryforward our historical lease classifications. We also adopted an accounting policy which provides that leases with an initial term of 12 months or less will not be included within the lease right-of-use assets and lease liabilities recognized on our Condensed Consolidated Balance Sheets after the adoption of ASU 2016-02. We will continue to recognize the lease payments for those leases with an initial term of 12 months or less in the Consolidated Statements of Operations on a straight-line basis over the lease term.

The lease right-of-use assets and related lease liabilities are classified as either operating or financing. Lease right-of-use assets are calculated as the net present value of future payments plus any capitalized initial direct costs less any tenant improvements or lease incentives. Lease liabilities are calculated as the net present value of future payments. In calculating the present value of the lease payments, we will utilize the rate stated within the lease (in the limited circumstances when such rate is available) or, if no rate is explicitly stated, we have elected to utilize a rate that reflects our securitized incremental borrowing rate by geography for the lease term. In July 2018, the FASB issued ASU 2018-11, Leases - Targeted Improvements ("ASU 2018-11"). ASU 2018-11 provides a practical expedient which allows lessees to account for nonlease components (which include common area maintenance, taxes, and insurance) with the related lease component. Any variable nonlease components are not included within the lease right-of-use asset and lease liability on the Condensed Consolidated Balance Sheets, and instead, are reflected as an expense in the period incurred. We have elected to take this practical expedient upon adoption of ASU 2016-02.

At January 1, 2019, we recognized the cumulative effect of initially applying ASU 2016-02 as an adjustment to the opening balance of (distributions in excess of earnings) earnings in excess of distributions, resulting in an increase of approximately $5,800 to stockholders' equity due to certain build to suit leases that were accounted for as financing leases under ASC 840, Leases,but are accounted for as operating leases under ASU 2016-02 at January 1, 2019.

13

IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(2) Summary of Significant Accounting Policies (Continued)

Operating and financing lease right-of-use assets and lease liabilities as of March 31, 2019 and January 1, 2019 (date of adoption of ASU 2016-02) are as follows:

Description	Location in Balance Sheet	March 31, 2019		January 1, 2019 (Date of Adoption of ASU 2016-02)
Assets:
Operating lease right-of-use assets(1)	Operating lease right-of-use assets	$	1,791,536	$	1,825,721
Financing lease right-of-use assets, net of accumulated depreciation(2)	Property, plant and equipment, net	351,750		361,078
Total		$	2,143,286	$	2,186,799
Liabilities:
Current
Operating lease liabilities	Accrued expenses and other current liabilities	$	206,286	$	209,911
Financing lease liabilities	Current portion of long-term debt	51,222		50,437
Total current lease liabilities		257,508		260,348
Long-term
Operating lease liabilities	Long-term operating lease liabilities, net of current portion	1,656,659		1,685,771
Financing lease liabilities	Long-term Debt, net of current portion	338,728		350,263
Total long-term lease liabilities		1,995,387		2,036,034
Total		$	2,252,895	$	2,296,382

______________________________________________________________

(1) At March 31, 2019, these assets are comprised of approximately 98% real estate related assets (which include land, buildings and racking) and 2% non-real estate related assets (which include warehouse equipment, vehicles, furniture and fixtures and computer hardware and software).

(2) At March 31, 2019, these assets are comprised of approximately 66% real estate related assets and 34% non-real estate related assets.

The components of the lease expense for the three months ended March 31, 2019 is as follows:

Description	Location in Statement of Operations	Amount
Operating lease cost(1)	Cost of sales and Selling, general and administrative	$	111,906
Financing lease cost:
Depreciation of financing lease right-of-use assets	Depreciation and amortization	$	16,329
Interest expense for financing lease liabilities	Interest expense, net	6,142
Total financing lease cost		$	22,471

______________________________________________________________

(1) Of the $111,906 of operating lease cost incurred for the three months ended March 31, 2019, $108,601 is included within Cost of sales and $3,305 is included within Selling, general and administrative expenses. Operating lease cost includes variable lease costs of $25,489.

14

IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(2) Summary of Significant Accounting Policies (Continued)

We sublease certain real estate to third parties. The sublease income recognized for the three months ended March 31, 2019 is $3,047.

Weighted average remaining lease terms and discount rates as of March 31, 2019 are as follows:

Remaining Lease Term:
Operating leases	11.1 Years
Financing leases	11.0 Years
Discount Rate:
Operating leases	7.1%
Financing leases	5.7%

The estimated minimum future lease payments as of December 31, 2018, are as follows:

Year	Operating Leases(1)		Sublease Income			Capital Leases(1)(2)
2019	$	323,454	$	(7,525	)	$	80,513
2020	293,276		(7,200		)	71,335
2021	267,379		(7,063		)	61,269
2022	246,128		(6,694		)	52,832
2023	221,808		(6,409		)	44,722
Thereafter	1,287,807		(6,279		)	377,750
Total minimum lease payments	2,639,852		$	(41,170	)	688,421
Less amounts representing interest						(241,248		)
Present value of finance lease obligations						$	447,173

The estimated minimum future lease payments as of March 31, 2019, are as follows:

Year	Operating Leases(1)			Sublease Income			Financing Leases(1)
2019 (excluding the three months ended March 31, 2019)	$	251,699		$	(6,039	)	$	59,411
2020	308,267			(7,337		)	68,333
2021	280,931			(7,228		)	59,710
2022	257,598			(6,851		)	49,997
2023	234,035			(6,548		)	39,643
Thereafter	1,409,241			(6,922		)	287,609
Total minimum lease payments	2,741,771			$	(40,925	)	564,703
Less amounts representing interest or imputed interest	(878,826		)				(174,753		)
Present value of lease obligations	1,862,945						$	389,950

_______________________________________________________________________________

(1) Estimated minimum future lease payments exclude variable common area maintenance charges, insurance and taxes. Differences in estimated lease payments between December 31, 2018 and March 31, 2019 are primarily related to adjustments to account for certain build to suit leases that were accounted for as financing obligations under ASC 840 but are accounted for as operating leases under ASU 2016-02 and foreign currency exchange rate impacts.

(2) Includes capital lease and financing obligations associated with build to suit lease transactions at December 31, 2018.

15

IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(2) Summary of Significant Accounting Policies (Continued)

As of March 31, 2019, we do not have any material operating or financing leases that are signed but have not yet commenced and we have certain leases with related parties which are not material to our consolidated financial statements.

Other information: Supplemental cash flow information relating to our leases for the three months ended March 31, 2019 is as follows:

Cash paid for amounts included in measurement of lease liabilities:	Three Months Ended March 31, 2019
Operating cash flows used in operating leases	$	83,676
Financing cash flows used in financing leases	$	16,675
Non-cash items:
Operating lease modifications and reassessments	$	1,842
New operating leases (including acquisitions)	$	21,535
Financing lease modifications and reassessments	$	—
New financing leases	$	7,523

e.    Stock-Based Compensation

We record stock-based compensation expense, utilizing the straight-line method, for the cost of stock options, restricted stock units ("RSUs"), performance units ("PUs") and shares of stock issued under our employee stock purchase plan (together, "Employee Stock-Based Awards"). There have been no significant changes to our accounting policies, assumptions and valuation methodologies related to the accounting for our Employee Stock-Based Awards as disclosed in Note 2.n. to Notes to Consolidated Financial Statements included in our Annual Report.

For our Employee Stock-Based Awards made on or after February 20, 2019, we have included the following retirement provision: Upon an employee’s retirement on or after attaining age 58, if the sum of (i) the award recipient’s age at retirement and (ii) the award recipient’s years of service with the company totals at least 70, the award recipient is entitled to continued vesting of any outstanding Employee Stock-Based Awards which include the 2019 Retirement Criteria subsequent to their retirement, provided that, for awards granted in the year of retirement, their retirement occurs on or after July 1st (the “2019 Retirement Criteria”). Accordingly, (i) grants of Employee Stock-Based Awards to an employee who has met the 2019 Retirement Criteria on or before the date of grant, or will meet the Retirement Criteria before July 1^st of the year of the grant, will be expensed between the date of grant and July 1^st of the grant year and (ii) grants of Employee Stock-Based Awards to employees who will meet the 2019 Retirement Criteria during the award’s normal vesting period will be expensed between the date of grant and the date upon which the award recipient meets the 2019 Retirement Criteria. Stock options and RSUs granted to recipients who meet the 2019 Retirement Criteria will continue vesting on the original vesting schedule, and the stock options will remain exercisable up to three years after retirement, or the original expiration date of the stock options, if earlier. PUs granted to recipients who meet the 2019 Retirement Criteria will continue to vest and be delivered in accordance with the original vesting schedule of the applicable PU award and remain subject to the same performance conditions.

Stock-based compensation expense for Employee Stock-Based Awards for the three months ended March 31, 2019 and 2018 was $8,519 ($7,935 after tax or $0.03 per basic and diluted share) and $7,384 ($6,833 after tax or $0.02 per basic and diluted share), respectively, the substantial majority of which is included in Selling, general and administrative expenses in the accompanying Condensed Consolidated Statements of Operations. As of March 31, 2019, unrecognized compensation cost related to the unvested portion of our Employee Stock-Based Awards was $72,353 and is expected to be recognized over a weighted-average period of 2.2 years.

16

IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(2) Summary of Significant Accounting Policies (Continued)

Stock Options

A summary of stock option activity for the three months ended March 31, 2019 is as follows:

	Stock Options
Outstanding at December 31, 2018	4,271,834
Granted	920,706
Exercised	(99,334	)
Forfeited	(6,007	)
Expired	(9,629	)
Outstanding at March 31, 2019	5,077,570
Options exercisable at March 31, 2019	3,258,982
Options expected to vest	1,691,146

Restricted Stock Units

The fair value of RSUs vested during the three months ended March 31, 2019 and 2018 is as follows:

	Three Months Ended March 31,
	2019		2018
Fair value of RSUs vested	$	15,333	$	15,330

A summary of RSU activity for the three months ended March 31, 2019 is as follows:

	RSUs
Non-vested at December 31, 2018	1,196,566
Granted	621,281
Vested	(453,167	)
Forfeited	(18,075	)
Non-vested at March 31, 2019	1,346,605

Performance Units

The fair value of earned PUs that vested during the three months ended March 31, 2019 and 2018 is as follows:

	Three Months Ended March 31,
	2019		2018
Fair value of earned PUs that vested	$	6,503	$	3,033

17

IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(2) Summary of Significant Accounting Policies (Continued)

A summary of PU activity for the three months ended March 31, 2019 is as follows:

	Original PU Awards		PU Adjustment(1)		Total PU Awards
Non-vested at December 31, 2018	967,049		(299,948	)	667,101
Granted	380,856		—		380,856
Vested	(169,523	)	—		(169,523	)
Forfeited/Performance or Market Conditions Not Achieved	(4,816	)	(14,850	)	(19,666	)
Non-vested at March 31, 2019	1,173,566		(314,798	)	858,768

_______________________________________________________________________________

(1) Represents an increase or decrease in the number of original PUs awarded based on either the final performance criteria or market condition achievement at the end of the performance period of such PUs or a change in estimated awards based on the forecasted performance against the predefined targets.

As of March 31, 2019, we expected 100% achievement of the predefined revenue, return on invested capital and Adjusted EBITDA (as defined in Note 6) targets associated with the awards of PUs made in 2019, 2018 and 2017.

18

IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(2) Summary of Significant Accounting Policies (Continued)

f.    Income (Loss) Per Share—Basic and Diluted

Basic income (loss) per common share is calculated by dividing income (loss) by the weighted average number of common shares outstanding. The calculation of diluted income (loss) per share is consistent with that of basic income (loss) per share, but gives effect to all potential common shares (that is, securities such as stock options, RSUs or PUs) that were outstanding during the period, unless the effect is antidilutive.

The calculation of basic and diluted income (loss) per share for the three months ended March 31, 2019 and 2018 is as follows:

	Three Months Ended March 31,
	2019			2018
Income (loss) from continuing operations	$	30,476		$	45,614
Less: Net income (loss) attributable to noncontrolling interests	891			468
Income (loss) from continuing operations (utilized in numerator of Earnings Per Share calculation)	$	29,585		$	45,146
(Loss) income from discontinued operations, net of tax	$	(24	)	$	(462	)
Net income (loss) attributable to Iron Mountain Incorporated	$	29,561		$	44,684
Weighted-average shares—basic	286,528,000			285,259,000
Effect of dilutive potential stock options	231,402			249,564
Effect of dilutive potential RSUs and PUs	732,421			484,314
Weighted-average shares—diluted	287,491,823			285,992,878
Earnings (losses) per share—basic:
Income (loss) from continuing operations	$	0.10		$	0.16
(Loss) income from discontinued operations, net of tax	—			—
Net income (loss) attributable to Iron Mountain Incorporated(1)	$	0.10		$	0.16
Earnings (losses) per share—diluted:
Income (loss) from continuing operations	$	0.10		$	0.16
(Loss) income from discontinued operations, net of tax	—			—
Net income (loss) attributable to Iron Mountain Incorporated(1)	$	0.10		$	0.16
Antidilutive stock options, RSUs and PUs, excluded from the calculation	3,985,161			3,242,141

_______________________________________________________________________________

(1) Columns may not foot due to rounding.

19

IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(2) Summary of Significant Accounting Policies (Continued)

g.    Income Taxes

We provide for income taxes during interim periods based on our estimate of the effective tax rate for the year. Our estimate of the effective tax rates for the years ending December 31, 2019 and 2018 reflect the impact of the U.S. tax reform legislation, commonly referred to as the Tax Cuts and Jobs Act (the “Tax Reform Legislation”). See Note 7 to Notes to Consolidated Financial Statements included in our Annual Report for additional information regarding the impact the Tax Reform Legislation had on us. Discrete items and changes in our estimate of the annual effective tax rate are recorded in the period they occur. Our effective tax rate is subject to variability in the future due to, among other items: (1) changes in the mix of income between our qualified REIT subsidiaries ("QRSs") and our domestic taxable REIT subsidiaries ("TRSs"), as well as among the jurisdictions in which we operate; (2) tax law changes; (3) volatility in foreign exchange gains and losses; (4) the timing of the establishment and reversal of tax reserves; and (5) our ability to utilize net operating losses that we generate.

Our effective tax rates for the three months ended March 31, 2019 and 2018 is as follows:

	Three Months Ended March 31,
	2019(1)		2018(2)
Effective Tax Rate	25.7	%	2.5	%

_______________________________________________________________________________

(1) The primary reconciling items between the federal statutory tax rate of 21.0% and our overall effective tax rate for the three months ended March 31, 2019 were the benefit derived from the dividends paid deduction and the impact of differences in the tax rates at which our foreign earnings are subject, including foreign exchange gains and losses in different jurisdictions with different tax rates.  

(2) The primary reconciling items between the federal statutory tax rate of 21.0% and our overall effective tax rate for the three months ended March 31, 2018 were the benefit derived from the dividends paid deduction, a discrete tax benefit of approximately $14,000 associated with the resolution of a tax matter and the impact of differences in the tax rates at which our foreign earnings are subject, including foreign exchange gains and losses in different jurisdictions with different tax rates.

h.    Fair Value Measurements

Our financial assets or liabilities that are carried at fair value are required to be measured using inputs from the three levels of the fair value hierarchy. A financial asset or liability's classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement.

The three levels of the fair value hierarchy are as follows:

Level 1—Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that we have the ability to access at the measurement date.

Level 2—Inputs include quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (i.e., interest rates, yield curves, etc.), and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs).

Level 3—Unobservable inputs that reflect our assumptions about the assumptions that market participants would use in pricing the asset or liability.

20

IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(2) Summary of Significant Accounting Policies (Continued)

The assets and liabilities carried at fair value measured on a recurring basis as of March 31, 2019 and December 31, 2018, respectively, are as follows:

			Fair Value Measurements at March 31, 2019 Using
Description	Total Carrying Value at March 31, 2019		Quoted prices in active markets (Level 1)			Significant other observable inputs (Level 2)			Significant unobservable inputs (Level 3)
Money Market Funds(1)	$	1,739	$	—		$	1,739		$	—
Trading Securities	10,160		9,490		(2)	670		(3)	—
Derivative Assets (4)	23		—			23			—
Derivative Liabilities(4)	109		—			109			—
Interest Rate Swap Agreements Liabilities(5)	3,647		—			3,647			—

			Fair Value Measurements at December 31, 2018 Using
Description	Total Carrying Value at December 31, 2018		Quoted prices in active markets (Level 1)			Significant other observable inputs (Level 2)			Significant unobservable inputs (Level 3)
Time Deposits(1)	$	956	$	—		$	956		$	—
Trading Securities	10,753		10,248		(2)	505		(3)	—
Derivative Assets(4)	93		—			93			—
Interest Rate Swap Agreements Liabilities(5)	973		—			973			—

_______________________________________________________________________________

(1) Money market funds and time deposits are measured based on quoted prices for similar assets and/or subsequent transactions.

(2) Certain trading securities are measured at fair value using quoted market prices.

(3) Certain trading securities are measured based on inputs other than quoted market prices that are observable.

(4) Derivative assets and liabilities relate to short-term (six months or less) foreign currency contracts that we have entered into to hedge certain of our foreign exchange intercompany exposures. We calculate the value of such forward contracts by adjusting the spot rate utilized at the balance sheet date for translation purposes by an estimate of the forward points observed in active markets. As of March 31, 2019, we had outstanding forward contracts to (i) purchase 4,000 Euros and sell $4,610 United States dollars and (ii) purchase $4,515 United States dollars and sell 4,000 Euros. As of December 31, 2018, we had outstanding forward contracts to purchase 29,000 Euros and sell $33,374 United States dollars. We have not designated any of the forward contracts we have entered into as hedges.

(5) We have entered into interest rate swap agreements to limit our exposure to changes in interest rates on a portion of our floating rate indebtedness. As of March 31, 2019 and December 31, 2018, we have $350,000 in notional value of interest rate swap agreements outstanding, which expire in March 2022. Under the interest rate swap agreements, we receive variable rate interest payments associated with the notional amount of each interest rate swap, based upon one-month LIBOR, in exchange for the payment of fixed interest rate payments (at the fixed rate interest specified in the interest rate swap agreements). We have designated these interest rate swaps as cash flow hedges. Unrealized gains are recognized as assets while unrealized losses are recognized as liabilities. The fair value of the interest rate swaps are estimated using industry standard valuation models using market-based observable inputs, including interest rate curves.

21

IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(2) Summary of Significant Accounting Policies (Continued)

Disclosures are required in the financial statements for items measured at fair value on a non-recurring basis. There were no material items that are measured at fair value on a non-recurring basis at March 31, 2019 and December 31, 2018, other than those disclosed in Note 2.s. to Notes to Consolidated Financial Statements included in our Annual Report, those acquired in acquisitions that occurred during the three months ended March 31, 2019 and our investment in Makespace LLC (as disclosed in Note 9), all of which are based on Level 3 inputs.

The fair value of our long-term debt, which was determined based on either Level 1 inputs or Level 3 inputs, is disclosed in Note 4. Long-term debt is measured at cost in our Condensed Consolidated Balance Sheets as of March 31, 2019 and December 31, 2018.

i.    Accumulated Other Comprehensive Items, Net

The changes in accumulated other comprehensive items, net for the three months ended March 31, 2019 and 2018 are as follows:

	Three Months Ended March 31,
	2019									2018
	Foreign Currency Translation Adjustments			Fair Value Adjustments for Interest Rate Swap Agreements			Total			Foreign Currency Translation Adjustments			Fair Value Adjustments for Interest Rate Swap Agreements			Total
Beginning of Period	$	(264,691	)	$	(973	)	$	(265,664	)	$	(103,989	)	$	—		$	(103,989	)
Other comprehensive income (loss):
Foreign currency translation adjustments(1)	17,378			—			17,378			30,092			—			30,092
Fair value adjustments for interest rate swap agreements	—			(2,674		)	(2,674		)	—			(185		)	(185		)
Total other comprehensive income (loss)	17,378			(2,674		)	14,704			30,092			(185		)	29,907
End of Period	$	(247,313	)	$	(3,647	)	$	(250,960	)	$	(73,897	)	$	(185	)	$	(74,082	)

______________________________________________________________

(1) This amount includes foreign exchange (gains) losses of $(6,141) and $5,635 for the three months ended March 31, 2019 and 2018, respectively, related to the change in fair value of the portion of our Euro Notes (as defined and discussed more fully in Note 4) designated as a hedge of net investment of certain of our Euro denominated subsidiaries. For the three months ended March 31, 2019, we designated, on average, 271,146 Euros of our Euro Notes as a hedge of net investment of certain of our Euro denominated subsidiaries. For the three months ended March 31, 2018, we designated, on average, 164,244 Euros of our Euro Notes as a hedge of net investment of certain of our Euro denominated subsidiaries. As of March 31, 2019, cumulative net gains of $20,399 net of tax, are recorded in accumulated other comprehensive items, net associated with this net investment hedge.

22

IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(2) Summary of Significant Accounting Policies (Continued)

j.    Other Expense (Income), Net

Other expense (income), net for the three months ended March 31, 2019 and 2018 consists of the following:

	Three Months Ended March 31,
	2019			2018
Foreign currency transaction losses (gains), net	$	17,697		$	21,785
Other, net	(2,487		)	(1,634		)
	$	15,210		$	20,151

The gain or loss on foreign currency transactions, calculated as the difference between the historical exchange rate and the exchange rate at the applicable measurement date, include gains or losses related to (i) borrowings in certain foreign currencies under our Revolving Credit Facility (as defined and discussed more fully in Note 4), (ii) our Euro Notes, (iii) certain foreign currency denominated intercompany obligations of our foreign subsidiaries to us and between our foreign subsidiaries, which are not considered permanently invested, and (iv) amounts that are paid or received on the net settlement amount from forward contracts (as more fully discussed in Note 2.h.).

Other, net for the three months ended March 31, 2019 is primarily comprised of a gain on sale resulting from the Consumer Storage Transaction (as defined and discussed more fully in Note 9) of approximately $4,200. Other, net for the three months ended March 31, 2019 also includes the change in estimated fair value of the noncontrolling interests associated with our business in India, which are accounted for as mandatorily redeemable noncontrolling interests.

k.    New Accounting Pronouncements

In August 2018, the FASB issued ASU No. 2018-15, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract (a consensus of the FASB Emerging Issues Task Force) ("ASU 2018-15"). ASU 2018-15 aligns the accounting for costs incurred to implement a cloud computing arrangement that is a service arrangement with the guidance on capitalizing costs associated with developing or obtaining internal-use software. We adopted ASU 2018-15 on January 1, 2019. ASU 2018-15 did not have a material impact on our consolidated financial statements.

In February 2016, the FASB issued ASU 2016-02. We adopted ASU 2016-02 on January 1, 2019 on a modified retrospective basis. See Note 2.d. for information regarding the impact of the adoption of ASU 2016-02 on our consolidated financial statements.

l. Change in Presentation

Subsequent to our conversion to a REIT, we have historically classified gains on sale of real estate, net of tax, as a separate line on our consolidated statements of operations and excluded such amounts from our reported operating income. We presented such amounts net of tax as these gains were presented below the provision (benefit) for income taxes on our consolidated statements of operations. Commencing with the first quarter of 2019, we will present gains on sale of real estate as a component of operating income in the line item loss (gain) on disposal/write down of property, plant and equipment, net. Such amounts will be presented gross of tax with any tax impact presented within provision (benefit) for income taxes. All prior periods will be conformed to this presentation going forward. No gains on the sale of real estate were recognized during the three months ended March 31, 2019 or 2018.

23

IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(3) Acquisitions

We account for acquisitions using the acquisition method of accounting, and, accordingly, the assets and liabilities acquired are recorded at their estimated fair values and the results of operations for each acquisition have been included in our consolidated results from their respective acquisition dates.

Acquisitions Completed During the Three Months Ended March 31, 2019

In order to enhance our existing operations in the United States, the United Kingdom and Switzerland and to expand our operations into Bulgaria, we completed the acquisition of four storage and records management companies and one art storage company for total cash consideration of approximately $31,900.

Purchase Price Allocation

A summary of the cumulative consideration paid and the preliminary allocation of the purchase price paid for all of our 2019 acquisitions through March 31, 2019 is as follows:

	Three Months Ended March 31, 2019
Cash Paid (gross of cash acquired)(1)	$	34,198
Purchase Price Holdbacks and Other	1,042
Total Consideration	35,240
Fair Value of Identifiable Assets Acquired:
Cash	2,273
Accounts Receivable, Prepaid Expenses and Other Assets	2,845
Property, Plant and Equipment(2)	4,039
Customer Relationship Intangible Assets	13,589
Operating Lease Right-of-Use Assets	10,541
Accounts Payable, Accrued Expenses and Other Liabilities	(2,065		)
Operating Lease Liabilities	(10,541		)
Deferred Income Taxes	(1,574		)
Total Fair Value of Identifiable Net Assets Acquired	19,107
Goodwill Initially Recorded(3)	$	16,133

_______________________________________________________________________________

(1) Included in cash paid for acquisitions in the Condensed Consolidated Statement of Cash Flows for the three months ended March 31, 2019 is net cash acquired of $2,273 and contingent and other payments, net of $7,498 related to acquisitions made in previous years.

(2) Consists primarily of leasehold improvements, racking structures and warehouse equipment. These assets are depreciated using the straight-line method with the useful lives as noted in Note 2.f. to Notes to Consolidated Financial Statements included in our Annual Report.

(3) The goodwill associated with acquisitions is primarily attributable to the assembled workforce, expanded market opportunities and costs and other operating synergies anticipated upon the integration of the operations of us and the acquired businesses.

24

IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(3) Acquisitions (Continued)

See Note 6 to Notes to Consolidated Financial Statements included in our Annual Report for additional information regarding our allocations of the purchase price for acquisitions. The preliminary purchase price allocations that are not finalized as of March 31, 2019 primarily relate to the final assessment of the fair values of intangible assets and liabilities (primarily customer relationship intangible assets and data center lease-based intangible assets), property, plant and equipment (primarily building, building improvements, data center infrastructure and racking structures), right-of-use assets and liabilities associated with acquired operating leases, contingencies and income taxes (primarily deferred income taxes), primarily associated with the EvoSwitch Transaction (as defined in Note 6 to Notes to Consolidated Financial Statements included in our Annual Report), as well as other acquisitions we closed in 2019.

As the valuation of certain assets and liabilities for purposes of purchase price allocations are preliminary in nature, they are subject to adjustment as additional information is obtained about the facts and circumstances regarding these assets and liabilities that existed at the acquisition date. Any adjustments to our estimates of purchase price allocation will be made in the periods in which the adjustments are determined and the cumulative effect of such adjustments will be calculated as if the adjustments had been completed as of the acquisition dates. Adjustments recorded during the three months ended March 31, 2019 were not material to our results from operations.

Acquisition of IO Data Centers in 2018

On January 10, 2018, we completed the IODC Transaction. At the closing of the IODC Transaction, we paid approximately $1,347,000. In February 2019, we paid approximately $31,000 in additional purchase price associated with the execution of customer contracts from the closing through the one-year anniversary of the IODC Transaction, which was accrued at December 31, 2018. This amount, net of amortization, is reported as a third-party commissions asset as a component of Other within Other assets, net, in our Condensed Consolidated Balance Sheets at March 31, 2019 and December 31, 2018.

The unaudited consolidated pro forma financial information (the "Pro Forma Financial Information") below summarizes the combined results of us and IODC on a pro forma basis as if the IODC Transaction had occurred on January 1, 2017. The Pro Forma Financial Information is presented for informational purposes and is not necessarily indicative of the results of operations that would have been achieved if the acquisition had taken place on January 1, 2017. The Pro Forma Financial Information, for the period presented, includes purchase accounting adjustments (including amortization expenses from acquired intangible assets and depreciation of acquired property, plant and equipment). We and IODC collectively incurred $28,064 of operating expenditures to complete the IODC Transaction (including advisory and professional fees). These operating expenditures have been reflected within the results of operations in the Pro Forma Financial Information as if they were incurred on January 1, 2017.

	Three Months Ended March 31, 2018
Total Revenues	$	1,045,948
Income from Continuing Operations	$	55,566
Per Share Income from Continuing Operations - Basic	$	0.20
Per Share Income from Continuing Operations - Diluted	$	0.19

In addition to our acquisition of IODC, we completed certain other acquisitions during the first three months of 2019 and in fiscal year 2018. The Pro Forma Financial Information does not reflect these acquisitions due to the insignificant impact of these acquisitions on our consolidated results of operations.

25

IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(4) Debt

Long-term debt is as follows:

	March 31, 2019											December 31, 2018
	Debt (inclusive of discount)			Unamortized Deferred Financing Costs			Carrying Amount			Fair Value		Debt (inclusive of discount)				Unamortized Deferred Financing Costs			Carrying Amount			Fair Value
Revolving Credit Facility(1)	$	1,139,566		$	(13,332	)	$	1,126,234		$	1,139,566	$	793,832			$	(14,117	)	$	779,715		$	793,832
Term Loan A(1)	237,500			—			237,500			237,500		240,625				—			240,625			240,625
Term Loan B(2)	691,476			(8,430		)	683,046			670,478		693,169				(8,742		)	684,427			660,013
Australian Dollar Term Loan (the "AUD Term Loan")(3)	234,000			(2,893		)	231,107			235,587		233,955				(3,084		)	230,871			235,645
UK Bilateral Revolving Credit Facility ("UK Bilateral Facility")(4)	182,450			(2,255		)	180,195			182,450		178,299				(2,357		)	175,942			178,299
43/8% Senior Notes due 2021 (the "43/8% Notes")(5)	500,000			(3,725		)	496,275			502,500		500,000				(4,155		)	495,845			488,750
6% Senior Notes due 2023 (the "6% Notes due 2023")(5)	600,000			(4,851		)	595,149			615,000		600,000				(5,126		)	594,874			606,000
53/8% CAD Senior Notes due 2023 (the "CAD Notes")	187,262			(2,424		)	184,838			189,444		183,403				(2,506		)	180,897			186,154
53/4% Senior Subordinated Notes due 2024 (the "53/4% Notes")(5)	1,000,000			(7,439		)	992,561			1,010,000		1,000,000				(7,782		)	992,218			940,000
3% Euro Senior Notes due 2025 (the "Euro Notes")(5)	336,557			(3,941		)	332,616			337,684		343,347				(4,098		)	339,249			321,029
37/8% GBP Senior Notes due 2025 (the "GBP Notes")	521,286			(6,480		)	514,806			495,852		509,425				(6,573		)	502,852			453,811
53/8% Senior Notes due 2026 (the "53/8% Notes")	250,000			(3,078		)	246,922			246,875		250,000				(3,185		)	246,815			224,375
47/8% Senior Notes due 2027 (the "47/8% Notes")(5)	1,000,000			(12,086		)	987,914			957,500		1,000,000				(12,442		)	987,558			855,000
51/4% Senior Notes due 2028 (the "51/4% Notes")(5)	825,000			(10,628		)	814,372			798,188		825,000				(10,923		)	814,077			713,625
Real Estate Mortgages, Financing Lease Liabilities and Other	566,677			(431		)	566,246			566,677		606,702				(171		)	606,531			606,702
Accounts Receivable Securitization Program(6)	252,373			(184		)	252,189			252,373		221,673				(218		)	221,455			221,673
Mortgage Securitization Program(7)	50,000			(1,091		)	48,909			50,000		50,000				(1,128		)	48,872			50,000
Total Long-term Debt	8,574,147			(83,268		)	8,490,879					8,229,430			—	(86,607		)	8,142,823
Less Current Portion	(125,142		)	—			(125,142		)			(126,406		)		—			(126,406		)
Long-term Debt, Net of Current Portion	$	8,449,005		$	(83,268	)	$	8,365,737				$	8,103,024			$	(86,607	)	$	8,016,417

______________________________________________________________

26

IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(4) Debt (Continued)

(1) Collectively, the credit agreement ("Credit Agreement"). The Credit Agreement consists of a revolving credit facility (the "Revolving Credit Facility") and a term loan (the "Term Loan A"). The Credit Agreement is scheduled to mature on June 3, 2023. Of the $1,139,566 of outstanding borrowings under the Revolving Credit Facility as of March 31, 2019, 965,800 was denominated in United States dollars, 94,200 was denominated in Canadian dollars and 92,000 was denominated in Euros. In addition, we also had various outstanding letters of credit totaling $37,271. The remaining amount available for borrowing under the Revolving Credit Facility as of March 31, 2019 was $573,163 (which amount represents the maximum availability as of such date). The average interest rate in effect under the Credit Agreement was 4.0% as of March 31, 2019. The average interest rate in effect under the Revolving Credit Facility as of March 31, 2019 was 4.0% and the interest rate in effect under Term Loan A as of March 31, 2019 was 4.2%.

(2) In connection with the 2018 First Amendment (as defined in Note 5 to Notes to Consolidated Financial Statements included in our Annual Report), Iron Mountain Information Management, LLC ("IMIM") entered into an incremental term loan activation notice (the "Activation Notice") with certain lenders pursuant to which the lenders party to the Activation Notice agreed to provide commitments to fund an incremental term loan B in the amount of $700,000 (the "Term Loan B"). On March 26, 2018, IMIM borrowed the full amount of the Term Loan B. The Term Loan B is scheduled to mature on January 2, 2026. The interest rate in effect as of March 31, 2019 was 4.3%. The amount of debt for the Term Loan B reflects an unamortized original issue discount of $1,524 and $1,581 as of March 31, 2019 and December 31, 2018, respectively.

(3) The interest rate in effect as of March 31, 2019 was 5.7%. We had 331,875 Australian dollars outstanding on the AUD Term Loan as of March 31, 2019. The amount of debt for the AUD Term Loan reflects an unamortized original issue discount of $1,587 and $1,690 as of March 31, 2019 and December 31, 2018, respectively.

(4) The interest rate in effect as of March 31, 2019 was 3.2%.

(5) Collectively, the "Parent Notes".

(6) The interest rate in effect as of March 31, 2019 was 3.5%.

(7) The interest rate in effect as of March 31, 2019 was 3.5%.

See Note 4 to Notes to Consolidated Financial Statements included in our Annual Report for additional information regarding our Credit Agreement and our other long-term debt, including the direct obligors of each of our debt instruments as well as information regarding the fair value of our debt instruments (including the levels of the fair value hierarchy used to determine the fair value of our debt instruments). The levels of the fair value hierarchy used to determine the fair value of our debt as of March 31, 2019 are consistent with the levels of the fair value hierarchy used to determine the fair value of our debt as of December 31, 2018 (which are disclosed in our Annual Report). Additionally, see Note 5 to Notes to Consolidated Financial Statements included in our Annual Report for information regarding which of our consolidated subsidiaries guarantee certain of our debt instruments. There have been no material changes to our long-term debt since December 31, 2018.

Cash Pooling

As described in greater detail in Note 4 to Notes to Consolidated Financial Statements included in our Annual Report, certain of our subsidiaries participate in cash pooling arrangements (the “Cash Pools”) in order to help manage global liquidity requirements. We currently utilize two separate cash pools, one of which we utilize to manage global liquidity requirements for our QRSs (the "QRS Cash Pool") and the other for our TRSs (the "TRS Cash Pool").

27

IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(4) Debt (Continued)

The approximate amount of the net cash position for our QRS Cash Pool and the TRS Cash Pool and the approximate amount of the gross position and outstanding debit balances for each of these pools as of March 31, 2019 and December 31, 2018 are as follows:

	March 31, 2019							December 31, 2018
	Gross Cash Position		Outstanding Debit Balances			Net Cash Position		Gross Cash Position		Outstanding Debit Balances			Net Cash Position
QRS Cash Pool	$	271,400	$	(269,400	)	$	2,000	$	300,800	$	(298,800	)	$	2,000
TRS Cash Pool	281,100		(277,900		)	3,200		$	281,500	(279,300		)	2,200

The net cash position balances as of March 31, 2019 and December 31, 2018 are reflected as cash and cash equivalents in the Condensed Consolidated Balance Sheets.

Debt Covenants

The Credit Agreement, our indentures and other agreements governing our indebtedness contain certain restrictive financial and operating covenants, including covenants that restrict our ability to complete acquisitions, pay cash dividends, incur indebtedness, make investments, sell assets and take certain other corporate actions. The covenants do not contain a rating trigger. Therefore, a change in our debt rating would not trigger a default under the Credit Agreement, our indentures or other agreements governing our indebtedness. The Credit Agreement uses EBITDAR-based calculations as the primary measures of financial performance, including leverage and fixed charge coverage ratios.

Our leverage and fixed charge coverage ratios under the Credit Agreement as of March 31, 2019 and December 31, 2018, as well as our leverage ratio under our indentures as of March 31, 2019 and December 31, 2018 are as follows:

	March 31, 2019	December 31, 2018	Maximum/Minimum Allowable
Net total lease adjusted leverage ratio	5.8	5.6	Maximum allowable of 6.5
Net secured debt lease adjusted leverage ratio	2.8	2.6	Maximum allowable of 4.0
Bond leverage ratio (not lease adjusted)	6.1	5.8	Maximum allowable of 6.5-7.0(1)
Fixed charge coverage ratio	2.2	2.2	Minimum allowable of 1.5

______________________________________________________________

(1) The maximum allowable leverage ratio under our indentures for the 4⁷/₈% Notes, the GBP Notes and the 5¹/₄% Notes is 7.0, while the maximum allowable leverage ratio under the indentures pertaining to our remaining senior and senior subordinated notes is 6.5. In certain instances as provided in our indentures, we have the ability to incur additional indebtedness that would result in our bond leverage ratio exceeding the maximum allowable ratio under our indentures and still remain in compliance with the covenant.

Noncompliance with these leverage and fixed charge coverage ratios would have a material adverse effect on our financial condition and liquidity.

28

IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(5) Selected Consolidated Financial Statements of Parent, Guarantors and Non-Guarantors

The following data summarizes the consolidating results of IMI on the equity method of accounting as of March 31, 2019 and December 31, 2018 and for the three months ended March 31, 2019 and 2018 and are prepared on the same basis as the consolidated financial statements.

The Parent Notes, the CAD Notes, the GBP Notes, and the 5³/₈% Notes are guaranteed by the subsidiaries referred to below as the Guarantors. These subsidiaries are 100% owned by IMI. The guarantees are full and unconditional, as well as joint and several.

Additionally, IMI guarantees the CAD Notes, which were issued by Iron Mountain Canada Operations ULC ("Canada Company"), the GBP Notes, which were issued by Iron Mountain (UK) PLC ("IM UK"), and the 5³/₈% Notes, which were issued by Iron Mountain US Holdings, Inc., which is one of the Guarantors. Canada Company and IM UK do not guarantee the Parent Notes. The subsidiaries that do not guarantee the Parent Notes, the CAD Notes, the GBP Notes, and the 5³/₈% Notes are referred to below as the Non-Guarantors.

In the normal course of business, we periodically change the ownership structure of our subsidiaries to meet the requirements of our business. In the event of such changes, we recast the prior period financial information within this footnote to conform to the current period presentation in the period such changes occur. Generally, these changes do not alter the designation of the underlying subsidiaries as Guarantors or Non-Guarantors. However, they may change whether the underlying subsidiary is owned by the Parent, a Guarantor or a Non-Guarantor. If such a change occurs, the amount of investment in subsidiaries in the below Condensed Consolidated Balance Sheets and equity in the earnings (losses) of subsidiaries, net of tax in the below Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) with respect to the relevant Parent, Guarantors, Non-Guarantors and Eliminations columns also would change.

29

IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(5) Selected Consolidated Financial Statements of Parent, Guarantors and Non-Guarantors (Continued)

CONDENSED CONSOLIDATED BALANCE SHEETS

	March 31, 2019
	Parent		Guarantors		Non- Guarantors		Eliminations			Consolidated
Assets
Current Assets:
Cash and cash equivalents(1)	$	11	$	122,114	$	109,991	$	(70,641	)	$	161,475
Accounts receivable	—		37,598		799,923		—			837,521
Intercompany receivable	—		1,032,582		—		(1,032,582		)	—
Prepaid expenses and other	—		110,223		100,660		(29		)	210,854
Total Current Assets	11		1,302,517		1,010,574		(1,103,252		)	1,209,850
Property, Plant and Equipment, Net	168		2,999,744		1,525,671		—			4,525,583
Other Assets, Net:
Long-term notes receivable from affiliates and intercompany receivable	5,009,984		—		—		(5,009,984		)	—
Investment in subsidiaries	1,926,435		1,017,247		—		(2,943,682		)	—
Goodwill	—		2,857,855		1,607,523		—			4,465,378
Operating lease right-of-use assets	—		895,920		895,616		—			1,791,536
Other	5		976,403		720,608		—			1,697,016
Total Other Assets, Net	6,936,424		5,747,425		3,223,747		(7,953,666		)	7,953,930
Total Assets	$	6,936,603	$	10,049,686	$	5,759,992	$	(9,056,918	)	$	13,689,363
Liabilities and Equity
Intercompany Payable	$	729,843	$	—	$	302,739	$	(1,032,582	)	$	—
Debit Balances Under Cash Pools	—		—		70,641		(70,641		)	—
Current Portion of Long-Term Debt	—		55,940		69,231		(29		)	125,142
Total Other Current Liabilities (includes current portion of operating lease liabilities)	224,825		632,699		532,467		—			1,389,991
Long-Term Debt, Net of Current Portion	4,218,887		2,212,686		1,934,164		—			8,365,737
Long-Term Operating Lease Liabilities, Net of Current Portion	—		832,007		824,652		—			1,656,659
Long-Term Notes Payable to Affiliates and Intercompany Payable	—		5,009,984		—		(5,009,984		)	—
Other Long-term Liabilities	3,647		51,575		262,776		—			317,998
Commitments and Contingencies (See Note 7)
Redeemable Noncontrolling Interests	—		—		73,102		—			73,102
Total Iron Mountain Incorporated Stockholders' Equity	1,759,401		1,254,795		1,688,887		(2,943,682		)	1,759,401
Noncontrolling Interests	—		—		1,333		—			1,333
Total Equity	1,759,401		1,254,795		1,690,220		(2,943,682		)	1,760,734
Total Liabilities and Equity	$	6,936,603	$	10,049,686	$	5,759,992	$	(9,056,918	)	$	13,689,363

______________________________________________________________

(1) Included within Cash and Cash Equivalents at March 31, 2019 is approximately $76,000 and $0 of cash on deposit associated with our Cash Pools for the Guarantors and Non-Guarantors, respectively.

30

IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(5) Selected Consolidated Financial Statements of Parent, Guarantors and Non-Guarantors (Continued)

CONDENSED CONSOLIDATED BALANCE SHEETS (Continued)

	December 31, 2018
	Parent		Guarantors		Non- Guarantors		Eliminations			Consolidated
Assets
Current Assets:
Cash and cash equivalents(1)	$	132	$	61,650	$	169,318	$	(65,615	)	$	165,485
Accounts receivable	—		47,900		798,989		—			846,889
Intercompany receivable	—		818,463		—		(818,463		)	—
Prepaid expenses and other	93		108,879		86,797		(29		)	195,740
Total Current Assets	225		1,036,892		1,055,104		(884,107		)	1,208,114
Property, Plant and Equipment, Net	190		3,002,104		1,487,263		—			4,489,557
Other Assets, Net:
Long-term notes receivable from affiliates and intercompany receivable	4,954,686		—		—		(4,954,686		)	—
Investment in subsidiaries	1,885,174		1,006,144		—		(2,891,318		)	—
Goodwill	—		2,858,539		1,582,491		—			4,441,030
Other	—		979,483		734,063		—			1,713,546
Total Other Assets, Net	6,839,860		4,844,166		2,316,554		(7,846,004		)	6,154,576
Total Assets	$	6,840,275	$	8,883,162	$	4,858,921	$	(8,730,111	)	$	11,852,247
Liabilities and Equity
Intercompany Payable	$	462,927	$	—	$	355,536	$	(818,463	)	$	—
Debit Balances Under Cash Pools	—		10,612		55,003		(65,615		)	—
Current Portion of Long-Term Debt	—		63,703		62,732		(29		)	126,406
Total Other Current Liabilities	268,373		616,826		451,073		—			1,336,272
Long-Term Debt, Net of Current Portion	4,223,822		1,877,649		1,914,946		—			8,016,417
Long-Term Notes Payable to Affiliates and Intercompany Payable	—		4,954,686		—		(4,954,686		)	—
Other Long-term Liabilities	973		115,994		300,064		—			417,031
Commitments and Contingencies (See Note 7)
Redeemable Noncontrolling Interests	—		—		70,532		—			70,532
Total Iron Mountain Incorporated Stockholders' Equity	1,884,180		1,243,692		1,647,626		(2,891,318		)	1,884,180
Noncontrolling Interests	—		—		1,409		—			1,409
Total Equity	1,884,180		1,243,692		1,649,035		(2,891,318		)	1,885,589
Total Liabilities and Equity	$	6,840,275	$	8,883,162	$	4,858,921	$	(8,730,111	)	$	11,852,247

______________________________________________________________

(1) Included within Cash and Cash Equivalents at December 31, 2018 is approximately $57,200 and $12,700 of cash on deposit associated with our Cash Pools for the Guarantors and Non-Guarantors, respectively.

31

IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(5) Selected Consolidated Financial Statements of Parent, Guarantors and Non-Guarantors (Continued)

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS)

	Three Months Ended March 31, 2019
	Parent			Guarantors			Non- Guarantors		Eliminations			Consolidated
Revenues:
Storage rental	$	—		$	403,741		$	259,233	$	—		$	662,974
Service	—			239,693			151,196		—			390,889
Intercompany revenues	—			1,154			4,923		(6,077		)	—
Total Revenues	—			644,588			415,352		(6,077		)	1,053,863
Operating Expenses:
Cost of sales (excluding depreciation and amortization)	—			263,137			198,407		—			461,544
Intercompany	—			4,923			1,154		(6,077		)	—
Selling, general and administrative	87			187,822			82,650		—			270,559
Depreciation and amortization	23			102,954			59,506		—			162,483
(Gain) Loss on disposal/write-down of property, plant and equipment, net	—			574			28		—			602
Total Operating Expenses	110			559,410			341,745		(6,077		)	895,188
Operating (Loss) Income	(110		)	85,178			73,607		—			158,675
Interest Expense (Income), Net(1)	49,625			4,057			48,754		—			102,436
Other Expense (Income), Net	182			527			14,501		—			15,210
(Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes	(49,917		)	80,594			10,352		—			41,029
Provision (Benefit) for Income Taxes	—			1,301			9,252		—			10,553
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax	(79,478		)	4,158			—		75,320			—
Income (Loss) from Continuing Operations	29,561			75,135			1,100		(75,320		)	30,476
(Loss) Income from Discontinued Operations, Net of Tax	—			(24		)	—		—			(24		)
Net Income (Loss)	29,561			75,111			1,100		(75,320		)	30,452
Less: Net Income (Loss) Attributable to Noncontrolling Interests	—			—			891		—			891
Net Income (Loss) Attributable to Iron Mountain Incorporated	$	29,561		$	75,111		$	209	$	(75,320	)	$	29,561
Net Income (Loss)	$	29,561		$	75,111		$	1,100	$	(75,320	)	$	30,452
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustments	6,141			—			12,050		—			18,191
Change in fair value of interest rate swap agreements	(2,674		)	—			—		—			(2,674		)
Equity in Other Comprehensive (Loss) Income of Subsidiaries	11,237			7,156			—		(18,393		)	—
Total Other Comprehensive Income (Loss)	14,704			7,156			12,050		(18,393		)	15,517
Comprehensive Income (Loss)	44,265			82,267			13,150		(93,713		)	45,969
Comprehensive (Loss) Income Attributable to Noncontrolling Interests	—			—			1,704		—			1,704
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	$	44,265		$	82,267		$	11,446	$	(93,713	)	$	44,265

_____________________________________________________________

(1) Included within Interest Expense (Income), Net are intercompany management fees and royalty fees, which are eliminated in our consolidated financial statements.

32

IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(5) Selected Consolidated Financial Statements of Parent, Guarantors and Non-Guarantors (Continued)

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Continued)

	Three Months Ended March 31, 2018
	Parent			Guarantors			Non- Guarantors			Eliminations			Consolidated
Revenues:
Storage rental	$	—		$	396,476		$	254,673		$	—		$	651,149
Service	—			230,230			161,079			—			391,309
Intercompany revenues	—			1,205			4,491			(5,696		)	—
Total Revenues	—			627,911			420,243			(5,696		)	1,042,458
Operating Expenses:
Cost of sales (excluding depreciation and amortization)	—			246,163			202,558			—			448,721
Intercompany cost of sales	—			4,491			1,205			(5,696		)	—
Selling, general and administrative	43			185,348			84,339			—			269,730
Depreciation and amortization	33			102,446			58,099			—			160,578
(Gain) Loss on disposal/write-down of property, plant and equipment, net	—			(356		)	(774		)	—			(1,130		)
Total Operating Expenses	76			538,092			345,427			(5,696		)	877,899
Operating (Loss) Income	(76		)	89,819			74,816			—			164,559
Interest Expense (Income), Net(1)	49,941			(1,508		)	49,193			—			97,626
Other (Income) Expense, Net	(1,157		)	1,560			19,748			—			20,151
(Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes	(48,860		)	89,767			5,875			—			46,782
(Benefit) Provision for Income Taxes	—			(6,712		)	7,880			—			1,168
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax	(93,544		)	2,865			—			90,679			—
Income (Loss) from Continuing Operations	44,684			93,614			(2,005		)	(90,679		)	45,614
(Loss) Income from Discontinued Operations	—			(422		)	(40		)	—			(462		)
Net Income (Loss)	44,684			93,192			(2,045		)	(90,679		)	45,152
Less: Net Income (Loss) Attributable to Noncontrolling Interests	—			—			468			—			468
Net Income (Loss) Attributable to Iron Mountain Incorporated	$	44,684		$	93,192		$	(2,513	)	$	(90,679	)	$	44,684
Net Income (Loss)	$	44,684		$	93,192		$	(2,045	)	$	(90,679	)	$	45,152
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustments	(5,635		)	—			37,286			—			31,651
Change in fair value of interest rate swap agreements	(185		)	—			—			—			(185		)
Equity in Other Comprehensive Income (Loss) of Subsidiaries	35,732			38,336			—			(74,068		)	—
Total Other Comprehensive Income (Loss)	29,912			38,336			37,286			(74,068		)	31,466
Comprehensive Income (Loss)	74,596			131,528			35,241			(164,747		)	76,618
Comprehensive Income (Loss) Attributable to Noncontrolling Interests	—			—			2,027			—			2,027
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	$	74,596		$	131,528		$	33,214		$	(164,747	)	$	74,591

_____________________________________________________________

(1) Included within Interest Expense (Income), Net are intercompany management fees and royalty fees, which are eliminated in our consolidated financial statements.

33

IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(5) Selected Consolidated Financial Statements of Parent, Guarantors and Non-Guarantors (Continued)

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

	Three Months Ended March 31, 2019
	Parent			Guarantors			Non- Guarantors			Eliminations			Consolidated
Cash Flows from Operating Activities:
Cash Flows from Operating Activities—Continuing Operations	$	(68,310	)	$	116,235		$	69,142		$	—		$	117,067
Cash Flows from Operating Activities—Discontinued Operations	—			—			—			—			—
Cash Flows from Operating Activities	(68,310		)	116,235			$	69,142		$	—		$	117,067
Cash Flows from Investing Activities:
Capital expenditures	—			(84,766		)	(99,999		)	—			(184,765		)
Cash paid for acquisitions, net of cash acquired	—			(9,508		)	(29,915		)	—			(39,423		)
Intercompany loans to subsidiaries	252,175			22,859			—			(275,034		)	—
Acquisitions of customer relationships, customer inducements and data center lease-based intangibles	—			(49,301		)	(18,611		)	—			(67,912		)
Investments in joint ventures (see Note 9)	—			(19,222		)	—			—			(19,222		)
Proceeds from sales of property and equipment and other, net	—			36			69			—			105
Cash Flows from Investing Activities—Continuing Operations	252,175			(139,902		)	(148,456		)	(275,034		)	(311,217		)
Cash Flows from Investing Activities—Discontinued Operations	—			—			—			—			—
Cash Flows from Investing Activities	252,175			(139,902		)	(148,456		)	(275,034		)	(311,217		)
Cash Flows from Financing Activities:
Repayment of revolving credit facility, term loan facilities and other debt	—			(410,563		)	(940,679		)	—			(1,351,242		)
Proceeds from revolving credit facility, term loan facilities and other debt	—			734,243			989,219			—			1,723,462
Debit (payments) balances under cash pools	—			(10,612		)	15,638			(5,026		)	—
Debt (repayment to) financing from and equity (distribution to) contribution from noncontrolling interests, net	—			—			(498		)	—			(498		)
Intercompany loans from parent	—			(228,937		)	(46,097		)	275,034			—
Parent cash dividends	(178,023		)	—			—			—			(178,023		)
Net (payments) proceeds associated with employee stock-based awards	(5,963		)	—			—			—			(5,963		)
Cash Flows from Financing Activities—Continuing Operations	(183,986		)	84,131			17,583			270,008			187,736
Cash Flows from Financing Activities—Discontinued Operations	—			—			—			—			—
Cash Flows from Financing Activities	(183,986		)	84,131			17,583			270,008			187,736
Effect of exchange rates on cash and cash equivalents	—			—			2,404			—			2,404
(Decrease) Increase in cash and cash equivalents	(121		)	60,464			(59,327		)	(5,026		)	(4,010		)
Cash and cash equivalents, including Restricted Cash, beginning of period	132			61,650			169,318			(65,615		)	165,485
Cash and cash equivalents, including Restricted Cash, end of period	$	11		$	122,114		$	109,991		$	(70,641	)	$	161,475

34

IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(5) Selected Consolidated Financial Statements of Parent, Guarantors and Non-Guarantors (Continued)

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS(Continued)

	Three Months Ended March 31, 2018
	Parent			Guarantors			Non- Guarantors			Eliminations			Consolidated
Cash Flows from Operating Activities:
Cash Flows from Operating Activities—Continuing Operations	$	(66,516	)	$	96,674		$	61,410		$	—		$	91,568
Cash Flows from Operating Activities—Discontinued Operations	—			—			—			—			—
Cash Flows from Operating Activities	(66,516		)	96,674			61,410			—			91,568
Cash Flows from Investing Activities:
Capital expenditures	—			(62,148		)	(33,457		)	—			(95,605		)
Cash paid for acquisitions, net of cash acquired	—			(1,315,549		)	(113,425		)	—			(1,428,974		)
Intercompany loans to subsidiaries	157,737			208,443			—			(366,180		)	—
Acquisitions of customer relationships, customer inducements and data center lease-based intangibles	—			(11,874		)	(6,172		)	—			(18,046		)
Proceeds from sales of property and equipment and other, net	—			(19,466		)	79			—			(19,387		)
Cash Flows from Investing Activities—Continuing Operations	157,737			(1,200,594		)	(152,975		)	(366,180		)	(1,562,012		)
Cash Flows from Investing Activities—Discontinued Operations	—			—			—			—			—
Cash Flows from Investing Activities	157,737			(1,200,594		)	(152,975		)	(366,180		)	(1,562,012		)
Cash Flows from Financing Activities:
Repayment of revolving credit facility, term loan facilities and other debt	—			(2,308,119		)	(2,102,537		)	—			(4,410,656		)
Proceeds from revolving credit facility, term loan facilities and other debt	—			3,067,988			2,428,503			—			5,496,491
Debit (payments) balances under cash pools	—			(51,946		)	(11,733		)	63,679			—
Debt (repayment to) financing from and equity (distribution to) contribution from noncontrolling interests, net	—			—			(561		)	—			(561		)
Intercompany loans from parent	—			(154,184		)	(211,996		)	366,180			—
Parent cash dividends	(169,006		)	—			—			—			(169,006		)
Net (payments) proceeds associated with employee stock-based awards	(5,950		)	—			—			—			(5,950		)
Net proceeds associated with the Over-Allotment Option exercise	76,192			—			—			—			76,192
Net proceeds associated with the At the Market (ATM) Program	8,716			—			—			—			8,716
Payment of debt financing and stock issuance costs	(412		)	(9,075		)	(487		)	—			(9,974		)
Cash Flows from Financing Activities—Continuing Operations	(90,460		)	544,664			101,189			429,859			985,252
Cash Flows from Financing Activities—Discontinued Operations	—			—			—			—			—
Cash Flows from Financing Activities	(90,460		)	544,664			101,189			429,859			985,252
Effect of exchange rates on cash and cash equivalents	—			—			1,984			—			1,984
Increase (Decrease) in cash and cash equivalents	761			(559,256		)	11,608			63,679			(483,208		)
Cash and cash equivalents, including Restricted Cash, beginning of period	2,433			634,317			383,675			(94,726		)	925,699
Cash and cash equivalents, including Restricted Cash, end of period	$	3,194		$	75,061		$	395,283		$	(31,047	)	$	442,491

35

IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(6) Segment Information

Our six reportable operating segments as of December 31, 2018 are described in Note 9 to Notes to Consolidated Financial Statements included in our Annual Report and are as follows:

• North American Records and Information Management Business

• North American Data Management Business

• Western European Business

• Other International Business

• Global Data Center Business

• Corporate and Other Business

There have been no changes made to our reportable operating segments since December 31, 2018, other than the impact of the Consumer Storage Transaction (as defined in Note 9). Prior to the Consumer Storage Transaction, our consumer storage business was a component of our Corporate and Other Business Segment. The previously reported segment information has been restated to conform to the current presentation and reflects the changes to our reportable operating segments that occurred in fourth quarter of 2018 as described in Note 9 to Notes to Consolidated Financial Statements included in our Annual Report. The operations associated with acquisitions completed during the first three months of 2019 have been incorporated into our existing reportable operating segments.

36

IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(6) Segment Information (Continued)

An analysis of our business segment information and reconciliation to the accompanying Condensed Consolidated Financial Statements is as follows:

	North American Records and Information Management Business		North American Data Management Business		Western European Business		Other International Business		Global Data Center Business		Corporate and Other Business			Total Consolidated
As of and for the Three Months Ended March 31, 2019
Total Revenues	$	527,380	$	96,747	$	128,753	$	200,956	$	61,536	$	38,491		$	1,053,863
Storage Rental	306,986		66,572		80,695		129,473		59,718		19,530			662,974
Service	220,394		30,175		48,058		71,483		1,818		18,961			390,889
Depreciation and Amortization	60,002		10,202		15,257		30,599		31,632		14,791			162,483
Depreciation	45,752		8,013		10,947		18,218		19,013		12,668			114,611
Amortization	14,250		2,189		4,310		12,381		12,619		2,123			47,872
Adjusted EBITDA	223,683		50,552		39,209		58,124		26,011		(73,073		)	324,506
Total Assets(1)	5,823,817		902,514		1,414,878		2,686,938		2,310,001		551,215			13,689,363
Expenditures for Segment Assets	56,265		5,632		30,101		31,254		153,705		15,143			292,100
Capital Expenditures (see Liquidity and Capital Resources section of Management's Discussion & Analysis of Financial Condition and Results of Operations)	28,688		5,632		2,116		15,149		121,557		11,623			184,765
Cash Paid (Received) for Acquisitions, Net of Cash Acquired	9,876		—		11,484		14,543		—		3,520			39,423
Acquisitions of Customer Relationships, Customer Inducements and Contract Fulfillment Costs and third-party commissions.	17,701		—		16,501		1,562		32,148		—			67,912
As of and for the Three Months Ended March 31, 2018
Total Revenues	$	526,843	$	99,964	$	134,075	$	210,767	$	46,603	$	24,206		$	1,042,458
Storage Rental	304,819		69,246		83,952		131,747		45,495		15,890			651,149
Service	222,024		30,718		50,123		79,020		1,108		8,316			391,309
Depreciation and Amortization	62,752		10,104		17,556		31,873		22,268		16,025			160,578
Depreciation	49,138		8,023		12,758		19,064		11,380		13,069			113,432
Amortization	13,614		2,081		4,798		12,809		10,888		2,956			47,146
Adjusted EBITDA	225,738		53,852		43,966		60,747		20,790		(62,078		)	343,015
Total Assets(1)	5,030,238		833,690		917,155		2,441,685		1,875,766		899,615			11,998,149
Expenditures for Segment Assets	43,181		6,853		7,480		32,160		1,438,012		14,939			1,542,625
Capital Expenditures (see Liquidity and Capital Resources section of Management's Discussion & Analysis of Financial Condition and Results of Operations)	29,870		6,853		6,047		25,142		13,111		14,582			95,605
Cash Paid (Received) for Acquisitions, Net of Cash Acquired	1,551		—		—		3,208		1,424,215		—			1,428,974
Acquisitions of Customer Relationships, Customer Inducements and Contract Fulfillment Costs	11,760		—		1,433		3,810		686		357			18,046

______________________________________________________________

(1) Excludes all intercompany receivables or payables and investment in subsidiary balances. Total assets as of March 31, 2019 reflects the adoption of ASU 2016-02.

37

IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(6) Segment Information (Continued)

The accounting policies of the reportable operating segments are the same as those described in Note 2 and in Note 2 to Notes to Consolidated Financial Statements included in our Annual Report. Adjusted EBITDA for each segment is defined as income (loss) from continuing operations before interest expense, net, provision (benefit) for income taxes, depreciation and amortization, and also excludes certain items that we believe are not indicative of our core operating results, specifically: (i) (gain) loss on disposal/write-down of property, plant and equipment, net (including real estate); (ii) intangible impairments; (iii) other expense (income), net (which includes foreign currency transaction (gains) losses, net); and (iv) Significant Acquisition Costs (as defined below). Internally, we use Adjusted EBITDA as the basis for evaluating the performance of, and allocating resources to, our operating segments.

A reconciliation of Adjusted EBITDA to income (loss) from continuing operations on a consolidated basis is as follows:

	Three Months Ended March 31,
	2019		2018
Adjusted EBITDA	$	324,506	$	343,015
(Add)/Deduct:
Provision (Benefit) for Income Taxes	10,553		1,168
Other Expense (Income), Net	15,210		20,151
Interest Expense, Net	102,436		97,626
Loss (gain) on disposal/write-down of property, plant and equipment, net	602		(1,130		)
Depreciation and Amortization	162,483		160,578
Significant Acquisition Costs(1)	2,746		19,008
Income (Loss) from Continuing Operations	$	30,476	$	45,614

_______________________________________________________________________________

(1) As defined in Note 9 to Notes to Consolidated Financial Statements included in our Annual Report.

38

IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(6) Segment Information (Continued)

Information as to our revenues by product and service lines by segment are as follows:

	North American Records and Information Management Business		North American Data Management Business		Western European Business		Other International Business		Global Data Center Business		Corporate and Other Business		Total Consolidated
For the Three Months Ended March 31, 2019
Records Management(1)	$	427,367	$	—	$	108,707	$	172,977	$	—	$	24,345	$	733,396
Data Management(1)	—		93,989		19,886		19,227		—		14,146		147,248
Information Destruction(1)(2)	100,013		2,758		160		8,752		—		—		111,683
Data Center	—		—		—		—		61,536		—		61,536
Total Revenues	$	527,380	$	96,747	$	128,753	$	200,956	$	61,536	$	38,491	$	1,053,863
For the Three Months Ended March 31, 2018
Records Management(1)	$	435,002	$	—	$	113,759	$	181,330	$	—	$	10,404	$	740,495
Data Management(1)	—		97,594		20,219		20,478		—		13,802		152,093
Information Destruction(1)(2)	91,841		2,370		97		8,959		—		—		103,267
Data Center	—		—		—		—		46,603		—		46,603
Total Revenues	$	526,843	$	99,964	$	134,075	$	210,767	$	46,603	$	24,206	$	1,042,458

_______________________________________________________________________________

(1) Each of the offerings within our product and service lines has a component of revenue that is storage rental related and a component that is service revenues, except for information destruction, which does not have a storage rental component.

(2) Includes secure shredding services.

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IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(7) Commitments and Contingencies

We are involved in litigation from time to time in the ordinary course of business. A portion of the defense and/or settlement costs associated with such litigation is covered by various commercial liability insurance policies purchased by us and, in limited cases, indemnification from third parties. Our policy is to establish reserves for loss contingencies when the losses are both probable and reasonably able to be estimated. We record legal costs associated with loss contingencies as expenses in the period in which they are incurred. There have been no material updates or changes to the matters disclosed in Note 10 to Notes to Consolidated Financial Statements included in our Annual Report, nor have there been any new material loss contingencies since December 31, 2018. We believe that the resolution of the matters disclosed in Note 10 to Notes to Consolidated Financial Statements included in our Annual Report will not have a material impact on our consolidated financial condition, results of operations or cash flows. We have estimated a reasonably possible range for all loss contingencies, including those disclosed in Note 10 to Notes to Consolidated Financial Statements included in our Annual Report, and believe it is reasonably possible that we could incur aggregate losses in addition to amounts currently accrued for all matters up to an additional $17,500 over the next several years, of which certain amounts would be covered by insurance or indemnity arrangements.

(8) Stockholders' Equity Matters

Our board of directors has adopted a dividend policy under which we have paid, and in the future intend to pay, quarterly cash dividends on our common stock. The amount and timing of future dividends will continue to be subject to the approval of our board of directors, in its sole discretion, and to applicable legal requirements.

In fiscal year 2018 and the first three months of 2019, our board of directors declared the following dividends:

Declaration Date	Dividend Per Share		Record Date	Total Amount		Payment Date
February 14, 2018	$	0.5875	March 15, 2018	$	167,969	April 2, 2018
May 24, 2018	0.5875		June 15, 2018	168,078		July 2, 2018
July 24, 2018	0.5875		September 17, 2018	168,148		October 2, 2018
October 25, 2018	0.6110		December 17, 2018	174,935		January 3, 2019
February 7, 2019	0.6110		March 15, 2019	175,242		April 2, 2019

At The Market (ATM) Equity Program

As described in greater detail in Note 12 to Notes to Consolidated Financial Statements included in our Annual Report, we entered into a distribution agreement with a syndicate of 10 banks (the “Agents”) pursuant to which we may sell, from time to time, up to an aggregate sales price of $500,000 of our common stock through the Agents (the “At The Market (ATM) Equity Program”). There were no shares of common stock sold under the At The Market (ATM) Equity Program during the three months ended March 31, 2019. As of March 31, 2019, the remaining aggregate sale price of shares of our common stock available for distribution under the At The Market (ATM) Equity Program was approximately $431,200.

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IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(9) Divestments

On March 19, 2019, we contributed our customer contracts and certain intellectual property and other assets used by us to operate our consumer storage business in the United States and Canada (the "IM Consumer Storage Assets") and approximately $20,000 in cash (gross of certain transaction expenses) (the "Cash Contribution") to a joint venture entity, Makespace LLC (the "Makespace JV"), established by us and Makespace Labs, Inc. ("Makespace"), a consumer storage services provider (the "Consumer Storage Transaction"). At the closing date of the Consumer Storage Transaction, the Makespace JV owned (i) the IM Consumer Storage Assets, (ii) the Cash Contribution and (iii) the customer contracts, intellectual property and certain other assets used by Makespace to operate its consumer storage business in the United States. As part of the Consumer Storage Transaction, we received an equity interest of approximately 34% in the Makespace JV (the "Makespace Investment"). In connection with the Consumer Storage Transaction and the Makespace Investment, we also entered into a storage and service agreement with the Makespace JV to provide certain storage and related services to the Makespace JV (see Note 11).

We have concluded that the divestment of the IM Consumer Storage Assets in the Consumer Storage Transaction does not meet the criteria to be reported as a discontinued operation in our consolidated financial statements, as our decision to divest this business does not represent a strategic shift that will have a major effect on our operations and financial results. Accordingly, the revenues and expenses associated with this business are presented as a component of income (loss) from continuing operations in our Condensed Consolidated Statements of Operations for the three months ended March 31, 2019 and 2018, respectively, and the cash flows associated with this business are presented as a component of cash flows from continuing operations in our Condensed Consolidated Statements of Cash Flows for the three months ended March 31, 2019 and 2018, respectively, through the closing date of the Consumer Storage Transaction.

As a result of the Consumer Storage Transaction, we recorded a gain on sale of approximately $4,200 to Other expense (income), net, in the first quarter of 2019, representing the excess of the fair value of the consideration received over the sum of (i) the carrying value of our consumer storage operations and (ii) the Cash Contribution. At the closing date of the Consumer Storage Transaction, the fair value of the Makespace Investment was approximately $27,500 and is presented as a component of Other within Other assets, net in our Condensed Consolidated Balance Sheet as of March 31, 2019. We account for the Makespace Investment as an equity method investment.

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`Table of Contents

IRON MOUNTAIN INCORPORATED

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(10) Significant Acquisition Costs

Significant Acquisition Costs included in the accompanying Condensed Consolidated Statements of Operations are as follows:

	Three Months Ended March 31,
	2019		2018
Cost of sales (excluding depreciation and amortization)	$	898	$	296
Selling, general and administrative expenses	1,848		18,712
Total Significant Acquisition Costs	$	2,746	$	19,008

Significant Acquisition Costs included in the accompanying Condensed Consolidated Statements of Operations by segment are as follows:

	Three Months Ended March 31,
	2019		2018
North American Records and Information Management Business	$	378	$	584
North American Data Management Business	—		—
Western European Business	—		2,152
Other International Business	502		537
Global Data Center Business	143		10,181
Corporate and Other Business	1,723		5,554
Total Significant Acquisition Costs	$	2,746	$	19,008

(11) Related Party Transactions

In connection with the Consumer Storage Transaction and the Makespace Investment (both as described more fully in Note 9), we also entered into a storage and service agreement with the Makespace JV to provide certain storage and related services to the Makespace JV (the "Makespace Agreement"). Revenues and expenses associated with the Makespace Agreement are presented as a component of our North American Records and Information Management Business segment. For the three months ended March 31, 2019, we recognized an immaterial amount of revenue associated with the Makespace Agreement.

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IRON MOUNTAIN INCORPORATED

Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations

The following discussion and analysis of our financial condition and results of operations for the three months ended March 31, 2019 should be read in conjunction with our Condensed Consolidated Financial Statements and Notes thereto for the three months ended March 31, 2019, included herein, and our Consolidated Financial Statements and Notes thereto for the year ended December 31, 2018, included in our Annual Report on Form 10-K filed with the United States Securities and Exchange Commission ("SEC") on February 14, 2019 (our "Annual Report").

FORWARD-LOOKING STATEMENTS

We have made statements in this Quarterly Report on Form 10-Q ("Quarterly Report") that constitute "forward-looking statements" as that term is defined in the Private Securities Litigation Reform Act of 1995 and other securities laws. These forward-looking statements concern our operations, economic performance, financial condition, goals, beliefs, future growth strategies, investment objectives, plans and current expectations, such as our (1) commitment to future dividend payments, (2) expected growth of records stored with us from existing customers, (3) expected 2019 consolidated organic storage rental revenue growth rate, consolidated organic total revenue growth rate and capital expenditures, (4) expectation that profits will increase in our emerging markets, (5) expectation that our growth portfolio will become a large part of our business over time, (6) statements made in relation (i) to our acquisition of Recall Holdings Limited ("Recall") pursuant to the Scheme Implementation Deed, as amended, with Recall (the "Recall Transaction") and (ii) our acquisition of IO Data Centers, LLC ("IODC"), including the total acquisition expenditures related to Recall and IODC and the cost to integrate Recall into our existing operations, (7) statements regarding our expectation to reduce our leverage ratio and (8) our ability to close pending acquisitions. These forward-looking statements are subject to various known and unknown risks, uncertainties and other factors. When we use words such as "believes," "expects," "anticipates," "estimates" or similar expressions, we are making forward-looking statements. Although we believe that our forward-looking statements are based on reasonable assumptions, our expected results may not be achieved, and actual results may differ materially from our expectations. In addition, important factors that could cause actual results to differ from expectations include, among others:

• our ability to remain qualified for taxation as a real estate investment trust for United States federal income tax purposes ("REIT");

• the adoption of alternative technologies and shifts by our customers to storage of data through non-paper based technologies;

• changes in customer preferences and demand for our storage and information management services;

• the cost to comply with current and future laws, regulations and customer demands relating to data security and privacy issues, as well as fire and safety standards;

• the impact of litigation or disputes that may arise in connection with incidents in which we fail to protect our customers' information or our internal records or information technology ("IT") systems and the impact of such incidents on our reputation and ability to compete;

• changes in the price for our storage and information management services relative to the cost of providing such storage and information management services;

• changes in the political and economic environments in the countries in which our international subsidiaries operate and changes in the global political climate;

• our ability or inability to manage growth, expand internationally, complete acquisitions on satisfactory terms, to close pending acquisitions and to integrate acquired companies efficiently;

• changes in the amount of our growth and maintenance capital expenditures and our ability to invest according to plan;

• our ability to comply with our existing debt obligations and restrictions in our debt instruments or to obtain additional financing to meet our working capital needs;

• the impact of service interruptions or equipment damage and the cost of power on our data center operations;

• changes in the cost of our debt;

• the impact of alternative, more attractive investments on dividends;

• the cost or potential liabilities associated with real estate necessary for our business;

• the performance of business partners upon whom we depend for technical assistance or management expertise outside the United States; and

• other trends in competitive or economic conditions affecting our financial condition or results of operations not presently contemplated.

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You should not rely upon forward-looking statements except as statements of our present intentions and of our present expectations, which may or may not occur. You should read these cautionary statements as being applicable to all forward-looking statements wherever they appear. Except as required by law, we undertake no obligation to release publicly the result of any revision to these forward-looking statements that may be made to reflect events or circumstances after the date hereof or to reflect the occurrence of unanticipated events. Readers are also urged to carefully review and consider the various disclosures we have made in this Quarterly Report, as well as our other periodic reports filed with the SEC including under "Risk Factors" in our Annual Report.

Overview

The following discussions set forth, for the periods indicated, management's discussion and analysis of financial condition and results of operations. Significant trends and changes are discussed for the three month period ended March 31, 2019 within each section.

IODC Acquisition

On January 10, 2018, we completed the acquisition of the United States operations of IODC (the "IODC Transaction"). At the closing of the IODC Transaction, we paid approximately $1,347.0 million. In February 2019, we paid approximately $31.0 million in additional purchase price associated with the execution of customer contracts from the closing through the one-year anniversary of the IODC Transaction. See Note 6 to Notes to Consolidated Financial Statements included in our Annual Report for additional information.

Divestments

a. Consumer Storage Transaction

On March 19, 2019, we contributed our customer contracts and certain intellectual property and other assets used by us to operate our consumer storage business in the United States and Canada (the "IM Consumer Storage Assets") and approximately$20.0 million in cash (gross of certain transaction expenses) (the "Cash Contribution") to a joint venture entity, Makespace LLC (the "Makespace JV"), established by us and Makespace Labs, Inc. ("Makespace"), a consumer storage services provider (the "Consumer Storage Transaction"). At the closing date of the Consumer Storage Transaction, the Makespace JV owned (i) the IM Consumer Storage Assets, (ii) the Cash Contribution and (iii) the customer contracts, intellectual property and certain other assets used by Makespace to operate its consumer storage business in the United States. As part of the Consumer Storage Transaction, we received an equity interest of approximately 34% in the Makespace JV (the "Makespace Investment").

As described in Note 9 to Notes to Condensed Consolidated Financial Statements included in this Quarterly Report, the divestment of the IM Consumer Storage Assets in the Consumer Storage Transaction does not meet the criteria to be reported as a discontinued operations in our consolidated financial statements. In connection with the Consumer Storage Transaction and the Makespace Investment, we also entered into a storage and service agreement with the Makespace JV to provide certain storage and related services to the Makespace JV (the "Makespace Agreement"). Revenues and expenses associated with the Makespace Agreement are presented as a component of our North American Records and Information Management Business segment. For the three months ended March 31, 2019, we recognized an immaterial amount of revenue associated with the Makespace Agreement.

As a result of the Consumer Storage Transaction, we recorded a gain on sale of approximately $4.2 million to Other expense (income), net, in the first quarter of 2019, representing the excess of the fair value of the consideration received over the sum of (i) carrying value of our consumer storage operations and (ii) the Cash Contribution.

b. IMFS Divestment

On September 28, 2018, Iron Mountain Fulfillment Services, Inc., a consolidated subsidiary of Iron Mountain Incorporated ("IMI") that operated our fulfillment services business in the United States, sold substantially all of its assets for total consideration of approximately $3.0 million (the "IMFS Divestment"). As described in Note 13 to Notes to Consolidated Financial Statements in our Annual Report, we have concluded that the IMFS Divestment does not meet the criteria to be reported as discontinued operations in our consolidated financial statements, as our decision to divest this business does not represent a strategic shift that will have a major effect on our operations and financial results. Our fulfillment services business represented approximately $7.4 million and $1.2 million of total revenues and income from continuing operations, respectively, for the three months ended March 31, 2018.

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Significant Acquisition Costs

We currently estimate total acquisition and integration expenditures associated with the Recall Transaction and acquisition expenditures associated with the IODC Transaction to be approximately $405.0 million, the substantial majority of which was incurred prior to the end of 2018. From January 1, 2015 through March 31, 2019, we have incurred cumulative operating and capital expenditures associated with the Recall Transaction and the IODC Transaction of $392.0 million, including $317.3 million of Significant Acquisition Costs (as defined in Note 9 to Notes to Consolidated Financial Statements included in our Annual Report) and $74.7 million of capital expenditures. We expect the remaining amount of these operating and capital expenditures will be primarily related to moving costs associated with facility consolidation and system upgrade costs.

General

Our revenues consist of storage rental revenues as well as service revenues and are reflected net of sales and value added taxes. Storage rental revenues, which are considered a key driver of financial performance for the storage and information management services industry, consist primarily of recurring periodic rental charges related to the storage of materials or data (generally on a per unit basis) that are typically retained by customers for many years, technology escrow services that protect and manage source code, data backup and storage on our proprietary cloud and revenues associated with our data center operations. Service revenues include charges for related service activities, the most significant of which include: (1) the handling of records, including the addition of new records, temporary removal of records from storage, refiling of removed records and courier operations, consisting primarily of the pickup and delivery of records upon customer request; (2) destruction services, consisting primarily of secure shredding of sensitive documents and the related sale of recycled paper, the price of which can fluctuate from period to period, and customer termination and permanent removal fees; (3) other services, including the scanning, imaging and document conversion services of active and inactive records and project revenues; (4) consulting services; and (5) cloud-related data protection, preservation, restoration and recovery. Our service revenue growth has been negatively impacted by declining activity rates as stored records are becoming less active. While customers continue to store their records and tapes with us, they are less likely than they have been in the past to retrieve records for research and other purposes, thereby reducing service activity levels.

Cost of sales (excluding depreciation and amortization) consists primarily of wages and benefits for field personnel, facility occupancy costs (including rent and utilities), transportation expenses (including vehicle leases and fuel), other product cost of sales and other equipment costs and supplies. Of these, wages and benefits and facility occupancy costs are the most significant. Selling, general and administrative expenses consist primarily of wages and benefits for management, administrative, information technology, sales, account management and marketing personnel, as well as expenses related to communications and data processing, travel, professional fees, bad debts, training, office equipment and supplies.

The expansion of our international businesses has impacted the major cost of sales components and selling, general and administrative expenses. Our international operations are more labor intensive relative to revenue than our operations in North America and, therefore, labor costs are a higher percentage of international segment revenue. In addition, the overhead structure of our expanding international operations has generally not achieved the same level of overhead leverage as our North American segments, which may result in an increase in selling, general and administrative expenses as a percentage of consolidated revenue as our international operations become a larger percentage of our consolidated results.

Our consolidated revenues and expenses are subject to the net effect of foreign currency translation related to our operations outside the United States. It is difficult to predict the future fluctuations of foreign currency exchange rates and how those fluctuations will impact our Consolidated Statements of Operations. As a result of the relative size of our international operations, these fluctuations may be material on individual balances. Our revenues and expenses from our international operations are generally denominated in the local currency of the country in which they are derived or incurred. Therefore, the impact of currency fluctuations on our operating income and operating margin is partially mitigated. In order to provide a framework for assessing how our underlying businesses performed excluding the effect of foreign currency fluctuations, we compare the percentage change in the results from one period to another period in this report using constant currency presentation. The constant currency growth rates are calculated by translating the 2018 results at the 2019 average exchange rates. Constant currency growth rates are a non-GAAP measure.

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The following table is a comparison of underlying average exchange rates of the foreign currencies that had the most significant impact on our United States dollar-reported revenues and expenses:

	Percentage of United States Dollar-Reported Revenue for the Three Months Ended March 31,				Average Exchange Rates for the Three Months Ended March 31,				Percentage Strengthening / (Weakening) of Foreign Currency
	2019		2018		2019		2018
Australian dollar	3.4	%	3.9	%	$	0.712	$	0.786	(9.4	)%
Brazilian real	2.7	%	3.1	%	$	0.265	$	0.308	(14.0	)%
British pound sterling	6.6	%	6.8	%	$	1.302	$	1.391	(6.4	)%
Canadian dollar	5.8	%	6.1	%	$	0.752	$	0.791	(4.9	)%
Euro	7.5	%	7.0	%	$	1.136	$	1.229	(7.6	)%

The percentage of United States dollar-reported revenues for all other foreign currencies was 12.7% and 12.9% for the three months ended March 31, 2019 and 2018, respectively.

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Non-GAAP Measures

Adjusted EBITDA

Adjusted EBITDA is defined as income (loss) from continuing operations before interest expense, net, provision (benefit) for income taxes, depreciation and amortization, and also excludes certain items that we believe are not indicative of our core operating results, specifically: (1) (gain) loss on disposal/write-down of property, plant and equipment (including real estate), net; (2) intangible impairments; (3) other expense (income), net (which includes foreign currency transaction (gains) losses, net); and (4) Significant Acquisition Costs. Adjusted EBITDA Margin is calculated by dividing Adjusted EBITDA by total revenues. We use multiples of current or projected Adjusted EBITDA in conjunction with our discounted cash flow models to determine our estimated overall enterprise valuation and to evaluate acquisition targets. We believe Adjusted EBITDA and Adjusted EBITDA Margin provide our current and potential investors with relevant and useful information regarding our ability to generate cash flow to support business investment. These measures are an integral part of the internal reporting system we use to assess and evaluate the operating performance of our business.

Adjusted EBITDA excludes both interest expense, net and the provision (benefit) for income taxes. These expenses are associated with our capitalization and tax structures, which we do not consider when evaluating the operating profitability of our core operations. Finally, Adjusted EBITDA does not include depreciation and amortization expenses, in order to eliminate the impact of capital investments, which we evaluate by comparing capital expenditures to incremental revenue generated and as a percentage of total revenues. Adjusted EBITDA and Adjusted EBITDA Margin should be considered in addition to, but not as a substitute for, other measures of financial performance reported in accordance with accounting principles generally accepted in the United States of America ("GAAP"), such as operating income, income (loss) from continuing operations, net income (loss) or cash flows from operating activities from continuing operations (as determined in accordance with GAAP).

Reconciliation of Income (Loss) from Continuing Operations to Adjusted EBITDA (in thousands):

	Three Months Ended March 31,
	2019		2018
Income (Loss) from Continuing Operations	$	30,476	$	45,614
Add/(Deduct):
Provision (Benefit) for Income Taxes	10,553		1,168
Other Expense (Income), Net	15,210		20,151
Interest Expense, Net	102,436		97,626
Loss (Gain) on Disposal/Write-Down of Property, Plant and Equipment, Net	602		(1,130		)
Depreciation and Amortization	162,483		160,578
Significant Acquisition Costs	2,746		19,008
Adjusted EBITDA	$	324,506	$	343,015

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Adjusted EPS

Adjusted EPS is defined as reported earnings per share fully diluted from continuing operations excluding: (1) (gain) loss on disposal/write-down of property, plant and equipment (including real estate), net; (2) intangible impairments; (3) other expense (income), net (which includes foreign currency transaction (gains) losses, net); (4) Significant Acquisition Costs; and (5) the tax impact of reconciling items and discrete tax items. Adjusted EPS includes income (loss) attributable to noncontrolling interests. We do not believe these excluded items to be indicative of our ongoing operating results, and they are not considered when we are forecasting our future results. We believe Adjusted EPS is of value to our current and potential investors when comparing our results from past, present and future periods.

Reconciliation of Reported EPS—Fully Diluted from Continuing Operations to Adjusted EPS—Fully Diluted from Continuing Operations:

	Three Months Ended March 31,
	2019		2018
Reported EPS—Fully Diluted from Continuing Operations	$	0.10	$	0.16
Add/(Deduct):
Income (Loss) Attributable to Noncontrolling Interests	—		—
Other Expense (Income), Net	0.05		0.07
Loss (Gain) on Disposal/Write-Down of Property, Plant and Equipment, Net	—		—
Significant Acquisition Costs	0.01		0.07
Tax Impact of Reconciling Items and Discrete Tax Items(1)	—		(0.05		)
Adjusted EPS—Fully Diluted from Continuing Operations(2)	$	0.17	$	0.24

_______________________________________________________________________________

(1) The difference between our effective tax rates and our structural tax rate (or adjusted effective tax rates) for the three months ended March 31, 2019 and 2018, respectively, is primarily due to (i) the reconciling items above, which impact our reported income (loss) from continuing operations before provision (benefit) for income taxes but have an insignificant impact on our reported provision (benefit) for income taxes and (ii) other discrete tax items. Our structural tax rate for purposes of the calculation of Adjusted EPS for the three months ended March 31, 2019 and 2018 was 18.9% and 19.5%, respectively.

(2) Columns may not foot due to rounding.

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FFO (Nareit) and FFO (Normalized)

Funds from operations (“FFO”) is defined by the National Association of Real Estate Investment Trusts ("Nareit") and us as net income (loss) excluding depreciation on real estate assets, gains on sale of real estate, net of tax and amortization of data center leased-based intangibles ("FFO (Nareit)"). FFO (Nareit) does not give effect to real estate depreciation because these amounts are computed, under GAAP, to allocate the cost of a property over its useful life. Because values for well-maintained real estate assets have historically increased or decreased based upon prevailing market conditions, we believe that FFO (Nareit) provides investors with a clearer view of our operating performance. Our most directly comparable GAAP measure to FFO (Nareit) is net income (loss). Although Nareit has published a definition of FFO, modifications to FFO (Nareit) are common among REITs as companies seek to provide financial measures that most meaningfully reflect their particular business. Our definition of FFO (Normalized) excludes certain items included in FFO (Nareit) that we believe are not indicative of our core operating results, specifically: (1) (gain) loss on disposal/write-down of property, plant and equipment (excluding real estate), net; (2) intangible impairments; (3) other expense (income), net (which includes foreign currency transaction (gains) losses, net); (4) real estate financing lease depreciation; (5) Significant Acquisition Costs; (6) the tax impact of reconciling items and discrete tax items; (7) loss (income) from discontinued operations, net of tax; and (8) loss (gain) on sale of discontinued operations, net of tax.

Reconciliation of Net Income (Loss) to FFO (Nareit) and FFO (Normalized) (in thousands):

	Three Months Ended March 31,
	2019			2018
Net Income (Loss)	$	30,452		$	45,152
Add/(Deduct):
Real Estate Depreciation(1)	73,079			69,533
Gains on Sale of Real Estate, Net of Tax	—			—
Data Center Lease-Based Intangible Assets Amortization(2)	12,609			10,838
FFO (Nareit)	116,140			125,523
Add/(Deduct):
Loss (Gain) on Disposal/Write-Down of Property, Plant and Equipment (Excluding Real Estate), Net	602			(1,130		)
Other Expense (Income), Net(3)	15,210			20,151
Real Estate Financing Lease Depreciation	3,504			3,446
Significant Acquisition Costs	2,746			19,008
Tax Impact of Reconciling Items and Discrete Tax Items(4)	(709		)	(15,379		)
Loss (Income) from Discontinued Operations, Net of Tax(5)	24			462
FFO (Normalized)	$	137,517		$	152,081

_______________________________________________________________________________

(1) Includes depreciation expense related to owned real estate assets (land improvements, buildings, building improvements, leasehold improvements and racking), excluding depreciation related to real estate financing leases.

(2) Includes amortization expense for data center in-place lease intangible assets and data center tenant relationship intangible assets as discussed in Note 2.b. to Notes to Condensed Consolidated Financial Statements included in this Quarterly Report.

(3) Includes foreign currency transaction losses, net of $17.7 million and $21.8 million in the three months ended March 31, 2019 and 2018, respectively. See Note 2.j. to Notes to Condensed Consolidated Financial Statements included in this Quarterly Report for additional information regarding the components of Other (income) expense, net.

(4) Represents the tax impact of (i) the reconciling items above, which impact our reported income (loss) from continuing operations before provision (benefit) for income taxes but have an insignificant impact on our reported provision (benefit) for income taxes and (ii) other discrete tax items. Discrete tax items resulted in a (benefit) provision for income taxes of $(0.6) million and $(13.4) million for the three months ended March 31, 2019 and 2018, respectively.

(5) Net of a de minimis tax benefit for the three months ended March 31, 2019 and 2018.

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Critical Accounting Policies

Our discussion and analysis of our financial condition and results of operations are based upon our Condensed Consolidated Financial Statements, which have been prepared in accordance with GAAP. The preparation of these financial statements requires us to make estimates, judgments and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities at the date of the financial statements and for the period then ended. On an ongoing basis, we evaluate the estimates used. We base our estimates on historical experience, actuarial estimates, current conditions and various other assumptions that we believe to be reasonable under the circumstances. These estimates form the basis for making judgments about the carrying values of assets and liabilities and are not readily apparent from other sources. Actual results may differ from these estimates. Our critical accounting policies include the following, which are listed in no particular order:

• Revenue Recognition

• Accounting for Acquisitions

• Impairment of Tangible and Intangible Assets

• Income Taxes

Further detail regarding our critical accounting policies can be found in "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" in our Annual Report, and the Consolidated Financial Statements and the Notes included therein. We have determined that no material changes concerning our critical accounting policies have occurred since December 31, 2018, other than the adoption of Accounting Standards Update No. 2016-02, Leases (Topic 842), as amended ("ASU 2016-02"), as described in Note 2.d. to Notes to Condensed Consolidated Financial Statements included in this Quarterly Report.

Recent Accounting Pronouncements

See Note 2.k. to Notes to Condensed Consolidated Financial Statements included in this Quarterly Report for a description of recently issued accounting pronouncements, including those recently adopted.

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Results of Operations

Comparison of three months ended March 31, 2019 to three months ended March 31, 2018 (in thousands):

	Three Months Ended March 31,
							Dollar Change			Percentage Change
	2019			2018
Revenues	$	1,053,863		$	1,042,458		$	11,405		1.1	%
Operating Expenses	895,188			877,899			17,289			2.0	%
Operating Income	158,675			164,559			(5,884		)	(3.6	)%
Other Expenses, Net	128,199			118,945			9,254			7.8	%
Income from Continuing Operations	30,476			45,614			(15,138		)	(33.2	)%
(Loss) Income from Discontinued Operations, Net of Tax	(24		)	(462		)	438			(94.8	)%
Net Income	30,452			45,152			(14,700		)	(32.6	)%
Net Income (Loss) Attributable to Noncontrolling Interests	891			468			423			90.4	%
Net Income Attributable to Iron Mountain Incorporated	$	29,561		$	44,684		$	(15,123	)	(33.8	)%
Adjusted EBITDA(1)	$	324,506		$	343,015		$	(18,509	)	(5.4	)%
Adjusted EBITDA Margin(1)	30.8		%	32.9		%

_______________________________________________________________________________

(1) See "Non-GAAP Measures—Adjusted EBITDA" in this Quarterly Report for the definitions of Adjusted EBITDA and Adjusted EBITDA Margin, a reconciliation of Adjusted EBITDA to Income (Loss) from Continuing Operations and a discussion of why we believe these non-GAAP measures provide relevant and useful information to our current and potential investors.

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REVENUES

Consolidated revenues consists of the following (in thousands):

	Three Months Ended March 31,							Percentage Change
					Dollar Change			Actual		Constant Currency(1)		Organic Growth(2)
	2019		2018
Storage Rental	$	662,974	$	651,149	$	11,825		1.8	%	5.1	%	2.0	%
Service	390,889		391,309		(420		)	(0.1	)%	3.5	%	1.8	%
Total Revenues	$	1,053,863	$	1,042,458	$	11,405		1.1	%	4.5	%	1.9	%

_______________________________________________________________________________

(1) Constant currency growth rates are calculated by translating the 2018 results at the 2019 average exchange rates.

(2) Our organic revenue growth rate, which is a non-GAAP measure, represents the year-over-year growth rate of our revenues excluding the impact of business acquisitions, divestitures and foreign currency exchange rate fluctuations. Our organic revenue growth rate includes the impact of acquisitions of customer relationships.

Storage Rental Revenues

In the three months ended March 31, 2019, the increase in reported consolidated storage rental revenues was driven by the favorable impact of acquisitions/divestitures and consolidated organic storage rental revenue growth, partially offset by unfavorable fluctuations in foreign currency exchange rates. The net impact of acquisitions/divestitures contributed 3.1% to the reported storage rental revenue growth rates for the three months ended March 31, 2019 compared to the prior year period, primarily driven by acquisitions in our Global Data Center Business segment. Organic storage rental revenue growth of 2.0% in the three months ended March 31, 2019 compared to the prior year period was driven by organic storage rental revenue growth of 1.4% in our North American Records and Information Management Business segment due to revenue management partially offset by volume decreases, as well as organic storage rental revenue growth of 3.3% and 4.6% in our Western European Business and Other International Business segments, respectively, primarily a result of volume increases and, to a lesser extent, revenue management. Organic storage rental revenue growth in our North American Data Management Business segment was negative 2.9% for the three months ended March 31, 2019 compared to the prior year period primarily due to lower storage volume, partially offset by the impact of revenue management. Excluding the impact of acquisitions/divestitures, global records management net volumes as of March 31, 2019 increased by 0.3% over the ending volume as of March 31, 2018. Including the impact of acquisitions/divestitures, global records management net volumes as of March 31, 2019 increased by 1.5% over the ending volume at March 31, 2018, supported by net volume increases of 2.2% and 7.3% in our Western European Business and Other International Business segments, respectively, partially offset by a net volume decrease of 1.2% in our North American Records and Information Management Business segment. Foreign currency exchange rate fluctuations decreased our reported storage rental revenue growth rate for the three months ended March 31, 2019 by 3.3%, compared to the prior year period.

Service Revenues

In the three months ended March 31, 2019, the decrease in reported consolidated service revenues was driven by unfavorable fluctuations in foreign currency exchange rates, offset by organic service revenue growth and the favorable impact of acquisitions/divestitures. Foreign currency exchange rate fluctuations decreased our reported service revenue growth rate for the three months ended March 31, 2019 by 3.6%, compared to the prior year period. Organic service revenue growth of 1.8% for the three months ended March 31, 2019, compared to the prior year period was driven by organic service revenue growth of 2.3% in our North American Records and Information Management Business segment reflecting increased secured shredding revenues, primarily due to higher recycled paper prices, and project activity, partially offset by lower destructions, as well as organic service revenue growth of 3.0% in our Western European Business segment, primarily due to higher destruction activity, partially offset by continued declines in organic service revenue activity levels in our North American Data Management Business segment of negative 3.2%, as the storage business in this segment becomes more archival in nature and tape volumes decline. The net impact of acquisitions/divestitures contributed 1.7% to the reported service revenue growth rates for the three months ended March 31, 2019, compared to the prior year period.

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Total Revenues

For the reasons stated above, our reported consolidated revenues increased $11.4 million, or 1.1%, to $1,053.9 million for the three months ended March 31, 2019 from $1,042.5 million for the three months ended March 31, 2018. The net impact of acquisitions/divestitures contributed 2.6% to the reported consolidated revenue growth rate for the three months ended March 31, 2019 compared to the prior year period. Consolidated organic revenue growth was 1.9% in the three months ended March 31, 2019 compared to the prior year period. Foreign currency exchange rate fluctuations decreased our reported consolidated revenue growth rate for the three months ended March 31, 2019 by 3.4%, compared to the prior year period.

Organic Growth—Eight-Quarter Trend

	2017						2018								2019
	Second Quarter		Third Quarter		Fourth Quarter		First Quarter		Second Quarter		Third Quarter		Fourth Quarter		First Quarter
Storage Rental Revenue	4.8	%	3.5	%	4.2	%	3.7	%	1.9	%	2.3	%	1.9	%	2.0	%
Service Revenue	(1.1	)%	(0.2	)%	(0.1	)%	1.4	%	7.6	%	7.1	%	6.1	%	1.8	%
Total Revenues	2.5	%	2.0	%	2.5	%	2.8	%	4.1	%	4.1	%	3.5	%	1.9	%

We expect our consolidated organic storage rental revenue growth rate for 2019 to be approximately 1.75% to 2.5% and our consolidated organic total revenue growth rate to be approximately 2.0% to 2.5%. During the past eight quarters, our organic storage rental revenue growth rate has ranged between 1.9% and 4.8%. Consolidated organic storage rental revenue growth and consolidated total organic revenue growth benefited by approximately 0.8% and 0.5%, respectively, in the second quarter of 2017, from a $4.2 million customer termination fee in our Global Data Center Business segment. Conversely, consolidated organic storage rental revenue growth and consolidated total organic revenue growth for the second quarter of 2018 were negatively impacted by the 0.8% and 0.5%, respectively, related to this termination fee. Our organic storage rental revenue growth rates have declined over the past two fiscal years, as organic storage rental revenue growth for full year 2017 and 2018 was 3.9% and 2.4%, respectively. At various points in the economic cycle, organic storage rental revenue growth may be influenced by changes in pricing and volume. In 2018 and in the three months ended March 31, 2019, we experienced modest volume declines in our North American Records and Information Management Business and North American Data Management Business segments, with organic storage rental revenue growth coming primarily from revenue management in these segments and volume growth in our Western European Business and Other International Business segments. Within these business segments, we expect these trends to continue into the next few years.

The organic growth rate for service revenue is inherently more volatile than the organic growth rate for storage rental revenues due to the more discretionary nature of certain services we offer, such as large special projects, and, as a commodity, the volatility of pricing for recycled paper. These revenues, which are often event-driven and impacted to a greater extent by economic downturns as customers defer or cancel the purchase of certain services as a way to reduce their short-term costs, may be difficult to replicate in future periods. The organic growth rate for total service revenues over the past eight quarters reflects reduced retrieval/re-file activity and a related decrease in transportation revenues within our North American Records and Information Management Business and Western European Business segments, as well as continued declines in service revenue activity levels in our North American Data Management Business segment, as the storage business becomes more archival in nature and tape volumes decline. The recent increases in organic service revenue growth rates of 7.6%, 7.1% and 6.1% in the second, third and fourth quarters of 2018 reflect a strong contribution from our secure shredding business, which benefited from higher recycled paper prices, higher destruction activity and acquisitions of customer relationships. Organic service revenue growth declined to 1.8% for the first quarter of 2019 reflecting declining recycled paper prices and moderation of destruction activity compared to previous quarters. We expect these trends to continue throughout 2019.

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OPERATING EXPENSES

Cost of Sales

Consolidated cost of sales (excluding depreciation and amortization) consists of the following expenses (in thousands):

	Three Months Ended March 31,							Percentage Change				% of Consolidated Revenues				Percentage Change (Favorable)/ Unfavorable
					Dollar Change			Actual		Constant Currency
	2019		2018									2019		2018
Labor	$	205,291	$	208,907	$	(3,616	)	(1.7	)%	2.5	%	19.5	%	20.0	%	(0.5	)%
Facilities	174,719		162,112		12,607			7.8	%	11.6	%	16.6	%	15.6	%	1.0	%
Transportation	41,040		38,273		2,767			7.2	%	11.3	%	3.9	%	3.7	%	0.2	%
Product Cost of Sales and Other	39,596		39,133		463			1.2	%	5.9	%	3.8	%	3.8	%	—	%
Significant Acquisition Costs	898		296		602			203.4	%	279.7	%	0.1	%	—	%	0.1	%
Total Cost of Sales	$	461,544	$	448,721	$	12,823		2.9	%	7.0	%	43.8	%	43.0	%	0.8	%

Labor

Labor expenses decreased to 19.5% of consolidated revenues in the three months ended March 31, 2019 compared to 20.0% in the three months ended March 31, 2018. The decrease in labor expenses as a percentage of consolidated revenues was primarily driven by basis point improvements across our North American Records and Information Management Business, Western European Business and Other International Business segments, partially attributable to ongoing cost management initiatives. On a constant dollar basis, labor expenses for the three months ended March 31, 2019 increased by $5.0 million, or 2.5%, compared to the prior year period, primarily driven by acquisitions in our Global Data Center Business segment and our Adjacent Businesses operating segment within our Corporate and Other Business segment, as well as increased labor costs related to shredding operations within our North American Records and Information Management Business segment.

Facilities

Facilities expenses increased to 16.6% of consolidated revenues in the three months ended March 31, 2019 compared to 15.6% in the three months ended March 31, 2018. The 100 basis point increase in facilities expenses as a percentage of consolidated revenues was driven primarily by acquisitions in our Global Data Center Business segment and our Adjacent Businesses operating segment within our Corporate and Other Business segment, as well as higher facilities costs in our Western European Business segment. On a constant dollar basis, facilities expenses for the three months ended March 31, 2019 increased by $18.5 million, or 11.6%, compared to the prior year period, primarily driven by acquisitions mentioned above and higher facilities costs in our Western European Business segment.

Transportation

Transportation expenses increased to 3.9% of consolidated revenues in the three months ended March 31, 2019 compared to 3.7% in the three months ended March 31, 2018. The increase in transportation expenses as a percentage of consolidated revenues was primarily driven by increases in third party carrier expenses, in part due to recent acquisitions in our Adjacent Businesses operating segment within our Corporate and Other Business segment. On a constant dollar basis, transportation expenses for the three months ended March 31, 2019 increased by $4.2 million, or 11.3%, compared to the prior year period, primarily driven by increases in third party carrier expenses, in part due to recent acquisitions in our Adjacent Businesses operating segment within our Corporate and Other Business segment, as well as higher transportation cost for shredding operations within our North American Records and Information Management Business segment.

Product Cost of Sales and Other

Product cost of sales and other, which includes cartons, media and other service, storage and supply costs and is highly correlated to service revenue streams, particularly project revenues, were 3.8% of consolidated revenues for the three months ended March 31, 2019 compared to 3.8% in the three months ended March 31, 2018. On a constant dollar basis, product cost of sales and other increased by $2.2 million, or 5.9%, compared to the prior year period, primarily driven by special project costs in our North American Records and Information Management Business segment.

54

Significant Acquisition Costs

Significant Acquisition Costs included in cost of sales were $0.9 million and $0.3 million in the three months March 31, 2019 and 2018, respectively, and primarily consisted of employee severance costs and facility integration costs associated with the Recall acquisition.

Selling, General and Administrative Expenses

Selling, general and administrative expenses consists of the following expenses (in thousands):

	Three Months Ended March 31,							Percentage Change				% of Consolidated Revenues				Percentage Change (Favorable)/ Unfavorable
					Dollar Change			Actual		Constant Currency
	2019		2018									2019		2018
General and Administrative	$	151,332	$	136,293	$	15,039		11.0	%	14.6	%	14.4	%	13.1	%	1.3	%
Sales, Marketing & Account Management	66,170		68,873		(2,703		)	(3.9	)%	(1.4	)%	6.3	%	6.6	%	(0.3	)%
Information Technology	46,171		39,504		6,667			16.9	%	19.1	%	4.4	%	3.8	%	0.6	%
Bad Debt Expense	5,038		6,348		(1,310		)	(20.6	)%	(18.6	)%	0.5	%	0.6	%	(0.1	)%
Significant Acquisition Costs	1,848		18,712		(16,864		)	(90.1	)%	(90.0	)%	0.2	%	1.8	%	(1.6	)%
Total Selling, General and Administrative Expenses	$	270,559	$	269,730	$	829		0.3	%	3.0	%	25.7	%	25.9	%	(0.2	)%

General and Administrative

General and administrative expenses increased to 14.4% of consolidated revenues in the three months ended March 31, 2019 compared to 13.1% in the three months ended March 31, 2018. The increase in general and administrative expenses as a percentage of consolidated revenues was driven mainly by higher compensation and professional fees within the Corporate and Other Business segment, primarily associated with our new global operations support team that is tasked with driving operational improvements, and acquisitions in the Global Data Center Business segment. On a constant dollar basis, general and administrative expenses for the three months ended March 31, 2019 increased by $19.2 million, or 14.6%, compared to the prior year period, primarily driven by increases in compensation and professional fees related to our global operations support team.

Sales, Marketing & Account Management

Sales, marketing and account management expenses decreased to 6.3% of consolidated revenues in the three months ended March 31, 2019 compared to 6.6% in the three months ended March 31, 2018. The decrease in sales, marketing and account management expenses as a percentage of consolidated revenues was driven by a decrease in compensation expense, primarily due to lower commissions and marketing expenses. On a constant dollar basis, sales, marketing and account management expenses for the three months ended March 31, 2019 decreased by $0.9 million, or 1.4%, compared to the prior year period, primarily driven by lower marketing expense.

Information Technology

Information technology expenses increased to 4.4% of consolidated revenues in the three months ended March 31, 2019 compared to 3.8% in the three months ended March 31, 2018. Information technology expenses as a percentage of consolidated revenues reflect an increase in professional fees and compensation, primarily related to information security costs and investments in innovation and product development. On a constant dollar basis, information technology expenses for the three months ended March 31, 2019 increased by $7.4 million, or 19.1%, compared to the prior year period, primarily driven by an increase in professional fees and compensation, primarily related to information security costs and investments in innovation and product development.

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Bad Debt Expense

We maintain an allowance for doubtful accounts that is calculated based on our past loss experience, current and prior trends in our aged receivables, current economic conditions, and specific circumstances of individual receivable balances. We continue to monitor our customers' payment activity and make adjustments based on their financial condition and in light of historical and expected trends. Bad debt expense for the three months ended March 31, 2019 decreased by $1.2 million on a constant dollar basis compared to the prior year period, primarily driven by lower bad debt expense associated with our Western European and Other International Business segments.

Significant Acquisition Costs

Significant Acquisition Costs included in selling, general and administrative expenses were $1.8 million and $18.7 million in the three months ended March 31, 2019 and 2018, respectively, and primarily consisted of advisory and professional fees, as well as severance costs.

Depreciation and Amortization

Our depreciation and amortization charges result primarily from depreciation related to storage systems, which include racking structures, buildings, building and leasehold improvements and computer systems hardware and software. Amortization relates primarily to customer relationship intangible assets, contract fulfillment costs and data center lease-based intangible assets. Both depreciation and amortization are impacted by the timing of acquisitions.

Depreciation expense increased $1.2 million, or 1.0%, on a reported dollar basis for the three months ended March 31, 2019 compared to the three months ended March 31, 2018. See Note 2.f. to Notes to Consolidated Financial Statements included in our Annual Report for additional information regarding the useful lives over which our property, plant and equipment is depreciated.

Amortization expense increased $0.7 million, or 1.5%, on a reported dollar basis for the three months ended March 31, 2019 compared to the three months ended March 31, 2018.

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OTHER EXPENSES, NET

Interest Expense, Net

Consolidated interest expense, net increased $4.8 million, or 4.9%, to $102.4 million in the three months ended March 31, 2019 from $97.6 million in the three months ended March 31, 2018. This increase was a result of higher average debt outstanding and higher weighted average interest rate during the three months ended March 31, 2019. Our weighted average interest rate was 4.9% and 4.8% at March 31, 2019 and 2018, respectively. See Note 4 to Notes to Condensed Consolidated Financial Statements included in this Quarterly Report for additional information regarding our indebtedness.

Other (Income) Expense, Net (in thousands)

	Three Months Ended March 31,						Dollar Change
	2019			2018
Foreign currency transaction losses (gains), net	$	17,697		$	21,785		$	(4,088	)
Other, net	(2,487		)	(1,634		)	(853		)
	$	15,210		$	20,151		$	(4,941	)

Foreign Currency Transaction Losses (Gains)

We recorded net foreign currency transaction losses of $17.7 million in the three months ended March 31, 2019, based on period-end exchange rates. These losses resulted primarily from the impact of changes in the exchange rate of each of the British pound sterling and Euro against the United States dollar compared to December 31, 2018 on our intercompany balances with and between certain of our subsidiaries.

We recorded net foreign currency transaction losses of $21.8 million in the three months ended March 31, 2018, based on period-end exchange rates. These losses resulted primarily from the impact of changes in the exchange rate of each of the British pound sterling and Euro against the United States dollar compared to December 31, 2017 on our intercompany balances with and between certain of our subsidiaries and the Euro Notes (as defined below). These losses were partially offset by gains resulting primarily from the impact of changes in the exchange rate of the Canadian dollar against the United States dollar compared to December 31, 2017 on our intercompany balances with and between certain of our subsidiaries.

Other, net

Other, net for the three months ended March 31, 2019 is primarily associated with the gain on sale resulting from the Consumer Storage Transaction (as defined and discussed more fully in Note 9 to Notes to Condensed Consolidated Financial Statements included in this Quarterly Report) of approximately $4.2 million. Other, net for the three months ended March 31, 2019 also includes the change in estimated fair value of the noncontrolling interests associated with our business in India, which are accounted for as mandatorily redeemable noncontrolling interests.

Provision for Income Taxes

We provide for income taxes during interim periods based on our estimate of the effective tax rate for the year. Our estimate of the effective tax rate for the years ending December 31, 2019 and 2018 reflect the impact of the U.S. tax reform legislation, commonly referred to as the Tax Cuts and Jobs Act (the “Tax Reform Legislation”). See Note 7 to Notes to Consolidated Financial Statements included in our Annual Report for additional information regarding the impact the Tax Reform Legislation had on us. Discrete items and changes in our estimate of the annual effective tax rate are recorded in the period they occur. Our effective tax rate is subject to variability in the future due to, among other items: (1) changes in the mix of income between our qualified REIT subsidiaries and our domestic taxable REIT subsidiaries, as well as among the jurisdictions in which we operate; (2) tax law changes; (3) volatility in foreign exchange gains and losses; (4) the timing of the establishment and reversal of tax reserves; and (5) our ability to utilize net operating losses that we generate.

57

Our effective tax rates for the three months ended March 31, 2019 and 2018 are as follows:

	Three Months Ended March 31,
	2019(1)		2	2018(2)
Effective Tax Rate	25.7	%		2.5

_______________________________________________________________________________

(1) The primary reconciling items between the federal statutory tax rate of 21.0% and our overall effective tax rate for the three months ended March 31, 2019 were the benefit derived from the dividends paid deduction and the impact of differences in the tax rates at which our foreign earnings are subject, including foreign exchange gains and losses in different jurisdictions with different tax rates.

(2) The primary reconciling items between the federal statutory tax rate of 21.0% and our overall effective tax rate for the three months ended March 31, 2018 were the benefit derived from the dividends paid deduction, a discrete tax benefit of approximately $14.0 million associated with the resolution of a tax matter and the impact of differences in the tax rates at which our foreign earnings are subject, including foreign exchange gains and losses in different jurisdictions with different tax rates.

INCOME (LOSS) FROM CONTINUING OPERATIONS AND ADJUSTED EBITDA (in thousands)

The following table reflects the effect of the foregoing factors on our consolidated income (loss) from continuing operations and Adjusted EBITDA:

	Three Months Ended March 31,						Dollar Change			Percentage Change
	2019			2018
Income from Continuing Operations	$	30,476		$	45,614		$	(15,138	)	(33.2	)%
Income from Continuing Operations as a percentage of Consolidated Revenue	2.9		%	4.4		%
Adjusted EBITDA	$	324,506		$	343,015		$	(18,509	)	(5.4	)%
Adjusted EBITDA Margin	30.8		%	32.9		%

Consolidated Adjusted EBITDA for the three months ended March 31, 2019 decreased by $18.5 million, or approximately 5.4%, and consolidated Adjusted EBITDA Margin decreased by 210 basis points compared to the same prior year period, primarily as a result of increased labor costs in our secure shredding business, higher technology costs associated with information security investments and higher overhead expenses associated with the growth of our data center business.

(LOSS) INCOME FROM DISCONTINUED OPERATIONS, NET OF TAX

Loss from discontinued operations, net of tax was $0.5 million for the three months ended March 31, 2018, primarily related to the costs associated with the Recall Divestments (as discussed in Note 13 to Notes to Consolidated Financial Statements in our Annual Report).

NONCONTROLLING INTERESTS

For the three months ended March 31, 2019 and 2018, net income attributable to noncontrolling interests resulted in a decrease in net income attributable to IMI of $0.9 million and $0.5 million, respectively. These amounts represent our noncontrolling partners' share of earnings/losses in our majority-owned international subsidiaries that are consolidated in our operating results.

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Segment Analysis (in thousands)

See Note 9 to Notes to Consolidated Financial Statements included in our Annual Report for a description of our reportable operating segments.

North American Records and Information Management Business

	Three Months Ended March 31,									Percentage Change
							Dollar Change			Actual		Constant Currency		Organic Growth
	2019			2018
Storage Rental	$	306,986		$	304,819		$	2,167		0.7	%	1.2	%	1.4	%
Service	220,394			222,024			(1,630		)	(0.7	)%	(0.2	)%	2.3	%
Segment Revenue	$	527,380		$	526,843		$	537		0.1	%	0.6	%	1.8	%
Segment Adjusted EBITDA(1)	$	223,683		$	225,738		$	(2,055	)
Segment Adjusted EBITDA Margin(2)	42.4		%	42.8		%

_______________________________________________________________________________

(1) See "Non-GAAP Measures—Adjusted EBITDA" in this Quarterly Report for the definitions of Adjusted EBITDA and Adjusted EBITDA Margin, a reconciliation of Adjusted EBITDA to Income (Loss) from Continuing Operations and a discussion of why we believe these non-GAAP measures provide relevant and useful information to our current and potential investors.

(2) Segment Adjusted EBITDA Margin is calculated by dividing Segment Adjusted EBITDA by total segment revenues.

For the three months ended March 31, 2019, reported revenue in our North American Records and Information Management Business segment increased 0.1%, compared to the three months ended March 31, 2018, due to organic revenue growth, offset by the unfavorable net impact of acquisitions/dispositions (due to the IMFS Divestment) and foreign currency exchange rates. Organic revenue growth of 1.8% was primarily the result of organic storage rental revenue growth of 1.4% driven by revenue management, partially offset by volume decreases. In addition, organic service revenue growth of 2.3% was driven by growth in secure shredding revenue, in part due to higher recycled paper prices, and increased project activity, partially offset by lower destruction activity compared to the first quarter of 2018. Adjusted EBITDA margin decreased 40 basis points during the three months ended March 31, 2019 compared to the three months ended March 31, 2018, primarily driven by higher labor and transportation costs in our secure shredding business.

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North American Data Management Business

	Three Months Ended March 31,									Percentage Change
							Dollar Change			Actual		Constant Currency		Organic Growth
	2019			2018
Storage Rental	$	66,572		$	69,246		$	(2,674	)	(3.9	)%	(3.5	)%	(2.9	)%
Service	30,175			30,718			(543		)	(1.8	)%	(1.4	)%	(3.2	)%
Segment Revenue	$	96,747		$	99,964		$	(3,217	)	(3.2	)%	(2.9	)%	(3.0	)%
Segment Adjusted EBITDA(1)	$	50,552		$	53,852		$	(3,300	)
Segment Adjusted EBITDA Margin(2)	52.3		%	53.9		%

_______________________________________________________________________________

(1) See "Non-GAAP Measures—Adjusted EBITDA" in this Quarterly Report for the definitions of Adjusted EBITDA and Adjusted EBITDA Margin, a reconciliation of Adjusted EBITDA to Income (Loss) from Continuing Operations and a discussion of why we believe these non-GAAP measures provide relevant and useful information to our current and potential investors.

(2) Segment Adjusted EBITDA Margin is calculated by dividing Segment Adjusted EBITDA by total segment revenues.

For the three months ended March 31, 2019, reported revenue in our North American Data Management Business segment decreased 3.2%, compared to the three months ended March 31, 2018, primarily due to negative organic revenue growth. The negative organic revenue growth of 3.0% was primarily attributable to a decline in organic service revenue growth of 3.2% due to continued declines in service revenue activity levels as the business becomes more archival in nature and tape volumes decline, as well as a decline in organic storage rental revenue of 2.9%, primarily attributable to volume decreases, partially offset by the impact of revenue management. Adjusted EBITDA margin decreased 160 basis points during the three months ended March 31, 2019 compared to the three months ended March 31, 2018, primarily associated with investments in new products and services, as well as lower revenue not being offset by lower fixed costs.

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Western European Business

	Three Months Ended March 31,									Percentage Change
							Dollar Change			Actual		Constant Currency		Organic Growth
	2019			2018
Storage Rental	$	80,695		$	83,952		$	(3,257	)	(3.9	)%	3.3	%	3.3	%
Service	48,058			50,123			(2,065		)	(4.1	)%	3.0	%	3.0	%
Segment Revenue	$	128,753		$	134,075		$	(5,322	)	(4.0	)%	3.2	%	3.2	%
Segment Adjusted EBITDA(1)	$	39,209		$	43,966		$	(4,757	)
Segment Adjusted EBITDA Margin(2)	30.5		%	32.8		%

_______________________________________________________________________________

(1) See "Non-GAAP Measures—Adjusted EBITDA" in this Quarterly Report for the definitions of Adjusted EBITDA and Adjusted EBITDA Margin, a reconciliation of Adjusted EBITDA to Income (Loss) from Continuing Operations and a discussion of why we believe these non-GAAP measures provide relevant and useful information to our current and potential investors.

(2) Segment Adjusted EBITDA Margin is calculated by dividing Segment Adjusted EBITDA by total segment revenues.

For the three months ended March 31, 2019, reported revenue in our Western European Business segment decreased 4.0%, compared to the three months ended March 31, 2018, due to unfavorable fluctuations in foreign currency exchange rates, partially offset by organic revenue growth. Organic revenue growth was 3.2%, primarily attributable to organic storage rental revenue growth of 3.3%, primarily associated with volume increases and, to a lesser extent, revenue management, as well as organic service revenue growth of 3.0%, reflecting higher destruction activity. For the three months ended March 31, 2019, foreign currency exchange rate fluctuations decreased our reported revenues for the Western European Business segment by 7.2% compared to the prior year period due to the weakening of the British pound sterling and Euro against the United States dollar. Adjusted EBITDA margin decreased 230 basis points during the three months ended March 31, 2019 compared to the three months ended March 31, 2018, primarily driven by higher facilities costs and professional fees, partially offset by lower bad debt expense and labor costs growing at a lower rate than revenue.

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Other International Business

	Three Months Ended March 31,									Percentage Change
							Dollar Change			Actual		Constant Currency		Organic Growth
	2019			2018
Storage Rental	$	129,473		$	131,747		$	(2,274	)	(1.7	)%	8.6	%	4.6	%
Service	71,483			79,020			(7,537		)	(9.5	)%	1.3	%	(0.6	)%
Segment Revenue	$	200,956		$	210,767		$	(9,811	)	(4.7	)%	5.9	%	2.7	%
Segment Adjusted EBITDA(1)	$	58,124		$	60,747		$	(2,623	)
Segment Adjusted EBITDA Margin(2)	28.9		%	28.8		%

_____________________________________________________________________________

(1) See "Non-GAAP Measures—Adjusted EBITDA" in this Quarterly Report for the definitions of Adjusted EBITDA and Adjusted EBITDA Margin, a reconciliation of Adjusted EBITDA to Income (Loss) from Continuing Operations and a discussion of why we believe these non-GAAP measures provide relevant and useful information to our current and potential investors.

(2) Segment Adjusted EBITDA Margin is calculated by dividing Segment Adjusted EBITDA by total segment revenues.

In the three months ended March 31, 2019, reported revenue in our Other International Business segment decreased 4.7%, compared to the three months ended March 31, 2018, due to unfavorable fluctuations in foreign currency exchange rates, partially offset by organic revenue growth and the favorable impact of acquisitions/divestitures. Organic revenue growth was 2.7%, supported by 4.6% organic storage rental revenue growth, primarily due to volume increases and, to a lesser extent, revenue management, and negative 0.6% organic service revenue growth, primarily due to a decrease in project activity. The net impact of acquisitions/divestitures contributed 3.2% to reported revenue growth for the three months ended March 31, 2019, compared to the prior year period. For the three months ended March 31, 2019, foreign currency exchange rate fluctuations decreased our reported revenues for the Other International Business segment by 10.6% compared to the prior year period primarily due to the weakening of the Australian dollar and Brazilian real against the United States dollar. Adjusted EBITDA margin increased 10 basis points for the three months ended March 31, 2019 compared to the three months ended March 31, 2018, primarily due to compensation growing at a lower rate than revenue and a decrease in transportation costs.

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Global Data Center Business

	Three Months Ended March 31,								Percentage Change
							Dollar Change		Actual		Constant Currency		Organic Growth
	2019			2018
Storage Rental	$	59,718		$	45,495		$	14,223	31.3	%	31.4	%	2.6	%
Service	1,818			1,108			710		64.1	%	64.2	%	34.2	%
Segment Revenue	$	61,536		$	46,603		$	14,933	32.0	%	32.2	%	3.3	%
Segment Adjusted EBITDA(1)	$	26,011		$	20,790		$	5,221
Segment Adjusted EBITDA Margin(2)	42.3		%	44.6		%

_____________________________________________________________________________

(1) See "Non-GAAP Measures—Adjusted EBITDA" in this Quarterly Report for the definitions of Adjusted EBITDA and Adjusted EBITDA Margin, a reconciliation of Adjusted EBITDA to Income (Loss) from Continuing Operations and a discussion of why we believe these non-GAAP measures provide relevant and useful information to our current and potential investors.

(2) Segment Adjusted EBITDA Margin is calculated by dividing Segment Adjusted EBITDA by total segment revenues.

For the three months ended March 31, 2019, reported revenue in our Global Data Center Business segment increased 32.0% compared to the three months ended March 31, 2018, primarily due to the impact of acquisitions (see Note 6 of Notes to Consolidated Financial Statements included in our Annual Report for additional acquisition details). The impact of acquisitions contributed 28.9% to the reported revenue growth rate in our Global Data Center Business segment for the three months ended March 31, 2019 compared to the prior year period. Adjusted EBITDA increased $5.2 million for the three months ended March 31, 2019 compared to the prior year period, primarily due to the impact of acquisitions. Adjusted EBITDA margin decreased 230 basis points during the three months ended March 31, 2019 compared to the prior year period primarily due to lower gross margin associated with recent acquisitions and increased overhead to support the growth of this business.

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Corporate and Other Business

	Three Months Ended March 31,									Percentage Change
							Dollar Change			Actual		Constant Currency		Organic Growth
	2019			2018
Storage Rental	$	19,530		$	15,890		$	3,640		22.9	%	24.3	%	7.0	%
Service	18,961			8,316			10,645			128.0	%	139.3	%	16.2	%
Segment Revenue	$	38,491		$	24,206		$	14,285		59.0	%	62.8	%	10.1	%
Segment Adjusted EBITDA(1)	$	(73,073	)	$	(62,078	)	$	(10,995	)
Segment Adjusted EBITDA(1) as a percentage of Consolidated Revenue	(6.9		)%	(6.0		)%

_______________________________________________________________________________

(1) See "Non-GAAP Measures—Adjusted EBITDA" in this Quarterly Report for the definitions of Adjusted EBITDA and Adjusted EBITDA Margin, a reconciliation of Adjusted EBITDA to Income (Loss) from Continuing Operations and a discussion of why we believe these non-GAAP measures provide relevant and useful information to our current and potential investors.

During the three months ended March 31, 2019, Adjusted EBITDA in the Corporate and Other Business segment as a percentage of consolidated revenues decreased 90 basis points compared to the three months ended March 31, 2018. Adjusted EBITDA in the Corporate and Other Business segment decreased $11.0 million in the three months ended March 31, 2019 compared to the three months ended March 31, 2018, primarily driven by higher compensation and professional fees associated with investments in our global operations support team that is tasked with driving operational improvements and continued investment in innovation and product development, partially offset by profitability associated with recent acquisitions in our Adjacent Businesses operating segment.

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Liquidity and Capital Resources

The following is a summary of our cash balances and cash flows (in thousands) as of and for the three months ended March 31,

	2019			2018
Cash flows from operating activities - continuing operations	$	117,067		$	91,568
Cash flows from investing activities - continuing operations	(311,217		)	(1,562,012		)
Cash flows from financing activities - continuing operations	187,736			985,252
Cash and cash equivalents at the end of period	161,475			442,491

Cash Flows from Operating Activities

For the three months ended March 31, 2019, net cash flows provided by operating activities increased by $25.5 million compared to the prior year period, primarily due to a decrease in cash used in working capital of $45.3 million, primarily related to the timing of collections of accounts receivable and certain prepaid and accrued expenses, offset by a decrease in net income (including non-cash charges and realized foreign exchange losses) of $19.8 million.

Cash Flows from Investing Activities

Our significant investing activities during the three months ended March 31, 2019 are highlighted below:

• We paid cash for acquisitions (net of cash acquired) of $39.4 million, primarily funded by borrowings under our revolving credit facility (the "Revolving Credit Facility").

• We paid cash for capital expenditures of $184.8 million. Our business requires capital expenditures to maintain our ongoing operations, support our expected revenue growth and new products and services, and increase our profitability. All of these expenditures are included in the cash flows from investing activities. Additional details of our capital spending is included in the Capital Expenditures section below.

• We acquired customer relationships, and incurred both (i) customer inducements (which consist primarily of permanent withdrawal fees) and (ii) Contract Fulfillment Costs (as defined in Note 2.c. to Notes to Condensed Consolidated Financial Statements included in this Quarterly Report) and third-party commissions during the three months ended March 31, 2019 of $23.9 million, $2.8 million and $41.2 million, respectively.

• We paid $19.2 million as part of our investment in Makespace (as discussed in Note 9 to Notes to Condensed Consolidated Financial Statements included in this Quarterly Report).

Cash Flows from Financing Activities

Our significant financing activities during the three months ended March 31, 2019 included:

• Net proceeds of $372.2 million primarily associated with the borrowings and repayments on our Revolving Credit Facility.

• Payment of dividends in the amount of $178.0 million on our common stock.

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Capital Expenditures

The following table presents our capital spend for the three months ended March 31, 2019 and 2018, organized by the type of the spending as described in our Annual Report:

	Three Months Ended March 31,
Nature of Capital Spend (in thousands)	2019		2018
Growth Investment Capital Expenditures:
Real Estate(1)	$	14,836	$	21,207
Non-Real Estate(2)	8,825		8,309
Data Center(3)	131,078		14,770
Innovation(1)	4,781		2,193
Total Growth Investment Capital Expenditures	159,520		46,479
Recurring Capital Expenditures:
Real Estate(2)	10,699		8,999
Non-Real Estate(2)	4,496		5,961
Data Center(3)	662		426
Total Recurring Capital Expenditures	15,857		15,386
Total Capital Spend (on accrual basis)	175,377		61,865
Net increase (decrease) in prepaid capital expenditures	1,069		(598		)
Net decrease (increase) in accrued capital expenditures	8,319		34,338
Total Capital Spend (on cash basis)	$	184,765	$	95,605

_______________________________________________________________________________

For the year ending December 31, 2019, excluding capital expenditures associated with potential future acquisitions, opportunistic real estate investments and capital expenditures associated with the integrations of Recall and IODC, we expect the following:

(1) Growth investment capital expenditures on real estate growth and innovation to be approximately $175.0 million;

(2) Recurring capital expenditures on real estate and non-real estate, as well as non-real estate growth investment capital expenditures, to be approximately $145.0 million to $155.0 million; and

(3) Capital expenditures on our data center business to be approximately $250.0 million.

Dividends

See Note 8 to Notes to Condensed Consolidated Financial Statements included in this Quarterly Report for a listing of dividends that were declared during the first three months of 2019 and fiscal year 2018.

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Financial Instruments and Debt

Financial instruments that potentially subject us to credit risk consist principally of cash and cash equivalents (including money market funds and time deposits) and accounts receivable. The only significant concentration of liquid investment as of March 31, 2019 is related to cash and cash equivalents. See Note 2.h. to Notes to the Condensed Consolidated Financial Statements included in this Quarterly Report for information on our time deposits.

Long-term debt as of March 31, 2019 is as follows (in thousands):

	March 31, 2019
	Debt (inclusive of discount)			Unamortized Deferred Financing Costs			Carrying Amount
Revolving Credit Facility	$	1,139,566		$	(13,332	)	$	1,126,234
Term Loan A	237,500			—			237,500
Term Loan B	691,476			(8,430		)	683,046
Australian Dollar Term Loan	234,000			(2,893		)	231,107
UK Bilateral Revolving Credit Facility	182,450			(2,255		)	180,195
43/8% Senior Notes due 2021	500,000			(3,725		)	496,275
6% Senior Notes due 2023	600,000			(4,851		)	595,149
53/8% CAD Senior Notes due 2023	187,262			(2,424		)	184,838
53/4% Senior Subordinated Notes due 2024	1,000,000			(7,439		)	992,561
3% Euro Senior Notes due 2025	336,557			(3,941		)	332,616
37/8% GBP Senior Notes due 2025 (the "GBP Notes")	521,286			(6,480		)	514,806
53/8% Senior Notes due 2026	250,000			(3,078		)	246,922
47/8% Senior Notes due 2027 (the "47/8% Notes")	1,000,000			(12,086		)	987,914
51/4% Senior Notes due 2028 (the "51/4% Notes")	825,000			(10,628		)	814,372
Real Estate Mortgages, Financing Lease Liabilities and Other	566,677			(431		)	566,246
Accounts Receivable Securitization Program	252,373			(184		)	252,189
Mortgage Securitization Program	50,000			(1,091		)	48,909
Total Long-term Debt	8,574,147			(83,268		)	8,490,879
Less Current Portion	(125,142		)	—			(125,142		)
Long-term Debt, Net of Current Portion	$	8,449,005		$	(83,268	)	$	8,365,737

See Note 4 to Notes to Consolidated Financial Statements included in our Annual Report and Note 4 to Notes to Condensed Consolidated Financial Statements included in this Quarterly Report for additional information regarding our long-term debt.

Debt Covenants

The Credit Agreement, our indentures and other agreements governing our indebtedness contain certain restrictive financial and operating covenants, including covenants that restrict our ability to complete acquisitions, pay cash dividends, incur indebtedness, make investments, sell assets and take certain other corporate actions. The covenants do not contain a rating trigger. Therefore, a change in our debt rating would not trigger a default under the Credit Agreement, our indentures or other agreements governing our indebtedness. The Credit Agreement uses EBITDAR-based calculations as the primary measures of financial performance, including leverage and fixed charge coverage ratios.

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Our leverage and fixed charge coverage ratios under the Credit Agreement as of March 31, 2019 and December 31, 2018, as well as our leverage ratio under our indentures as of March 31, 2019 and December 31, 2018 are as follows:

	March 31, 2019	December 31, 2018	Maximum/Minimum Allowable
Net total lease adjusted leverage ratio	5.8	5.6	Maximum allowable of 6.5
Net secured debt lease adjusted leverage ratio	2.8	2.6	Maximum allowable of 4.0
Bond leverage ratio (not lease adjusted)	6.1	5.8	Maximum allowable of 6.5-7.0(1)
Fixed charge coverage ratio	2.2	2.2	Minimum allowable of 1.5

______________________________________________________________

(1) The maximum allowable leverage ratio under our indentures for the 4⁷/₈% Notes, the GBP Notes and the 5¹/₄% Notes is 7.0, while the maximum allowable leverage ratio under the indentures pertaining to our remaining senior and senior subordinated notes is 6.5. In certain instances as provided in our indentures, we have the ability to incur additional indebtedness that would result in our bond leverage ratio exceeding the maximum allowable ratio under our indentures and still remain in compliance with the covenant.

Noncompliance with these leverage and fixed charge coverage ratios would have a material adverse effect on our financial condition and liquidity.

_______________________________________________________________________________

Our ability to pay interest on or to refinance our indebtedness depends on our future performance, working capital levels and capital structure, which are subject to general economic, financial, competitive, legislative, regulatory and other factors which may be beyond our control. There can be no assurance that we will generate sufficient cash flow from our operations or that future financings will be available on acceptable terms or in amounts sufficient to enable us to service or refinance our indebtedness or to make necessary capital expenditures.

At The Market (ATM) Equity Program

As described in greater detail in Note 12 to Notes to Consolidated Financial Statements included in our Annual Report, we entered into a distribution agreement with a syndicate of 10 banks (the “Agents”) pursuant to which we may sell, from time to time, up to an aggregate sales price of $500.0 million of our common stock through the Agents (the “At The Market (ATM) Equity Program”). There were no shares of common stock sold under the At the Market (ATM) Equity Program during the three months ended March 31, 2019. During the three months ended March 31, 2018 under the At The Market (ATM) Equity Program, we sold an aggregate of 273,486 shares of common stock for gross proceeds of approximately $8.8 million, generating net proceeds of $8.7 million, after deducting commissions of $0.1 million. As of March 31, 2019, the remaining aggregate sale price of shares of our common stock available for distribution under the At The Market (ATM) Equity Program was approximately $431.2 million.

Acquisitions

See Note 3 to Notes to Condensed Consolidated Financial Statements included in this Quarterly Report for information regarding our 2019 acquisitions.

Included in Significant Acquisition Costs are certain costs associated with the Recall Transaction and the IODC Transaction. This amount consists of (i) Significant Acquisition Costs and (ii) capital expenditures to integrate Recall with our existing operations. We currently estimate total acquisition and integration expenditures associated with the Recall Transaction and acquisition expenditures associated with the IODC Transaction to be approximately $405.0 million, the substantial majority of which was incurred prior to the end of 2018.

The following table presents the cumulative amount of operating and capital expenditures incurred during the three months ended March 31, 2019 and 2018, as well as the cumulative amount incurred through March 31, 2019, associated with the Recall Transaction and the IODC Transaction (in thousands):

	Cumulative Total Through  March 31, 2019		Three Months Ended March 31, 2019		Three Months Ended March 31, 2018
Significant Acquisition Costs	$	317,270	$	2,746	$	19,008
Recall Capital Expenditures	74,730		1,193		1,884
Total	$	392,000	$	3,939	$	20,892

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Contractual Obligations

We expect to meet our cash flow requirements for the next twelve months by utilizing cash on hand, cash generated from operations, borrowings under the Credit Agreement and other financings (including the issuance of equity under the At The Market (ATM) Equity Program). We expect to meet our long-term cash flow requirements using the same resources described above. We are currently operating above our long-term targeted leverage ratio and expect to reduce our leverage ratio over time through business growth and effective capital allocation strategies.

Inflation

Certain of our expenses, such as wages and benefits, insurance, occupancy costs and equipment repair and replacement, are subject to normal inflationary pressures. Although to date we have been able to offset inflationary cost increases with increased operating efficiencies, the negotiation of favorable long-term real estate leases and an ability to increase prices in our customer contracts (many of which contain provisions for inflationary price escalators), we can give no assurance that we will be able to offset any future inflationary cost increases through similar efficiencies, leases or increased storage rental or service charges.

Sale of Facilities

In April 2019, we completed the sale of two owned facilities in the United Kingdom for total proceeds of approximately $43.0 million.

Item 4. Controls and Procedures

Disclosure Controls and Procedures

The term "disclosure controls and procedures" is defined in Rules 13a-15(e) and 15d-15(e) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). These rules refer to the controls and other procedures of a company that are designed to ensure that information is recorded, processed, accumulated, summarized, communicated and reported to management, including its principal executive and principal financial officers, as appropriate to allow timely decisions regarding what is required to be disclosed by a company in the reports that it files under the Exchange Act. As of March 31, 2019 (the "Evaluation Date"), we carried out an evaluation, under the supervision and with the participation of our management, including our chief executive officer and chief financial officer, of the effectiveness of our disclosure controls and procedures. Based upon that evaluation, our chief executive officer and chief financial officer concluded that, as of the Evaluation Date, our disclosure controls and procedures are effective.

Changes in Internal Control over Financial Reporting

Our management, with the participation of our principal executive officer and principal financial officer, is responsible for establishing and maintaining adequate internal control over financial reporting as defined in Rules 13a-15(f) and 15d-15(f) of the Exchange Act. Our internal control system is designed to provide reasonable assurance to our management and board of directors regarding the preparation and fair presentation of published financial statements.

During the quarter ended March 31, 2019, we adopted ASU 2016-02 effective January 1, 2019. In connection with the adoption of ASU 2016-02, we implemented a new lease accounting system and also redesigned certain processes and controls pertaining to our lease portfolio. There were no other changes in our internal control over financial reporting during the quarter ended March 31, 2019 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 2. Unregistered Sales of Equity Securities and Use of Proceeds

We did not sell any unregistered equity securities during the three months ended March 31, 2019, nor did we repurchase any shares of our common stock during the three months ended March 31, 2019.

Item 6. Exhibits

(a)    Exhibits

Certain exhibits indicated below are incorporated by reference to documents we have filed with the SEC.

Exhibit No.	Description
10.1	Form of Performance Unit Agreement pursuant to the Iron Mountain Incorporated 2014 Stock and Cash Incentive Plan (version 4).(Filed herewith.)
10.2	Form of Restricted Stock Unit Agreement pursuant to the Iron Mountain Incorporated 2014 Stock and Cash Incentive Plan (version 3).(Filed herewith.)
10.3	Form of Stock Option Agreement pursuant to the Iron Mountain Incorporated 2014 Stock and Cash Incentive Plan (version 3).(Filed herewith.)
31.1	Rule 13a-14(a) Certification of Chief Executive Officer.(Filed herewith.)
31.2	Rule 13a-14(a) Certification of Chief Financial Officer.(Filed herewith.)
32.1	Section 1350 Certification of Chief Executive Officer.(Furnished herewith.)
32.2	Section 1350 Certification of Chief Financial Officer.(Furnished herewith.)
101.1	The following materials from Iron Mountain Incorporated's Quarterly Report on Form 10-Q for the quarter ended March 31, 2019, formatted in XBRL (eXtensible Business Reporting Language): (i) the Condensed Consolidated Balance Sheets, (ii) Condensed Consolidated Statements of Operations, (iii) Condensed Consolidated Statements of Comprehensive Income (Loss), (iv) Condensed Consolidated Statements of Equity, (v) Condensed Consolidated Statements of Cash Flows and (vi) Notes to Condensed Consolidated Financial Statements, tagged as blocks of text and in detail. (Filed herewith.)

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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.

IRON MOUNTAIN INCORPORATED
By:	/s/ DANIEL BORGES
	Daniel Borges  SeniorVice President, Chief Accounting Officer

Dated: April 25, 2019

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EX-10.1

Exhibit 10.1

IRON MOUNTAIN INCORPORATED

Iron Mountain Incorporated 2014 Stock and Cash Incentive Plan

Performance Unit Agreement (Version 4)

This Performance Unit Agreement and the associated grant award information (the “Customizing Information”), which Customizing Information is provided in written form or is available in electronic form from the recordkeeper for the Iron Mountain Incorporated 2014 Stock and Cash Incentive Plan, as amended and in effect from time to time (the “Plan”), is made as of the date shown as the “Grant Date” in the Customizing Information (the “Grant Date”) by and between Iron Mountain Incorporated, a Delaware corporation (the “Company”), and the individual identified in the Customizing Information (the “Recipient”). This instrument and the Customizing Information are collectively referred to as the “Performance Unit Agreement.”

WITNESSETH THAT:

WHEREAS, the Company has instituted the Plan; and

WHEREAS, the Compensation Committee (the “Committee”) has authorized the grant of performance units with respect to the Company’s Common Stock (“Stock”) upon the terms and conditions set forth below and pursuant to the Plan, a copy of which is incorporated herein; and

WHEREAS, the Recipient acknowledges that he or she has carefully read this Performance Unit Agreement and agrees, as provided in Section 19(a) below, that the terms and conditions of the Performance Unit Agreement reflect the entire understanding between himself or herself and the Company regarding this performance unit award (and the Recipient has not relied upon any statement or promise other than the terms and conditions of the Performance Unit Agreement with respect to this performance unit award);

NOW, THEREFORE, in consideration of the premises and the mutual covenants and agreements herein contained and for other good and valuable consideration the receipt and adequacy of which are hereby acknowledged, the Company and the Recipient agree as follows.

1. Grant. Subject to the terms of the Plan and this Performance Unit Agreement, the Company hereby conditionally grants to the Recipient that number of performance units equal to the corresponding number of shares of the Company’s Stock (the “Underlying Shares”) shown in the Customizing Information under “Performance Units Granted.”

The grant described in the preceding paragraph is contingent upon the satisfaction of the “Performance Criteria” over the “Performance Period,” each as shown in the Customizing Information. The Committee shall determine whether such Performance Criteria have been satisfied.

2.     Adjustment to Award. The number of Performance Units Granted may be increased or decreased, including to zero, based on the “Performance Matrix” shown in the Customizing Information. Whether any adjustment based on the Performance Matrix is made shall be determined in the sole discretion of the Committee and the “Adjusted Performance Units Granted” (“PUs”) in the Customizing Information shall be updated to reflect any such adjustment.

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3.     Vesting.

(a)    In General. If the Recipient remains in an employment, contractual or other service relationship with the Company (“Relationship”) as of the “Vesting Date” specified in the Customizing Information, and the Recipient as of such date is not in violation of any confidentiality, inventions, non-solicitation and/or non-competition agreement with the Company, the PUs shall vest on such date, based on achievement of the Performance Criteria over the Performance Period. For the avoidance of doubt, except as otherwise provided pursuant to the terms of the Plan and Sections 3(b), 3(c) or 3(d), if applicable, if the Recipient’s Relationship with the Company is terminated by the Company or by the Recipient for any reason, whether voluntarily or involuntarily, no PUs granted pursuant to this Performance Unit Agreement shall vest under any circumstances on and after the date of such termination.

(b)    Retirement Vesting. Notwithstanding Section 3(a), if the Recipient’s Relationship with the Company terminates on account of Retirement (as defined below) on or after the first July 1 following the Grant Date, the PUs shall remain outstanding and continue to vest based on achievement of the Performance Criteria over the Performance Period, provided the Recipient continues to comply with any confidentiality, inventions, non-solicitation and/or non-competition agreement with the Company.

Any PUs that vest as a result of this Section 3(b) shall be delivered as of the Vesting Date as described in Section 5, provided that no PUs shall be delivered if the Recipient as of the date of delivery is in violation of any confidentiality, inventions, non-solicitation and/or non-competition agreement with the Company. For purposes of this Section 3(b), “Retirement” means a termination of the Recipient’s Relationship with the Company after the Recipient has attained age fifty-eight (58) and has a combined age and Years of Credited Service of at least seventy (70). “Years of Credited Service” shall mean the Recipient’s years of total adjusted service with the Company, calculated from the Recipient’s initial hire date with the Company (or any predecessor business acquired by the Company) and without regard to any lapses in active employment while employed by the Company, such as approved leaves of absences.

(c)    Death or Disability Vesting. Notwithstanding Section 3(a), if the Recipient’s Relationship with the Company terminates as a result of his or her disability (as determined by the Board on the basis of medical advice satisfactory to it) or death, the Recipient shall become vested in his or her Performance Units Granted in accordance with the following schedule:

Date Relationship Terminates            Vesting Percentage

On or after first (1st) anniversary of Grant Date        33.3%

On or after second (2nd) anniversary of Grant Date        66.6%

On or after third (3rd) anniversary of Grant Date        100%

No Performance Units Granted that vest as a result of this Section 3(c) shall be delivered if the Recipient as of the date of delivery is in violation of any confidentiality, inventions, non-solicitation and/or non-competition agreement with the Company. For the avoidance of doubt, the Performance Criteria shall be treated as satisfied (or satisfied at target, if applicable) and no adjustment shall be made pursuant to Section 2.

(d)    Committee Discretion. In the event the Relationship is terminated for any reason and except as otherwise provided in Section 3(b) or 3(c), as applicable, (i) the Recipient’s right to vest in any PUs will, except as provided in Section 9(c) of the Plan, terminate as of the date of the termination of the Relationship (and will not be extended by any notice period mandated under local law) and (ii) the Committee shall have the exclusive discretion to determine when the Relationship has terminated for purposes of this PU (including when the Recipient is no longer considered to be providing active service while on a leave of absence).

(e)    Special Definition of Company. For purposes of this Section 3, the term “Company” refers to the Company as defined in the last sentence of Section 1 of the Plan.

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4.     Dividend Equivalents. A Recipient shall be credited with dividend equivalents equal to the dividends the Recipient would have received if the Recipient had been the actual record owner of the Underlying Shares on each dividend record date on or after the Grant Date and through the date the Recipient receives a settlement pursuant to Section 5 below (the “Dividend Equivalent”). If a dividend on the Stock is payable wholly or partially in Stock, the Dividend Equivalent representing that portion shall be in the form of additional PUs, credited on a one-for-one basis. If a dividend on the Stock is payable wholly or partially in cash, the Dividend Equivalent representing that portion shall also be in the form of cash and a Recipient shall be treated as being credited with any cash dividends, without earnings, until settlement pursuant to Section 5 below. If a dividend on Stock is payable wholly or partially in other than cash or Stock, the Committee may, in its discretion, provide for such Dividend Equivalents with respect to that portion as it deems appropriate under the circumstances. Dividend Equivalents shall be subject to the same terms and conditions as the PUs originally awarded pursuant to this Performance Unit Agreement, and they shall vest (or, if applicable, be forfeited) as if they had been granted at the same time as the original PU. Dividend Equivalents representing the cash portion of a dividend on Stock shall be settled in cash.

5.     Delivery of Underlying Shares or Cash Settlement.

(a)     With respect to any PUs that become vested pursuant to Section 3 (other than Section 3(c)), the Company shall issue and deliver to the Recipient (i) the number of Underlying Shares equal to the number of vested PUs or an amount of cash equal to the Fair Market Value, as defined in the Plan, of such Underlying Shares as of the Vesting Date and (ii) the amount (and in the form) due with respect to the Dividend Equivalents applicable to such Underlying Shares. Delivery shall be made to the Recipient as soon as practicable following the Vesting Date but in no event later than the end of the year in which such Vesting Date occurs (or the fifteenth (15^th) day of the third (3^rd) month following the Vesting Date, if later).

(b)     With respect to any Performance Units Granted that become vested pursuant to Section 3(c), the Company shall issue and deliver to the Recipient (i) the number of Underlying Shares equal to the number of vested Performance Units Granted or an amount of cash equal to the Fair Market Value, as defined in the Plan, of such Underlying Shares as of the date of disability or death and (ii) the amount (and in the form) due with respect to the Dividend Equivalents applicable to such Underlying Shares. Delivery shall be made to the Recipient as soon as practicable following the date of disability or death but in no event later than the end of the year in which disability or death occurs (or the fifteenth (15^th) day of the third (3^rd) month following the date of disability or death, if later).

(c)     Whether Underlying Shares, or the cash value thereof, shall be issued or paid at settlement shall be determined based on the “Form of Settlement” specified in the Customizing Information.

(d)     Any shares issued pursuant to this Performance Unit Agreement shall be issued, without issue or transfer tax, by (i) delivering a stock certificate or certificates for such shares out of theretofore authorized but unissued shares or treasury shares of its Stock as the Company may elect or (ii) issuance of shares of its Stock in book entry form; provided, however, that the time of such delivery may be postponed by the Company for such period as may be required for it with reasonable diligence to comply with any applicable requirements of law.

(e)     Notwithstanding the preceding provisions of this Section 5, delivery of Underlying Shares shall be made, or the amount of cash equivalent thereto shall be paid, only if the required purchase price designated as the “Purchase Price” shown in the Customizing Information per unit/share is paid to the Company by means of payment acceptable to the Company in accordance with the terms of the Plan. If the Recipient fails to pay for or accept delivery of all of the shares, the right to shares of Stock provided pursuant to this Agreement Performance Unit Agreement may be terminated by the Company.

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6.     Withholding Taxes. The Recipient hereby agrees, as a condition of this award, to provide to the Company (or a subsidiary employing the Recipient, as applicable) an amount sufficient to satisfy the Company’s and/or subsidiary’s obligation to withhold any and all federal, state, local or provincial income tax, social security, social insurance, payroll tax, fringe benefits tax, payment on account or other tax-related items or statutory withholdings related to the Plan (the ”Withholding Amount”), if any, by (a) authorizing the Company and/or any subsidiary employing the Recipient, as applicable, to withhold the Withholding Amount from the Recipient’s cash compensation or (b) remitting the Withholding Amount to the Company (or a subsidiary employing the Recipient, as applicable) in cash; provided, however, that to the extent that the Withholding Amount is not provided by one or a combination of such methods, the Company may at its election withhold from the Underlying Shares and Dividend Equivalents that would otherwise be delivered that number of shares (and/or cash) having a Fair Market Value on the date of vesting sufficient to eliminate any deficiency in the Withholding Amount. Regardless of any action that the Company and/or subsidiary takes with respect to any or all federal, state, local or provincial income tax, social security, social insurance, payroll tax, fringe benefits tax, payment on account or other tax-related items or statutory withholdings related to the Recipient’s participation in the Plan, the Recipient acknowledges that he or she, and not the Company and/or any subsidiary, has the ultimate liability for any such items. Further, if the Recipient becomes subject to tax in more than one jurisdiction between the Grant Date and the date of any relevant taxable or tax withholding event, the Recipient acknowledges that the Company and/or subsidiary may be required to withhold or account for such tax-related items in more than one jurisdiction.

7.     Non-assignability of PUs and Dividend Equivalents. PUs and Dividend Equivalents shall not be assignable or transferable by the Recipient except by will or by the laws of descent and distribution or as permitted by the Committee in its discretion pursuant to the terms of the Plan. During the life of the Recipient, delivery of shares of Stock or payment of cash as settlement of PUs and Dividend Equivalents shall be made only to the Recipient, to a conservator or guardian duly appointed for the Recipient by reason of the Recipient’s incapacity or to the person appointed by the Recipient in a durable power of attorney acceptable to the Company’s counsel.

8.     Compliance with Securities Act; Lock-Up Agreement. The Company shall not be obligated to sell or issue any Underlying Shares or other securities in settlement of PUs and Dividend Equivalents hereunder unless the shares of Stock or other securities are at that time effectively registered or exempt from registration under the Securities Act and applicable state or provincial securities laws. In the event shares or other securities shall be issued that shall not be so registered, the Recipient hereby represents, warrants and agrees that the Recipient will receive such shares or other securities for investment and not with a view to their resale or distribution, and will execute an appropriate investment letter satisfactory to the Company and its counsel. The Recipient further hereby agrees that as a condition to the settlement of PUs and Dividend Equivalents, the Recipient will execute an agreement in a form acceptable to the Company to the effect that the shares shall be subject to any underwriter’s lock-up agreement in connection with a public offering of any securities of the Company that may from time to time apply to shares held by officers and employees of the Company, and such agreement or a successor agreement must be in full force and effect.

9.     Legends. The Recipient hereby acknowledges that the stock certificate or certificates (or entries in the case of book entry form) evidencing shares of Stock or other securities issued pursuant to any settlement of an PU or Dividend Equivalent hereunder may bear a legend (or provide a restriction) setting forth the restrictions on their transferability described in Section 8 hereof, if such restrictions are then in effect.

10.     Rights as Stockholder. The Recipient shall have no rights as a stockholder with respect to any PUs, Dividend Equivalents or Underlying Shares until the date of issuance of a stock certificate (or appropriate entry is made in the case of book entry form) for Underlying Shares and any Dividend Equivalents. Except as provided by Section 4, no adjustment shall be made for any rights for which the record date is prior to the date such stock certificate is issued (or appropriate entry is made in the case of book entry form), except to the extent the Committee so provides, pursuant to the terms of the Plan and upon such terms and conditions it may establish.

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11.     Effect Upon Employment and Performance of Services. Nothing in this Performance Unit Agreement or the Plan shall be construed to impose any obligation upon the Company or any subsidiary to employ or utilize the services of the Recipient or to retain the Recipient in its employ or to engage or retain the services of the Recipient.

12.     Time for Acceptance. Unless the Recipient shall evidence acceptance of this Performance Unit Agreement by electronic or other means prescribed by the Committee within sixty (60) days after its delivery, the PUs and Dividend Equivalents shall be null and void (unless waived by the Committee).

13.     Right of Repayment. In the event that the Recipient breaches any confidentiality, inventions, non-solicitation and/or non-competition agreement with the Company, the Recipient shall pay to the Company an amount equal to the excess of the Fair Market Value of the Underlying Shares as of the date of settlement (whether settled in cash or Stock) over the Purchase Price, if any, paid (or deemed paid) together with the value of any Dividend Equivalents; provided, however, that the Committee in its discretion may release the Recipient from the requirement to make such payment, if the Committee determines that the Recipient’s breach of such agreement is not inimical to the best interests of the Company. In accordance with applicable law, the Company may deduct the amount of payment due under the preceding sentence from any compensation or other amount payable by the Company to the Recipient. For purposes of this Section 13, the term “Company” refers to the Company as defined in the last sentence of Section 1 of the Plan.

14.     Section 409A of the Internal Revenue Code. The PUs and Dividend Equivalents granted hereunder are intended to avoid the potential adverse tax consequences to the Recipient of Section 409A of the Code, and the Committee may make such modifications to this Performance Unit Agreement as it deems necessary or advisable to avoid such adverse tax consequences. If and to the extent that the PUs and Dividend Equivalents are subject to Section 409A, in addition to the provisions of Section 12(f) of the Plan, any payment upon termination of the Relationship shall be made only upon a “separation from service” under Section 409A, and the Recipient may not directly or indirectly designate the calendar year of a payment.

15.     Electronic Delivery. The Company may, in its sole discretion, decide to deliver any documents related to current or future participation in the Plan by electronic means. The Recipient consents to receive such documents by electronic delivery and agrees to participate in the Plan through an on-line or electronic system established and maintained by the Company or a third party designated by the Company.

16.     Company Policies. The PUs and Dividend Equivalents granted hereunder shall be subject to any applicable clawback or recoupment policies, share trading policies, and other policies that may be implemented by the Board from time to time, in accordance with applicable law.

17.     Nature of Award. By accepting this PU, the Recipient acknowledges, understands and agrees that:

(a)    the Plan is established voluntarily by the Company, is discretionary in nature and may be modified, amended, suspended or terminated by the Company at any time, to the extent permitted by the Plan and this Performance Unit Agreement;

(b)    the grant of this PU is voluntary and occasional and does not create any contractual or other right to receive future awards under the Plan or benefits in lieu of Plan awards, even if PUs or other Plan awards have been granted in the past;

(c)    all decisions with respect to future PU awards will be at the sole discretion of the Committee;

(d)    he or she is voluntarily participating in the Plan;

(e)    the future value of the Underlying Shares is unknown and cannot be predicted with certainty;

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(f)    if the Recipient resides and/or works outside the United States, the following additional provisions shall apply:

(i)    this PU, including any Dividend Equivalents, and the Underlying Shares are not intended to replace any pension rights or compensation;

(ii)    this PU, including any Dividend Equivalents, and the Underlying Shares (including value attributable to each) do not constitute compensation of any kind for services of any kind rendered to the Company and/or any subsidiary thereof and are outside the scope of the Recipient’s employment contract, if any;

(iii)    this PU, including any Dividend Equivalents, and any Underlying Shares (including the value attributable to each) are not part of normal or expected compensation or salary, including, but not limited to, for purposes of calculating any severance, resignation, termination, redundancy, dismissal, end-of-service payments, bonuses, service awards, pension or retirement or welfare benefits or similar payments unless such other arrangement explicitly provides to the contrary;

(iv)    no claim or entitlement to compensation or damages shall arise from forfeiture of the PU, including any Dividend Equivalents, resulting from the Recipient’s termination of the Relationship for any reason, and in consideration of this PU, including any Dividend Equivalents, the Recipient irrevocably agrees never to institute a claim against the Company and/or subsidiary, waives his or her ability to bring such claim and releases the Company and/or subsidiary from any claim; if, notwithstanding the foregoing, such claim is allowed by a court of competent jurisdiction, then by accepting this PU, including any Dividend Equivalents, the Recipient is deemed irrevocably to have agreed not to pursue such claim and agrees to execute any and all documents necessary to request dismissal or withdrawal of such claims; and

(g)    the Company shall not be liable for any foreign exchange rate fluctuation between the Recipient’s local currency and the United States dollar that may affect the value of this PU or any amounts due pursuant to the settlement of the PU or the subsequent sale of any Underlying Shares acquired upon settlement.

18.     Appendix. Notwithstanding any provision in this Performance Unit Agreement, this PU shall be subject to any special terms and conditions set forth in any Appendix to this Performance Unit Agreement for the Recipient’s country of residence or in which the Recipient works. Moreover, if the Recipient relocates to one of the countries included in the Appendix, the special terms and conditions for such country will apply to the Recipient, to the extent the Company determines that the application of such terms and conditions is necessary or advisable in order to comply with local law or facilitate the administration of the Plan. The Appendix constitutes part of this Performance Unit Agreement.

19.     General Provisions.

(a)     Amendment; Waivers. This Performance Unit Agreement, including the Plan, contains the full and complete understanding and agreement of the parties hereto as to the subject matter hereof, and except as otherwise permitted by the express terms of the Plan and this Performance Unit Agreement and applicable law, it may not be modified or amended nor may any provision hereof be waived without a further written agreement duly signed by each of the parties; provided, however, that a modification or amendment that does not materially diminish the rights of the Recipient hereunder, as they may exist immediately before the effective date of the modification or amendment, shall be effective upon written notice of its provisions to the Recipient, to the extent permitted by applicable law. The waiver by either of the parties hereto of any provision hereof in any instance shall not operate as a waiver of any other provision hereof or in any other instance. The Recipient shall have the right to receive, upon request, a written confirmation from the Company of the Customizing Information.

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(b)     Binding Effect. This Performance Unit Agreement shall inure to the benefit of and be binding upon the parties hereto and their respective heirs, executors, administrators, representatives, successors and assigns.

(c)     Fractional PUs, Underlying Shares and Dividend Equivalents. All fractional Underlying Shares and Dividend Equivalents settled in Stock resulting from the application of the Performance Matrix or the adjustment provisions contained in the Plan shall be rounded down to the nearest whole share. If cash in lieu of Underlying Shares is delivered at settlement, or Dividend Equivalents are settled in cash, the amount paid shall be rounded down to the nearest penny.

(d)     Governing Law. This Performance Unit Agreement shall be governed by and construed in accordance with the laws of the Commonwealth of Massachusetts, without regard to the principles of conflicts of law.

(e)     Construction. This Performance Unit Agreement is to be construed in accordance with the terms of the Plan. In case of any conflict between the Plan and this Performance Unit Agreement, the Plan shall control. The titles of the sections of this Performance Unit Agreement and of the Plan are included for convenience only and shall not be construed as modifying or affecting their provisions. The masculine gender shall include both sexes; the singular shall include the plural and the plural the singular unless the context otherwise requires. Capitalized terms not defined herein shall have the meanings given to them in the Plan.

(f)     Language. If the Recipient receives this Performance Unit Agreement, or any other document related to this PU and/or the Plan translated into a language other than English and if the meaning of the translated version is different than the English version, the English version will control.

(g)     Data Privacy.

(i)    The Recipient hereby explicitly and unambiguously consents to the collection, use and transfer, in electronic or other form, of the Recipient’s personal data as described in this Performance Unit Agreement by and among, as applicable, his or her employer, the Company and its subsidiaries for the exclusive purpose of implementing, administering and managing the Recipient’s participation in the Plan.

(ii)    The Recipient understands that his or her employer, the Company and its subsidiaries, as applicable, hold certain personal information about the Recipient regarding his or her employment, the nature and amount of the Recipient’s compensation and the fact and conditions of the Recipient’s participation in the Plan, including, but not limited to, the Recipient’s name, home address, telephone number and e-mail address, date of birth, social insurance number or other identification number, salary, nationality, job title, any shares of stock or directorships held in the Company and its subsidiaries, details of all options, awards or any other entitlement to shares of stock awarded, canceled, exercised, vested, unvested or outstanding in the Recipient’s favor, for the purpose of implementing, administering and managing the Plan (the “Data”).

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(iii)    The Recipient understands that the Data may be transferred to any third parties assisting in the implementation, administration and management of the Plan, that these third parties may be located in the Recipient’s country, or elsewhere, and that the third party’s country may have different data privacy laws and protections than the Recipient’s country. The Recipient understands that the Recipient may request a list with the names and addresses of any potential recipients of the Data by contacting his or her local human resources representative. The Recipient authorizes the recipients to receive, possess, use, retain and transfer the Data, in electronic or other form, for the purposes of implementing, administering and managing the Recipient’s participation in the Plan, including any requisite transfer of such Data as may be required to a broker or other third party. The Recipient understands that the Data will be held only as long as is necessary to implement, administer and manage Recipient’s participation in the Plan. The Recipient understands that he or she may, at any time, view the Data, request additional information about the storage and processing of the Data, require any necessary amendments to the Data or refuse or withdraw the consents herein, in any case without cost, by contacting in writing the Recipient’s local human resources representative. The Recipient understands, however, that refusing or withdrawing his or her consent may affect the Recipient’s ability to participate in the Plan. For more information on the consequences of refusal to consent or withdrawal of consent, the Recipient understands that the Recipient may contact his or her local human resources representative.

(h)     Notices. Any notice in connection with this Performance Unit Agreement shall be deemed to have been properly delivered if it is delivered in the form specified by the Committee as follows:

To the Recipient:    Last address provided to the Company

To the Company:    Iron Mountain Incorporated

One Federal Street

Boston, Massachusetts 02110

Attn: Chief Financial Officer

(i)     Version Number. This document is Version 4 of the Iron Mountain Incorporated 2014 Stock and Cash Incentive Plan Performance Unit Agreement.

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IRON MOUNTAIN INCORPORATED

Iron Mountain Incorporated 2014 Stock and Cash Incentive Plan

Performance Unit Agreement (Version 4)

Appendix
Country-Specific Provisions

Terms and Conditions

This Appendix includes additional, or if so indicated replaces, certain terms and conditions that govern a PU granted under the Plan if a Recipient resides or works in one of the countries listed below. Capitalized terms used but not defined in this Appendix have the meanings set forth in the Plan and/or the Performance Unit Agreement.

Notifications

The information contained herein is general in nature and may not apply to each particular Recipient’s situation and the Company is not in a position to assure a Recipient of any particular result. Accordingly, the Recipient is advised to seek appropriate professional advice as to how the relevant laws in a particular country may apply to his or her situation.

If the Recipient is a citizen or resident of a country other than the one in which the Recipient is currently working, transfers employment or service location after the Grant Date, or is considered a resident of another country for local law purposes, the information contained herein may not apply to the Recipient, and the Company shall, in its discretion, determine to what extent the terms and conditions contained herein shall apply.

Australia

Vesting. This provision replaces Section 3(b) of the Performance Unit Agreement:

Notwithstanding Section 3(a), if the Recipient terminates employment on or after Retirement, the Recipient shall become fully vested in his or her PUs; provided, however, that Retirement occurs on or after the first July 1 following the Grant Date.

In the event a Recipient becomes fully vested under this Section 3(b), in no event shall any PUs vested as a result of this Section 3(b) be delivered until the Vesting Date, nor shall any PUs vested as a result of this Section 3(b) be delivered if the Recipient as of the date of delivery is in violation of any confidentiality, inventions and/or non-competition agreement with the Company. For purposes of this Section 3(b), a Recipient shall be treated as having terminated from employment due to “Retirement” if he or she has completed twelve (12) years of total adjusted service, calculated using Recipient’s original hire date (including with any predecessor business acquired by the Company but without regard to any lapses of employment), and if he or she intends to permanently cease gainful employment in circumstances where he or she provides in good faith, a written declaration to that effect, and the Committee in its sole and absolute discretion accepts that statutory declaration.

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Canada    

PUs Payable Only in Shares. Notwithstanding any discretion in the Plan or anything to the contrary in this Performance Unit Agreement, the grant of the PUs does not provide the Recipient any right to receive a cash payment and the PUs may be settled only in shares of Company Stock.

Belgium

Time for Acceptance. This provision replaces Section 12 of the Performance Unit Agreement:

Unless the Recipient shall evidence written acceptance of this Performance Unit Agreement by electronic or other means prescribed by the Committee within sixty (60) days after its delivery, the PUs and Dividend Equivalents shall be null and void (unless waived by the Committee).

Hungary

Grant. Any shares acquired under the Plan are deemed as privately placed under Act No. CXX of 2011 on the Capital Market.

The Netherlands

Effect Upon Employment and Performance of Services. This provision supplements Section 11 of the Performance Unit Agreement:

PUs and Dividend Equivalents shall not form part of the employment or services conditions of the Recipient, nor shall they be treated (either at the time when it might apply or in any period prior thereto or any period thereafter) as remuneration for the purpose of pension arrangements nor shall they form any other employment or services related entitlement. PUs and Dividend Equivalents shall not be included in the calculation of a possible severance payment and the Recipient waives all rights (if any) that he or she may have in this regard.

Poland

Right of Repayment. The right of repayment provided in Section 13 of this Performance Unit Agreement shall be subject to concluding a non-competition agreement, according to the relevant provisions of Polish law.

Governing Law. This provision supplements Section 18(d) of the Performance Unit Agreement:

Any disputes resulting from this Performance Unit Agreement shall be settled exclusively by United States federal courts in the Commonwealth of Massachusetts.

Language. This provision replaces Section 18(f) of the Performance Unit Agreement:

This Performance Unit Agreement was executed in two (2) identical counterparts, each in Polish and English versions, and one for each of the Company and the Recipient. In the case of any discrepancy between the Polish and English version, the Polish version will prevail.

United Kingdom

PUs Payable Only in Shares. Notwithstanding any discretion in the Plan or anything to the contrary in this Performance Unit Agreement, the grant of the PUs does not provide the Recipient any right to receive a cash payment and the PUs may be settled only in shares of Company Stock.

Vesting. This provision replaces the last sentence of Section 3(b) of the Performance Unit Agreement:

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For purposes of this Section 3(b), “Retirement” means a termination of employment with the Company after the Recipient has attained age fifty-eight (58) (or such earlier age with the agreement of the Company) and has achieved at least a combined age and years of total adjusted service, calculated using Recipient’s original hire date (including with any predecessor business acquired by the Company but without regard to any lapses of employment), of at least seventy (70) (or such other sum as shall be derived by adding age fifty-eight (58) (or such earlier age with the agreement of the Company) to a shorter period of total adjusted service as the Committee may, in its absolute discretion, permit for these purposes).

Withholding Taxes. This provision replaces the first sentence of Section 6 of the Performance Unit Agreement:

If a liability arises in connection with the award, holding, vesting or settlement of PUs and/or Dividend Equivalents under which the Company or any subsidiary employing the Recipient is obliged to account for the tax and/or primary social security contributions (otherwise known as employee’s National Insurance Contributions) (“Employee Tax Liability”), then:

(a) If the Dividend Equivalent is cash settled, the Company or the relevant subsidiary may withhold the Employee Tax Liability from the sum of cash due to the Recipient; or

(b) If the PU and/or Dividend Equivalent is Stock settled, then unless the Recipient makes a payment of an amount equal to the Employee Tax Liability within seven (7) days of being notified by his or her employer or the Company of the amount of the Employee Tax Liability, the Company may withhold sufficient of the shares of Company Stock that would otherwise be delivered upon the settlement of the PU and/or Dividend Equivalent and arrange payment to the subsidiary on which the Employee Tax Liability falls of an amount equal to the Employee Tax Liability. If shares are withheld to cover the obligation for the Employee Tax Liability, then for tax purposes, the Recipient shall be deemed to have been issued the full number of shares of Company Stock with respect to the vested PUs notwithstanding that a number of shares are held back for purposes of paying the Employee Tax Liability.

Effect Upon Employment and Performance of Services. This provision supplements Section 11 of the Performance Unit Agreement:

The Recipient shall have no entitlement to compensation or damages in consequence of the termination of his or her employment with the Company or any employing subsidiary for any reason whatsoever and whether or not in breach of contract, in so far as such entitlement arises or may arise from his or her ceasing to have rights under the PU as a result of such termination or from the loss or diminution in value of the same and, upon grant, the Recipient shall be deemed irrevocably to have waived such entitlement.

Any EU Country

Data Privacy. This provision replaces Section 19(g) of the Performance Unit Agreement in its entirety:

a. The Recipient hereby acknowledges and understands that the Recipient’s personal data is collected, retained, used, processed, disclosed and transferred, in electronic or other form, as described in this Performance Unit Agreement by and among, as applicable, the Recipient’s employer, the Company and its subsidiaries, and third parties assisting in the implementation, administration and management of the Plan for the exclusive purpose of implementing, administering and managing the Recipient’s participation in the Plan.

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b. The Recipient understands that the Company and its subsidiaries (including his or her employer), as applicable, hold certain personal information about him or her regarding the Recipient’s employment, the nature and amount of the Recipient’s compensation and the fact and conditions of the Recipient’s participation in the Plan, including, but not limited to, his or her name, home address, telephone number and e-mail address, date of birth, social insurance number or other identification number, salary, nationality, job title, any equity or directorships held in the Company and details of all options or any other entitlement to equity awarded, canceled, exercised, vested, unvested or outstanding in his or her favor, in connection with the implementation, management and administration of the Plan (the “Data”).

c. The Recipient understands that the Data may be transferred to the Company, its subsidiaries and any third parties assisting in the implementation, administration and management of the Plan, that these entities or persons may be located in the Recipient’s country, or elsewhere, and that such entity or person’s country may have a different or lower standard of data privacy rights and protections than Recipient’s country. The Recipient understands that he or she may request a list with the names and addresses of any entities or persons that receive the Data by contacting the Recipient’s local human resources representative. The Recipient understands that the entities or persons receive, possess, use, retain and transfer the Data, in electronic or other form, for the purposes of implementing, administering and managing his or her participation in the Plan, including transfers of such Data to a broker or other third party. The Recipient understands that the Data will be held only as long as is necessary to implement, administer and manage his or her participation in the Plan in accordance with applicable law. The Recipient understands that he or she may, at any time, request to access or be provided the Data, request additional information about the storage and processing of the Data, require any corrections or amendments to the Data in any case without cost and to the extent permitted by law, by contacting in writing his or her local human resources representative. The Recipient understands, however, that objecting to the processing of his or her Data may affect the Recipient’s ability to participate in the Plan.

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IRON MOUNTAIN INCORPORATED

Iron Mountain Incorporated 2014 Stock and Cash Incentive Plan

Performance Unit Schedule

Participant Name

Employee

In accordance with the Performance Unit Agreement, of which this Performance Unit Schedule is a part (which together, constitute the “Customizing Information”), the Company hereby grants to Participant Name (the “Recipient”) the following Performance Units:

Grant Date:                Grant Date

Grant Type:                Grant Type

Grant Price:                Grant Price

Number of Units Granted:        Number of shares granted

Performance Period:            1/1/2019 – 12/31/2021

Vesting Date:                2/20/2022 (subject to performance)        

Form of Settlement:            Stock

ACCEPTANCE BY RECIPIENT

IN WITNESS WHEREOF, the Company has caused this Performance Unit Agreement to be issued as of the date set forth above.

Date: ______________________            ____________________________________

(Signature of Recipient)

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EX-10.2

Exhibit 10.2

IRON MOUNTAIN INCORPORATED

Iron Mountain Incorporated 2014 Stock and Cash Incentive Plan

Restricted Stock Unit Agreement (Version 3)

This Restricted Stock Unit Agreement and the associated grant award information (the “Customizing Information”), which Customizing Information is provided in written form or is available in electronic form from the recordkeeper for the Iron Mountain Incorporated 2014 Stock and Cash Incentive Plan, as amended and in effect from time to time (the “Plan”), is made as of the date shown as the “Grant Date” in the Customizing Information (the “Grant Date”) by and between Iron Mountain Incorporated, a Delaware corporation (the “Company”), and the individual identified in the Customizing Information (the “Recipient”). This instrument and the Customizing Information are collectively referred to as the “Restricted Stock Unit Agreement.”

WITNESSETH THAT:

WHEREAS, the Company has instituted the Plan; and

WHEREAS, the Compensation Committee (the “Committee”) has authorized the grant of restricted stock units with respect to the Company’s Common Stock (“Stock”) upon the terms and conditions set forth below and pursuant to the Plan, a copy of which is incorporated herein; and

WHEREAS, the Recipient acknowledges that he or she has carefully read this Restricted Stock Unit Agreement and agrees, as provided in Section 18(a) below, that the terms and conditions of the Restricted Stock Unit Agreement reflect the entire understanding between himself or herself and the Company regarding this restricted stock unit award (and the Recipient has not relied upon any statement or promise other than the terms and conditions of the Restricted Stock Unit Agreement with respect to this restricted stock unit award);

NOW, THEREFORE, in consideration of the premises and the mutual covenants and agreements herein contained and for other good and valuable consideration the receipt and adequacy of which are hereby acknowledged, the Company and the Recipient agree as follows.

1. Grant. Subject to the terms of the Plan and this Restricted Stock Unit Agreement, the Company hereby grants to the Recipient that number of restricted stock units (“RSUs”) equal to the corresponding number of shares of the Company’s Stock (the “Underlying Shares”) shown in the Customizing Information under “Restricted Stock Units Granted.”

2.     Vesting.

(a)    In General. If the Recipient remains in an employment, contractual or other service relationship with the Company (“Relationship”) as of a “Vesting Date,” as specified in the Customizing Information, and the Recipient as of such date is not in violation of any confidentiality, inventions, non-solicitation and/or non-competition agreement with the Company, all or a portion, as applicable (the “Incremental Amount,” as specified in the Customizing Information), of the RSUs shall vest on such date. For the avoidance of doubt, except as otherwise provided pursuant to the terms of the Plan and Sections 2(b), 2(c) or 2(d), if the Recipient’s Relationship with the Company is terminated by the Company or by the Recipient for any reason, whether voluntarily or involuntarily, no RSUs granted pursuant to this Restricted Stock Unit Agreement shall vest under any circumstances on and after the date of such termination.

(b)    Retirement Vesting. Notwithstanding Section 2(a), if the Recipient’s Relationship with the Company terminates on account of Retirement (as defined below) on or after the first July following the Grant Date, the RSUs shall continue to vest on the schedule shown in the Customizing Information, provided the Recipient continues to comply with any confidentiality, inventions, non-solicitation and/or non-competition agreement with the Company.

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(c)    Death or Disability Vesting. Notwithstanding Section 2(a), if the Recipient’s Relationship with the Company terminates as a result of his or her disability (as determined by the Board on the basis of medical advice satisfactory to it) or death, the Recipient’s Vesting Date shall be the date of termination and he or she shall be fully vested in his or her RSUs, provided the Recipient is not as of the date of delivery, or was not as of the date of death, in violation of any confidentiality, inventions, non-solicitation and/or non-competition agreement with the Company.

(d)    Committee Discretion. In the event the Relationship is terminated for any reason (whether voluntary or involuntary), (i) the Recipient’s right to vest in the RSU will, except as provided in Section 9(c) of the Plan or otherwise explicitly in Sections 2(b) or 2(c) or as provided by the Committee, terminate as of the date of the termination of the Relationship (and will not be extended by any notice period mandated under local law) and (ii) the Committee shall have the exclusive discretion to determine when the Relationship has terminated for purposes of this RSU (including when the Recipient is no longer considered to be providing active service while on a leave of absence).

(e)    Special Definitions. For purposes of this Section 2, the term “Company” refers to the Company as defined in the last sentence of Section 1 of the Plan, and the term “Retirement” means termination of the Recipient’s Relationship with the Company after the Recipient has attained age fifty-eight (58) and has a combined age and Years of Credited Service of at least seventy (70). “Years of Credited Service” shall mean the Recipient’s years of total adjusted service with the Company, calculated from the Recipient’s initial hire date with the Company (or any predecessor business acquired by the Company) and without regard to any lapses in active employment while employed by the Company, such as approved leaves of absences.

3.     Dividends. A Recipient shall be credited with dividend equivalents equal to the dividends the Recipient would have received if the Recipient had been the actual record owner of the Underlying Shares on each dividend record date on or after the Grant Date and through the date the Recipient receives a settlement pursuant to Section 4 below (the “Dividend Equivalent”). If a dividend on the Stock is payable wholly or partially in Stock, the Dividend Equivalent representing that portion shall be in the form of additional RSUs, credited on a one-for-one basis. If a dividend on the Stock is payable wholly or partially in cash, the Dividend Equivalent representing that portion shall also be in the form of cash and a Recipient shall be treated as being credited with any cash dividends, without earnings, until settlement pursuant to Section 4 below. If a dividend on Stock is payable wholly or partially in other than cash or Stock, the Committee may, in its discretion, provide for such Dividend Equivalents with respect to that portion as it deems appropriate under the circumstances. Dividend Equivalents shall be subject to the same terms and conditions as the RSUs originally awarded pursuant to this Restricted Stock Unit Agreement, and they shall vest (or, if applicable, be forfeited) as if they had been granted at the same time as the original RSU. Dividend Equivalents representing the cash portion of a dividend on Stock shall be settled in cash.

4.     Delivery of Underlying Shares or Cash Settlement. With respect to any RSUs that become vested RSUs as of a Vesting Date pursuant to Section 2, the Company shall issue and deliver to the Recipient as soon as practicable following the applicable Vesting Date (a) the number of Underlying Shares equal to the number of RSUs vesting on that date or an amount of cash equal to the Fair Market Value, as defined in the Plan, of such Underlying Shares as of that date (or such later delivery date, if applicable) and (b) the amount (and in the form) due with respect to the Dividend Equivalents applicable to such Underlying Shares. Whether Underlying Shares, or the cash value thereof, shall be issued or paid at settlement shall be determined based on the “Form of Settlement” specified in the Customizing Information.

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Any shares issued pursuant to this Restricted Stock Unit Agreement shall be issued, without issue or transfer tax, by (i) delivering a stock certificate or certificates for such shares out of theretofore authorized but unissued shares or treasury shares of its Stock as the Company may elect or (ii) issuance of shares of its Stock in book entry form; provided, however, that the time of such delivery may be postponed by the Company for such period as may be required for it with reasonable diligence to comply with any applicable requirements of law. Notwithstanding the preceding provisions of this Section 4, delivery of Underlying Shares shall be made, or the amount of cash equivalent thereto shall be paid, only if the required purchase price designated as the “Purchase Price” shown in the Customizing Information per underlying RSU is paid to the Company by means of payment acceptable to the Company in accordance with the terms of the Plan. If the Recipient fails to pay for or accept delivery of all of the shares, the right to shares of Stock provided pursuant to this RSU may be terminated by the Company.

5.     Withholding Taxes. The Recipient hereby agrees, as a condition of this award, to provide to the Company (or a subsidiary employing the Recipient, as applicable) an amount sufficient to satisfy the Company’s and/or subsidiary’s obligation to withhold any and all federal, state, local or provincial income tax, social security, social insurance, payroll tax, fringe benefits tax, payment on account or other tax-related items or statutory withholdings related to the Recipient’s participation in the Plan (the “Withholding Amount”), if any, by (a) authorizing the Company and/or any subsidiary employing the Recipient, as applicable, to withhold the Withholding Amount from the Recipient’s cash compensation or (b) remitting the Withholding Amount to the Company (or a subsidiary employing the Recipient, as applicable) in cash; provided, however, that to the extent that the Withholding Amount is not provided by one or a combination of such methods, the Company may at its election withhold from the Underlying Shares and Dividend Equivalents that would otherwise be delivered that number of shares (and/or cash) having a Fair Market Value on the date of vesting sufficient to eliminate any deficiency in the Withholding Amount. Regardless of any action that the Company and/or subsidiary takes with respect to any or all federal, state, local or provincial income tax, social security, social insurance, payroll tax, fringe benefits tax, payment on account or other tax-related items or statutory withholdings related to the Recipient’s participation in the Plan, the Recipient acknowledges that he or she, and not the Company and/or any subsidiary, has the ultimate liability for any such items. Further, if the Recipient becomes subject to tax in more than one jurisdiction between the Grant Date and the date of any relevant taxable or tax withholding event, the Recipient acknowledges that the Company and/or subsidiary may be required to withhold or account for such tax-related items in more than one jurisdiction.

6.     Non-assignability of RSUs and Dividend Equivalents. RSUs and Dividend Equivalents shall not be assignable or transferable by the Recipient except by will or by the laws of descent and distribution or as permitted by the Committee in its discretion pursuant to the terms of the Plan. During the life of the Recipient, delivery of shares of Stock or payment of cash as settlement of RSUs and Dividend Equivalents shall be made only to the Recipient, to a conservator or guardian duly appointed for the Recipient by reason of the Recipient’s incapacity or to the person appointed by the Recipient in a durable power of attorney acceptable to the Company’s counsel.

7.     Compliance with Securities Act; Lock-Up Agreement. The Company shall not be obligated to sell or issue any Underlying Shares or other securities in settlement of RSUs and Dividend Equivalents hereunder unless the shares of Stock or other securities are at that time effectively registered or exempt from registration under the Securities Act and applicable state or provincial securities laws. In the event shares or other securities shall be issued that shall not be so registered, the Recipient hereby represents, warrants and agrees that the Recipient will receive such shares or other securities for investment and not with a view to their resale or distribution, and will execute an appropriate investment letter satisfactory to the Company and its counsel. The Recipient further hereby agrees that as a condition to the settlement of RSUs and Dividend Equivalents, the Recipient will execute an agreement in a form acceptable to the Company to the effect that the shares shall be subject to any underwriter’s lock-up agreement in connection with a public offering of any securities of the Company that may from time to time apply to shares held by officers and employees of the Company, and such agreement or a successor agreement must be in full force and effect.

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8.     Legends. The Recipient hereby acknowledges that the stock certificate or certificates (or entries in the case of book entry form) evidencing shares of Stock or other securities issued pursuant to any settlement of an RSU or Dividend Equivalent hereunder may bear a legend (or provide a restriction) setting forth the restrictions on their transferability described in Section 7 hereof, if such restrictions are then in effect.

9.     Rights as Stockholder. The Recipient shall have no rights as a stockholder with respect to any RSUs, Dividend Equivalents or Underlying Shares until the date of issuance of a stock certificate (or appropriate entry is made in the case of book entry form) for Underlying Shares and any Dividend Equivalents. Except as provided by Section 3, no adjustment shall be made for any rights for which the record date is prior to the date such stock certificate is issued (or appropriate entry is made in the case of book entry form), except to the extent the Committee so provides, pursuant to the terms of the Plan and upon such terms and conditions it may establish.

10.     Effect Upon Employment and Performance of Services. Nothing in this Restricted Stock Unit Agreement or the Plan shall be construed to impose any obligation upon the Company or any subsidiary to employ or utilize the services of the Recipient or to retain the Recipient in its employ or to engage or retain the services of the Recipient.

11.     Time for Acceptance. Unless the Recipient shall evidence acceptance of this Restricted Stock Unit Agreement by electronic or other means prescribed by the Committee within sixty (60) days after its delivery, the RSUs and Dividend Equivalents shall be null and void (unless waived by the Committee).

12.     Right of Repayment. In the event that the Recipient breaches any confidentiality, inventions, non-solicitation and/or non-competition agreement with the Company, the Recipient shall pay to the Company an amount equal to the excess of the Fair Market Value of the Underlying Shares as of the date of settlement (whether settled in cash or Stock) over the Purchase Price, if any, paid (or deemed paid) together with the value of any Dividend Equivalents; provided, however, that the Committee in its discretion may release the Recipient from the requirement to make such payment, if the Committee determines that the Recipient’s breach of such agreement is not inimical to the best interests of the Company. In accordance with applicable law, the Company may deduct the amount of payment due under the preceding sentence from any compensation or other amount payable by the Company to the Recipient. For purposes of this Section 12, the term “Company” refers to the Company as defined in the last sentence of Section 1 of the Plan.

13.     Section 409A of the Internal Revenue Code. The RSUs and Dividend Equivalents granted hereunder are intended to avoid the potential adverse tax consequences to the Recipient of Section 409A of the Code and the Committee may make such modifications to this Restricted Stock Unit Agreement as it deems necessary or advisable to avoid such adverse tax consequences. If and to the extent that the RSUs and Dividend Equivalents are subject to Section 409A, in addition to the provisions of Section 12(f) of the Plan, any payment upon termination of the Relationship shall be made only upon a “separation from service” under Section 409A, and the Recipient may not directly or indirectly designate the calendar year of a payment.

14.     Electronic Delivery. The Company may, in its sole discretion, decide to deliver any documents related to current or future participation in the Plan by electronic means. The Recipient consents to receive such documents by electronic delivery and agrees to participate in the Plan through an on-line or electronic system established and maintained by the Company or a third party designated by the Company.

15.     Company Policies. This RSU shall be subject to any applicable clawback or recoupment policies, share trading policies, and other policies that may be implemented by the Board from time to time, in accordance with applicable law.

16.     Nature of Award. By accepting this RSU, the Recipient acknowledges, understands and agrees that:

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(a)    the Plan is established voluntarily by the Company, is discretionary in nature and may be modified, amended, suspended or terminated by the Company at any time, to the extent permitted by the Plan and this Restricted Stock Unit Agreement;

(b)    the grant of this RSU is voluntary and occasional and does not create any contractual or other right to receive future awards under the Plan or benefits in lieu of Plan awards, even if RSUs or other Plan awards have been granted in the past;

(c)    all decisions with respect to future RSU awards will be at the sole discretion of the Committee;

(d)    he or she is voluntarily participating in the Plan;

(e)    the future value of the Underlying Shares is unknown and cannot be predicted with certainty;

(f)    if the Recipient resides and/or works outside the United States, the following additional provisions shall apply:

(i)    this RSU, including any Dividend Equivalents, and the Underlying Shares are not intended to replace any pension rights or compensation;

(ii)    this RSU, including any Dividend Equivalents, and the Underlying Shares (including value attributable to each) do not constitute compensation of any kind for services of any kind rendered to the Company and/or any subsidiary thereof and are outside the scope of the Recipient’s employment contract, if any;

(iii)    this RSU, including any Dividend Equivalents, and any Underlying Shares (including the value attributable to each) are not part of normal or expected compensation or salary, including, but not limited to, for purposes of calculating any severance, resignation, termination, redundancy, dismissal, end-of-service payments, bonuses, service awards, pension or retirement or welfare benefits or similar payments unless such other arrangement explicitly provides to the contrary;

(iv)    no claim or entitlement to compensation or damages shall arise from forfeiture of the RSU, including any Dividend Equivalents, resulting from the Recipient’s termination of the Relationship for any reason, and in consideration of this RSU, including any Dividend Equivalents, the Recipient irrevocably agrees never to institute a claim against the Company and/or subsidiary, waives his or her ability to bring such claim and releases the Company and/or subsidiary from any claim; if, notwithstanding the foregoing, such claim is allowed by a court of competent jurisdiction, then by accepting this RSU, including any Dividend Equivalents, the Recipient is deemed irrevocably to have agreed not to pursue such claim and agrees to execute any and all documents necessary to request dismissal or withdrawal of such claims; and

(g)    the Company shall not be liable for any foreign exchange rate fluctuation between the Recipient’s local currency and the United States dollar that may affect the value of this RSU or any amounts due pursuant to the settlement of the RSU or the subsequent sale of any Underlying Shares acquired upon settlement.

17.     Appendix. Notwithstanding any provision in this Restricted Stock Unit Agreement, this RSU shall be subject to any special terms and conditions set forth in any Appendix to this Restricted Stock Unit Agreement for the Recipient’s country of residence or in which the Recipient works. Moreover, if the Recipient relocates to one of the countries included in the Appendix, the special terms and conditions for such country will apply to the Recipient, to the extent the Company determines that the application of such terms and conditions is necessary or advisable in

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order to comply with local law or facilitate the administration of the Plan. The Appendix constitutes part of this Restricted Stock Unit Agreement.

18.     General Provisions.

(a)     Amendment; Waivers. This Restricted Stock Unit Agreement, including the Plan, contains the full and complete understanding and agreement of the parties hereto as to the subject matter hereof, and except as otherwise permitted by the express terms of the Plan and this Restricted Stock Unit Agreement and applicable law, it may not be modified or amended nor may any provision hereof be waived without a further written agreement duly signed by each of the parties; provided, however, that a modification or amendment that does not materially diminish the rights of the Recipient hereunder, as they may exist immediately before the effective date of the modification or amendment, shall be effective upon written notice of its provisions to the Recipient, to the extent permitted by applicable law. The waiver by either of the parties hereto of any provision hereof in any instance shall not operate as a waiver of any other provision hereof or in any other instance. The Recipient shall have the right to receive, upon request, a written confirmation from the Company of the Customizing Information.

(b)     Binding Effect. This Restricted Stock Unit Agreement shall inure to the benefit of and be binding upon the parties hereto and their respective heirs, executors, administrators, representatives, successors and assigns.

(c)     Fractional RSUs, Underlying Shares and Dividend Equivalents. All fractional Underlying Shares and Dividend Equivalents settled in Stock resulting from the application of the Vesting Schedule or the adjustment provisions contained in the Plan shall be rounded down to the nearest whole share. If cash in lieu of Underlying Shares is delivered at settlement, or Dividend Equivalents are settled in cash, the amount paid shall be rounded down to the nearest penny.

(d)     Governing Law. This Restricted Stock Unit Agreement shall be governed by and construed in accordance with the laws of the Commonwealth of Massachusetts, without regard to the principles of conflicts of law.

(e)     Construction. This Restricted Stock Unit Agreement is to be construed in accordance with the terms of the Plan. In case of any conflict between the Plan and this Restricted Stock Unit Agreement, the Plan shall control. The titles of the sections of this Restricted Stock Unit Agreement and of the Plan are included for convenience only and shall not be construed as modifying or affecting their provisions. The masculine gender shall include both sexes; the singular shall include the plural and the plural the singular unless the context otherwise requires. Capitalized terms not defined herein shall have the meanings given to them in the Plan.

(f)     Language. If the Recipient receives this Restricted Stock Unit Agreement, or any other document related to this RSU and/or the Plan translated into a language other than English and if the meaning of the translated version is different than the English version, the English version will control.

(g)     Data Privacy.

(i)    The Recipient hereby explicitly and unambiguously consents to the collection, use and transfer, in electronic or other form, of the Recipient’s personal data as described in this Restricted Stock Unit Agreement by and among, as applicable, his or her employer, the Company and its subsidiaries for the exclusive purpose of implementing, administering and managing the Recipient’s participation in the Plan.

(ii)    The Recipient understands that his or her employer, the Company and its subsidiaries, as applicable, hold certain personal information about the Recipient regarding his or

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her employment, the nature and amount of the Recipient’s compensation and the fact and conditions of the Recipient’s participation in the Plan, including, but not limited to, the Recipient’s name, home address, telephone number and e-mail address, date of birth, social insurance number or other identification number, salary, nationality, job title, any shares of stock or directorships held in the Company and its subsidiaries, details of all options, awards or any other entitlement to shares of stock awarded, canceled, exercised, vested, unvested or outstanding in the Recipient’s favor, for the purpose of implementing, administering and managing the Plan (the “Data”).

(iii)    The Recipient understands that the Data may be transferred to any third parties assisting in the implementation, administration and management of the Plan, that these third parties may be located in the Recipient’s country, or elsewhere, and that the third party’s country may have different data privacy laws and protections than the Recipient’s country. The Recipient understands that the Recipient may request a list with the names and addresses of any potential recipients of the Data by contacting his or her local human resources representative. The Recipient authorizes the recipients to receive, possess, use, retain and transfer the Data, in electronic or other form, for the purposes of implementing, administering and managing the Recipient’s participation in the Plan, including any requisite transfer of such Data as may be required to a broker or other third party. The Recipient understands that the Data will be held only as long as is necessary to implement, administer and manage Recipient’s participation in the Plan. The Recipient understands that he or she may, at any time, view the Data, request additional information about the storage and processing of the Data, require any necessary amendments to the Data or refuse or withdraw the consents herein, in any case without cost, by contacting in writing the Recipient’s local human resources representative. The Recipient understands, however, that refusing or withdrawing his or her consent may affect the Recipient’s ability to participate in the Plan. For more information on the consequences of refusal to consent or withdrawal of consent, the Recipient understands that the Recipient may contact his or her local human resources representative.

(h)     Notices. Any notice in connection with this Restricted Stock Unit Agreement shall be deemed to have been properly delivered if it is delivered in the form specified by the Committee as follows:

To the Recipient:    Last address provided to the Company

To the Company:    Iron Mountain Incorporated

One Federal Street

Boston, Massachusetts 02110

Attn: Chief Financial Officer

(i)     Version Number. This document is Version 3 of the Iron Mountain Incorporated 2014 Stock and Cash Incentive Plan Restricted Stock Unit Agreement.

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IRON MOUNTAIN INCORPORATED

Iron Mountain Incorporated 2014 Stock and Cash Incentive Plan

Restricted Stock Unit Agreement (Version 3)

Appendix
Country-Specific Provisions

Terms and Conditions

This Appendix includes additional, or if so indicated replaces, certain terms and conditions that govern an RSU granted under the Plan if a Recipient resides or works in one of the countries listed below. Capitalized terms used but not defined in this Appendix have the meanings set forth in the Plan and/or the Restricted Stock Unit Agreement.

Notifications

The information contained herein is general in nature and may not apply to each particular Recipient’s situation and the Company is not in a position to assure a Recipient of any particular result. Accordingly, the Recipient is advised to seek appropriate professional advice as to how the relevant laws in a particular country may apply to his or her situation.

If the Recipient is a citizen or resident of a country other than the one in which the Recipient is currently working, transfers employment or service location after the Grant Date, or is considered a resident of another country for local law purposes, the information contained herein may not apply to the Recipient, and the Company shall, in its discretion, determine to what extent the terms and conditions contained herein shall apply.

Belgium

Time for Acceptance. This provision replaces Section 11 of the Restricted Stock Unit Agreement:

Unless the Recipient shall evidence written acceptance of this Restricted Stock Unit Agreement by electronic or other means prescribed by the Committee within sixty (60) days after its delivery, the RSUs and Dividend Equivalents shall be null and void (unless waived by the Committee).

Canada

RSUs Payable Only in Shares. Notwithstanding any discretion in the Plan or anything to the contrary in this Restricted Stock Unit Agreement, the grant of the RSUs does not provide the Recipient any right to receive a cash payment and the RSUs may be settled only in shares of Company Stock.

Vesting. For purposes of Section 2 of the Restricted Stock Unit Agreement, the date of termination of the Relationship will occur on the date active and actual employment or the provision of other services ceases, irrespective of whether such termination of employment or services is wrongful or otherwise, and will not be extended by any period of notice or compensation in lieu thereof.

Time for Acceptance. This provision supplements Section 11 of the Restricted Stock Unit:

The Recipient agrees that his or her acceptance of this award and participation in the Plan is voluntary and has not been induced by the promise of employment or continued employment with the Company or any subsidiary.

France

Information and Disclaimer. Please be mindful that:

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(1) This offer does not require a prospectus to be submitted for approval to the Autorité des Marchés Financiers (“AMF”);

(2) The Recipient may take part in the offer solely for his or her own account; and

(3) Any financial instruments thus acquired cannot be distributed directly or indirectly to the public otherwise than in accordance with Articles L. 411-1, L. 411-2, L. 412-1 and L. 621-8 to L. 621-8-3 of the Monetary and Financial Code.

The information provided to the Recipient in this Restricted Stock Unit Agreement, the Plan or other documents supplied to the Recipient in connection with the award to the Recipient of a restricted stock unit is provided as factual information only and as such is not intended to induce the Recipient to accept to enter into this Restricted Stock Unit Agreement. Any such information does not give or purport to give any indication of the likely future financial success or performance of the Company and historical financial information gives no indication of future financial performance.

The value of a share of Stock of the Company may go down as well as up and the Recipient must make his or her own decision as to whether he or she wishes to receive shares of Common Stock of the Company in the conditions set forth in the Plan. Should the Recipient be in any doubt as to the contents of the offer of this RSU or what course of action to take in relation to the offer, the Recipient is recommended to seek immediately his or her own personal financial advice from the Recipient’s stockbroker, bank manager, solicitor, accountant or other independent financial advisor duly authorized by the competent authorities or bodies.

Vesting. This provision replaces the first sentence of Section 2(a) of the Restricted Stock Unit Agreement:

If the Recipient remains in an employment, contractual or other service relationship with the Company (“Relationship”) as of a “Vesting Date,” as specified in the Customizing Information, all or a portion, as applicable (the “Incremental Amount,” as specified in the Customizing Information), of the RSUs shall vest on such date.

Right of Repayment. Section 12 of the Restricted Stock Unit Agreement shall not apply to the RSU.

Hungary

Grant. Any shares acquired under the Plan are deemed as privately placed under Act No. CXX of 2011 on the Capital Market.

The Netherlands

Effect Upon Employment and Performance of Services. This provision supplements Section 10 of the Restricted Stock Unit Agreement:

RSUs and Dividend Equivalents shall not form part of the employment or services conditions of the Recipient, nor shall they be treated (either at the time when it might apply or in any period prior thereto or any period thereafter) as remuneration for the purpose of pension arrangements nor shall they form any other employment or services related entitlement. RSUs and Dividend Equivalents shall not be included in the calculation of a possible severance payment and the Recipient waives all rights (if any) that he or she may have in this regard.

Poland

Right of Repayment. The right of repayment provided in Section 12 of this Restricted Stock Unit Agreement shall be subject to concluding a non-competition agreement, according to the relevant provisions of Polish law.

Governing Law. This provision supplements Section 17(d) of the Restricted Stock Unit Agreement:

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Any disputes resulting from this Restricted Stock Unit Agreement shall be settled exclusively by United States federal courts in the Commonwealth of Massachusetts.

Language. This provision replaces Section 17(f) of the Restricted Stock Unit Agreement:

This Restricted Stock Unit Agreement was executed in two (2) identical counterparts, each in Polish and English versions, and one for each of the Company and the Recipient. In the case of any discrepancy between the Polish and English version, the Polish version will prevail.

United Kingdom

RSUs Payable Only in Shares. Notwithstanding any discretion in the Plan or anything to the contrary in this Restricted Stock Unit Agreement, the grant of the RSUs does not provide the Recipient any right to receive a cash payment and the RSUs may be settled only in shares of Company Stock.

Withholding Taxes. This provision replaces the first sentence of Section 5 of the Restricted Stock Unit Agreement:

If a liability arises in connection with the award, holding, vesting or settlement of RSUs and/or Dividend Equivalents under which the Company or any subsidiary employing the Recipient is obliged to account for the tax and/or primary social security contributions (otherwise known as employee’s National Insurance Contributions) (“Employee Tax Liability”), then:

(a) If the Dividend Equivalent is cash settled, the Company or the relevant subsidiary may withhold the Employee Tax Liability from the sum of cash due to the Recipient; or

(b) If the RSU and/or Dividend Equivalent is Stock settled, then unless the Recipient makes a payment of an amount equal to the Employee Tax Liability within seven (7) days of being notified by his or her employer or the Company of the amount of the Employee Tax Liability, the Company may withhold sufficient of the shares of Company Stock resulting from the settlement of the RSU and/or Dividend Equivalent and arrange payment to the subsidiary on which the Employee Tax Liability falls of an amount equal to the Employee Tax Liability. If shares are withheld to cover the obligation for the Employee Tax Liability, then for tax purposes, the Recipient shall be deemed to have been issued the full number of shares of Company Stock with respect to the vested RSUs notwithstanding that a number of shares are held back for purposes of paying the Employee Tax Liability.

Effect Upon Employment and Performance of Services. This provision supplements Section 10 of the Restricted Stock Unit Agreement:

The Recipient shall have no entitlement to compensation or damages in consequence of the termination of his or her employment with the Company or any employing subsidiary for any reason whatsoever and whether or not in breach of contract, in so far as such entitlement arises or may arise from his or her ceasing to have rights under the RSU as a result of such termination or from the loss or diminution in value of the same and, upon grant, the Recipient shall be deemed irrevocably to have waived such entitlement.

Any EU Country

Data Privacy. This provision replaces Section 18(g) of the Restricted Stock Unit Agreement in its entirety:

i. The Recipient hereby acknowledges and understands that the Recipient’s personal data is collected, retained, used, processed, disclosed and transferred, in electronic or other form, as described in this Restricted Stock Unit Agreement by and among, as applicable, the Recipient’s employer, the Company and its subsidiaries, and third parties assisting in the implementation, administration and management of the

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Plan for the exclusive purpose of implementing, administering and managing the Recipient’s participation in the Plan.

ii. The Recipient understands that the Company and its subsidiaries (including his or her employer), as applicable, hold certain personal information about him or her regarding the Recipient’s employment, the nature and amount of the Recipient’s compensation and the fact and conditions of the Recipient’s participation in the Plan, including, but not limited to, his or her name, home address, telephone number and e-mail address, date of birth, social insurance number or other identification number, salary, nationality, job title, any equity or directorships held in the Company and details of all options or any other entitlement to equity awarded, canceled, exercised, vested, unvested or outstanding in his or her favor, in connection with the implementation, management and administration of the Plan (the “Data”).

The Recipient understands that the Data may be transferred to the Company, its subsidiaries and any third parties assisting in the implementation, administration and management of the Plan, that these entities or persons may be located in the Recipient’s country, or elsewhere, and that such entity or person’s country may have a different or lower standard of data privacy rights and protections than Recipient’s country. The Recipient understands that he or she may request a list with the names and addresses of any entities or persons that receive the Data by contacting the Recipient’s local human resources representative. The Recipient understands that the entities or persons receive, possess, use, retain and transfer the Data, in electronic or other form, for the purposes of implementing, administering and managing his or her participation in the Plan, including transfers of such Data to a broker or other third party. The Recipient understands that the Data will be held only as long as is necessary to implement, administer and manage his or her participation in the Plan in accordance with applicable law. The Recipient understands that he or she may, at any time, request to access or be provided the Data, request additional information about the storage and processing of the Data, require any corrections or amendments to the Data in any case without cost and to the extent permitted by law, by contacting in writing his or her local human resources representative. The Recipient understands, however, that objecting to the processing of his or her Data may affect the Recipient’s ability to participate in the Plan.

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IRON MOUNTAIN INCORPORATED

Iron Mountain Incorporated 2014 Stock and Cash Incentive Plan

Restricted Stock Unit Schedule

Participant Name

Employee

In accordance with the Restricted Stock Unit Agreement, of which this Restricted Stock Unit Schedule is a part (which together, constitute the “Customizing Information”), the Company hereby grants to Participant Name (the “Recipient”) the following Restricted Stock Units:

Grant Date:                Grant Date

Grant Type:                Grant Type

Grant Date Fair Market Value:    FMV on Grant Date

Number of Units Granted:        Number of shares granted

Vesting Schedule:            Vesting Schedule

Form of Settlement:            Stock

ACCEPTANCE BY RECIPIENT

IN WITNESS WHEREOF, the Company has caused this Restricted Stock Unit Agreement to be issued as of the date set forth above.

Date: ______________________            ____________________________________

(Signature of Recipient)

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EX-10.3

Exhibit 10.3

IRON MOUNTAIN INCORPORATED

Iron Mountain Incorporated 2014 Stock and Cash Incentive Plan

Stock Option Agreement (Version 3)

This Stock Option Agreement and the associated grant award information (the “Customizing Information”), which Customizing Information is provided in written form or is available in electronic form from the recordkeeper for the Iron Mountain Incorporated 2014 Stock and Cash Incentive Plan, as amended and in effect from time to time (the “Plan”), made as of the date shown as the “Grant Date” in the Customizing Information (the “Grant Date”) by and between Iron Mountain Incorporated, a Delaware corporation (the “Company”), and the individual identified in the Customizing Information (the “Optionee”). This instrument and the Customizing Information are collectively referred to as the “Option Agreement.”

WITNESSETH THAT:

WHEREAS, the Company has instituted the Plan; and

WHEREAS, the Compensation Committee (the “Committee”) has authorized the grant of a stock option upon the terms and conditions set forth below and pursuant to the Plan, a copy of which is incorporated herein; and

WHEREAS, the Optionee acknowledges that he or she has carefully read this Option Agreement and agrees, as provided in Section 18(a) below, that the terms and conditions of the Option Agreement reflect the entire understanding between himself or herself and the Company regarding this stock option (and the Optionee has not relied upon any statement or promise other than the terms and conditions of the Option Agreement with respect to this stock option);

NOW, THEREFORE, in consideration of the premises and the mutual covenants and agreements herein contained and for other good and valuable consideration the receipt and adequacy of which are hereby acknowledged, the Company and the Optionee agree as follows.

1. Grant. Subject to the terms of the Plan and this Option Agreement, the Company hereby grants to the Optionee a stock option (the “Option”) to purchase from the Company the amount of Common Stock (“Stock”) shown in the Customizing Information under “Shares Granted.” If so provided in the “Grant Type” shown in the Customizing Information, this Option is intended to constitute for United States income tax purposes an Incentive Stock Option and to qualify for special United States federal income tax treatment under Section 422 of the Code and upon exercise, the maximum number of shares that can be treated as Incentive Stock Options shall be so treated, and the remainder shall be treated as Nonstatutory Stock Options.

2. Grant Price. This Option may be exercised at the “Grant Price” per share shown in the Customizing Information, subject to adjustment as provided herein and in the Plan.

3. Term and Exercisability of Option. This Option shall expire at 4:00 p.m. Eastern Time on the “Expiration Date” shown in the Customizing Information, unless the Option expires earlier pursuant to this Section 3 or any provision of the Plan. At any time before its expiration, this Option may be exercised to the extent vested, as shown in the Customizing Information, provided that:

(a) at the time of exercise the Optionee is not in violation of any confidentiality, inventions, non-solicitation and/or non-competition agreement with the Company;

(b) the Optionee’s employment, contractual or other service relationship with the Company (“Relationship”) must be in effect on a given date in order for any scheduled increment in vesting, as set forth in the “Vesting Schedule” shown in the Customizing Information, to become effective, except as provided in Section 3(c) below

(c) if the Optionee’s Relationship with the Company terminates on account of Retirement (as defined below) on or after the first July 1 following the Grant Date, the Option shall continue to vest on the schedule shown in the Customizing Information, provided the Optionee continues to comply with any confidentiality, inventions, non-solicitation and/or non-competition agreement with the Company;

(d) this Option may not be exercised after the sixtieth (60th) day following the date of termination of the Relationship between the Optionee and the Company, except that (i) if the Relationship terminates by reason of the Optionee’s death or total and permanent disability (as determined by the Board on the basis of medical advice satisfactory to it), the entire remaining Option shall become fully vested and the unexercised portion of the Option shall remain exercisable thereafter for one (1) year and (ii) if the Relationship terminates on account of the Optionee’s Retirement on or after the first July 1 following the Grant Date, the unexercised portion of the Option that is vested or becomes vested pursuant to Section 3(c) above shall remain exercisable thereafter until the earlier of three (3) years after termination of the Relationship or the Option Expiration Date as detailed in the Customizing Information; and

(e) in the event the Relationship is terminated for any reason (whether voluntary or involuntary), (i) the Optionee’s right to vest in the Option will, except as provided in Section 9(c) of the Plan or otherwise explicitly in Sections 3(c) and 3(d) or as provided by the Committee, terminate as of the date of termination of the Relationship (and such right shall not be extended by any notice period mandated under local law), (ii) the Optionee’s continuing right (if any) to exercise the Option after termination of the Relationship will be measured from the date of termination of the Relationship (and such right will not be extended by any notice period mandated under local law) and (iii) the Committee shall have the exclusive discretion to determine when the Relationship has terminated for purposes of this Option (including determining when the Optionee is no longer considered to be providing active service while on a leave of absence).

For purposes of this Section 3, the term “Company” refers to the Company as defined in the last sentence of Section 1 of the Plan, and the term “Retirement” means termination of the Optionee’s Relationship with the Company after the Optionee has attained age fifty-eight (58) and has a combined age and Years of Credited Service of at least seventy (70). “Years of Credited Service” shall mean the Optionee’s years of total adjusted service with the Company, calculated from the Optionee’s initial hire date with the Company (or any predecessor business acquired by the Company) and without regard to any lapses in active employment while employed by the Company, such as approved leaves of absences.

It is the Optionee’s responsibility to be aware of the date that the Option expires.

4. Method of Exercise. Prior to its expiration and to the extent that the right to purchase shares of Stock has vested hereunder, this Option may be exercised in whole or in part from time to time by notice provided in a manner consistent with the requirements of Section 5(e) of the Plan, accompanied by payment in full of the Grant Price by means of payment acceptable to the Company in accordance with Section 5(f) of the Plan.

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As soon as practicable after its receipt of notice, the Company shall, without transfer or issue tax to the Optionee (or other person entitled to exercise this Option), (i) deliver to the Optionee (or other person entitled to exercise this Option), at the principal executive offices of the Company or such other place as shall be mutually acceptable, a stock certificate or certificates for such shares out of theretofore authorized but unissued shares or treasury shares of its Stock as the Company may elect or (ii) issue shares of its Stock in book entry form; provided, however, that the time of delivery or issuance may be postponed by the Company for such period as may be required for it with reasonable diligence to comply with any applicable requirements of law; and provided, further, that any shares delivered or issued shall remain subject to any applicable securities law or trading restrictions imposed pursuant to the terms of this Option Agreement and the Plan.

If the Optionee (or other person entitled to exercise this Option) fails to pay for and accept delivery of all of the shares specified in the notice upon tender of delivery thereof, his or her right to exercise this Option with respect to such shares not paid for may be terminated by the Company.

5. Withholding Taxes. The Optionee hereby agrees, as a condition to any exercise of this Option, to provide to the Company (or a subsidiary employing the Optionee, as applicable) an amount sufficient to satisfy the Company’s and/or subsidiary’s obligation to withhold any and all federal, state, local or provincial income tax, social security, social insurance, payroll tax, fringe benefits tax, payment on account or other tax-related items or statutory withholdings related to the Optionee’s participation in the Plan (the ”Withholding Amount”), if any, by (a) authorizing the Company and/or any subsidiary employing the Optionee, as applicable, to withhold the Withholding Amount from the Optionee’s cash compensation or (b) remitting the Withholding Amount to the Company (or a subsidiary employing the Optionee, as applicable) in cash; provided, however, that to the extent that the Withholding Amount is not provided by one or a combination of such methods, the Company may at its election withhold from the Stock that would otherwise be delivered upon exercise of this Option that number of shares having a Fair Market Value on the date of exercise sufficient to eliminate any deficiency in the Withholding Amount. Regardless of any action that the Company and/or subsidiary takes with respect to any or all federal, state, local or provincial income tax, social security, social insurance, payroll tax, fringe benefits tax, payment on account or other tax-related items or statutory withholdings related to the Optionee’s participation in the Plan, the Optionee acknowledges that he or she, and not the Company and/or any subsidiary, has the ultimate liability for any such items. Further, if the Optionee becomes subject to tax in more than one jurisdiction between the Grant Date and the date of any relevant taxable or tax withholding event, the Optionee acknowledges that the Company and/or subsidiary may be required to withhold or account for such tax-related items in more than one jurisdiction.

6. Non-assignability of Option. This Option shall not be assignable or transferable by the Optionee except by will or by the laws of descent and distribution or as permitted by the Committee in its discretion pursuant to the terms of the Plan. During the life of the Optionee, this Option shall be exercisable only by him or her, by a conservator or guardian duly appointed for him or her by reason of the Optionee’s incapacity or by the person appointed by the Optionee in a durable power of attorney acceptable to the Company’s counsel.

7. Compliance with Securities Act; Lock-Up Agreement. The Company shall not be obligated to sell or issue any shares of Stock or other securities pursuant to the exercise of this Option unless the shares of Stock or other securities with respect to which this Option is being exercised are at that time effectively registered or exempt from registration under the Securities Act and applicable state or provincial securities laws. In the event shares or other securities shall be issued that shall not be so registered, the Optionee hereby represents, warrants and agrees that he or she will receive such shares or other securities for investment and not with a view to their resale or distribution, and will execute an appropriate investment letter satisfactory to the Company and its counsel. The Optionee further hereby agrees that as a condition to the purchase of shares upon exercise of this Option, he or she will execute an agreement in a form acceptable to the Company to the effect that the shares shall be subject to any underwriter’s lock-up agreement in connection with a public offering of any securities of the Company that may from time to time apply to shares held by officers and employees of the Company, and such agreement or a successor agreement must be in full force and effect.

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8. Legends. The Optionee hereby acknowledges that the stock certificate or certificates (or entries in the case of book entry form) evidencing shares of Stock or other securities issued pursuant to any exercise of this Option may bear a legend (or provide a restriction) setting forth the restrictions on their transferability described in Section 7 hereof, if such restrictions are then in effect.

9. Rights as Stockholder. The Optionee shall have no rights as a stockholder with respect to any shares covered by this Option until the date of issuance of a stock certificate (or appropriate entry is made in the case of book entry form) to him or her for such shares. No adjustment shall be made for dividends or other rights for which the record date is prior to the date such stock certificate is issued (or appropriate entry is made in the case of book entry form).

10. Effect Upon Employment and Performance of Services. Nothing in this Option or the Plan shall be construed to impose any obligation upon the Company or any subsidiary to employ or utilize the services of the Optionee or to retain the Optionee in its employ or to engage or retain the services of the Optionee.

11. Time for Acceptance. Unless the Optionee shall evidence his or her acceptance of this Option by electronic or other means prescribed by the Committee within sixty (60) days after its delivery, the Option shall be null and void (unless waived by the Committee).

12. Notice of Disqualifying Disposition. If the “Grant Type” shown in the Customizing Information indicates that the Option is an Incentive Stock Option, the Optionee agrees to notify the Company promptly in the event that he or she sells, transfers, exchanges or otherwise disposes of any shares of Stock issued upon exercise of the Option before the later of (a) the second anniversary of the date of grant of the Option and (b) the first anniversary of the date the shares were issued upon his or her exercise of the Option.

13. Right of Repayment. In the event that the Optionee breaches any confidentiality, inventions, non-solicitation and/or non-competition agreement with the Company, the Optionee shall pay to the Company an amount equal to the excess of the Fair Market Value of the Stock as of the date of exercise over the price paid for such shares; provided, however, that the Committee in its discretion may release the Optionee from the requirement to make such payment, if the Committee determines that the Optionee’s breach of such agreement is not inimical to the best interests of the Company. In accordance with applicable law, the Company may deduct the amount of payment due under the preceding sentence from any compensation or other amount payable by the Company to the Optionee. For purposes of this Section 13, the term “Company” refers to the Company as defined in the last sentence of Section 1 of the Plan.

14. Electronic Delivery. The Company may, in its sole discretion, decide to deliver any documents related to current or future participation in the Plan by electronic means. The Optionee consents to receive such documents by electronic delivery and agrees to participate in the Plan through an on-line or electronic system established and maintained by the Company or a third party designated by the Company.

15. Company Policies. This Option shall be subject to any applicable clawback or recoupment policies, share trading policies, and other policies that may be implemented by the Board from time to time, in accordance with applicable law.

16. Nature of Award. By accepting this Option, the Optionee acknowledges, understands and agrees that:

(a)    the Plan is established voluntarily by the Company, is discretionary in nature and may be modified, amended, suspended or terminated by the Company at any time, to the extent permitted by the Plan and this Option Agreement;

(b)    the grant of this Option is voluntary and occasional and does not create any contractual or other right to receive future awards under the Plan or benefits in lieu of Plan awards, even if Options or other Plan awards have been granted in the past;

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(c)    all decisions with respect to future Option grants or Plan awards will be at the sole discretion of the Committee;

(d)    he or she is voluntarily participating in the Plan;

(e)    the future value of shares of Stock underlying the Option is unknown and cannot be predicted with certainty;

(f)    if the underlying shares of Stock do not increase in value, the Option, as measured by the difference between the fair market value of the Stock and the Grant Price, will have no value;

(g)    if the Optionee exercises the Option and acquires shares of Stock, the value of such shares may increase or decrease in value;

(h)    if the Optionee resides and/or works outside the United States, the following additional provisions shall apply:

(i)    the Option and any shares of Stock acquired under the Plan do not replace any pension or retirement rights or compensation;

(ii)    the Option and any shares of Stock acquired under the Plan (including the value attributable to each) do not constitute compensation of any kind for services of any kind rendered to the Company and/or any subsidiary thereof and are outside the scope of the Optionee’s employment contract, if any;

(iii) the Option and any shares of Stock acquired under the Plan (including the value attributable to each) are not part of normal or expected compensation or salary, including, but not limited to, for purposes of calculating any severance, resignation, termination, redundancy, dismissal, end-of-service payments, bonuses, service awards, pension or retirement or welfare benefits or similar payments unless such other arrangement explicitly provides to the contrary;

(iv)    no claim or entitlement to compensation or damages shall arise from forfeiture of the Option resulting from a termination of the Relationship for any reason and in consideration of the grant of the Option, the Optionee irrevocably agrees never to institute a claim against the Company and/or any subsidiary, waives his or her ability to bring such claim and releases the Company and/or its subsidiaries from any claim; if, notwithstanding the foregoing, such claim is allowed by a court of competent jurisdiction, then by accepting this Option, the Optionee is deemed irrevocably to have agreed not to pursue such claim and agrees to execute any and all documents necessary to request dismissal or withdrawal of such claims; and

(i)    the Company shall not be liable for any foreign exchange rate fluctuation between the Optionee’s local currency and the United States dollar that may affect the value of the Option or any amounts due pursuant to the exercise of the Option or the subsequent sale of any shares of Stock acquired upon settlement.

17. Appendix. Notwithstanding any provision in this Option Agreement, the Option grant shall be subject to any special terms and conditions set forth in any Appendix to this Option Agreement for the Optionee’s country of residence or in which the Optionee works. Moreover, if the Optionee relocates to one of the countries included in the Appendix, the special terms and conditions for such country will apply to the Optionee, to the extent the Company determines that the application of such terms and conditions is necessary or advisable in order to comply with local law or facilitate the administration of the Plan. The Appendix constitutes part of this Option Agreement.

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18. General Provisions.

(a) Amendment; Waivers. This Option Agreement, including the Plan, contains the full and complete understanding and agreement of the parties hereto as to the subject matter hereof, and except as otherwise permitted by the express terms of the Plan, this Option Agreement and applicable law, it may not be modified or amended nor may any provision hereof be waived without a further written agreement duly signed by each of the parties; provided, however, that a modification or amendment that does not materially diminish the rights of the Optionee hereunder, as they may exist immediately before the effective date of the modification or amendment, shall be effective upon written notice of its provisions to the Optionee, to the extent permitted by applicable law. The waiver by either of the parties hereto of any provision hereof in any instance shall not operate as a waiver of any other provision hereof or in any other instance. The Optionee shall have the right to receive, upon request, a written confirmation from the Company of the Customizing Information.

(b) Binding Effect. This Option Agreement shall inure to the benefit of and be binding upon the parties hereto and their respective heirs, executors, administrators, representatives, successors and assigns.

(c) Governing Law. This Option Agreement shall be governed by and construed in accordance with the laws of the Commonwealth of Massachusetts, without regard to the principles of conflicts of law.

(d) Construction. This Option Agreement is to be construed in accordance with the terms of the Plan. In case of any conflict between the Plan and this Option Agreement, the Plan shall control. The titles of the sections of this Option Agreement and of the Plan are included for convenience only and shall not be construed as modifying or affecting their provisions. The masculine gender shall include both sexes; the singular shall include the plural and the plural the singular unless the context otherwise requires. Capitalized terms not defined herein shall have the meanings given to them in the Plan.

(e) Language. If the Optionee receives this Option Agreement, or any other document related to the Option and/or the Plan translated into a language other than English and if the meaning of the translated version is different than the English version, the English version will control.

(f) Data Privacy.

(i)    The Optionee hereby explicitly and unambiguously consents to the collection, use and transfer, in electronic or other form, of the Optionee’s personal data as described in this Option Agreement by and among, as applicable, his or her employer, the Company and its subsidiaries for the exclusive purpose of implementing, administering and managing the Optionee’s participation in the Plan.

(ii)    The Optionee understands that his or her employer, the Company and its subsidiaries, as applicable, hold certain personal information about the Optionee regarding his or her employment, the nature and amount of the Optionee’s compensation and the fact and conditions of the Optionee’s participation in the Plan, including, but not limited to, the Optionee’s name, home address, telephone number and e-mail address, date of birth, social insurance number or other identification number, salary, nationality, job title, any shares of stock or directorships held in the Company and its subsidiaries, details of all options, awards or any other entitlement to shares of stock awarded, canceled, exercised, vested, unvested or outstanding in the Optionee’s favor, for the purpose of implementing, administering and managing the Plan (the “Data”).

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(iii)    The Optionee understands that the Data may be transferred to any third parties assisting in the implementation, administration and management of the Plan, that these third parties may be located in the Optionee’s country, or elsewhere, and that the third party’s country may have different data privacy laws and protections than the Optionee’s country. The Optionee understands that the Optionee may request a list with the names and addresses of any potential recipients of the Data by contacting his or her local human resources representative. The Optionee authorizes the recipients to receive, possess, use, retain and transfer the Data, in electronic or other form, for the purposes of implementing, administering and managing the Optionee’s participation in the Plan, including any requisite transfer of such Data as may be required to a broker or other third party. The Optionee understands that the Data will be held only as long as is necessary to implement, administer and manage Optionee’s participation in the Plan. The Optionee understands that he or she may, at any time, view the Data, request additional information about the storage and processing of the Data, require any necessary amendments to the Data or refuse or withdraw the consents herein, in any case without cost, by contacting in writing the Optionee’s local human resources representative. The Optionee understands, however, that refusing or withdrawing his or her consent may affect the Optionee’s ability to participate in the Plan. For more information on the consequences of refusal to consent or withdrawal of consent, the Optionee understands that the Optionee may contact his or her local human resources representative.

(g) Notices. Any notice in connection with this Option Agreement shall be deemed to have been properly delivered if it is delivered in the form specified by the Committee as follows:

To the Optionee:    To his or her last address provided to the Company

To the Company:    Iron Mountain Incorporated

One Federal Street

Boston, Massachusetts 02110

Attn: Chief Financial Officer

(h) Version Number. This document is Version 3 of the Iron Mountain Incorporated 2014 Stock and Cash Incentive Plan Stock Option Agreement.

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IRON MOUNTAIN INCORPORATED

Iron Mountain Incorporated 2014 Stock and Cash Incentive Plan

Stock Option Agreement (Version 3)

Appendix
Country-Specific Provisions

Terms and Conditions

This Appendix includes additional, or if so indicated replaces certain, terms and conditions that govern an Option granted under the Plan if an Optionee resides or works in one of the countries listed below. Capitalized terms used but not defined in this Appendix have the meanings set forth in the Plan and/or the Option Agreement.

Notifications

The information contained herein is general in nature and may not apply to each particular Optionee’s situation and the Company is not in a position to assure an Optionee of any particular result. Accordingly, the Optionee is advised to seek appropriate professional advice as to how the relevant laws in a particular country may apply to his or her situation.

If the Optionee is a citizen or resident of a country other than the one in which the Optionee is currently working, transfers employment or service location after the Grant Date or is considered a resident of another country for local law purposes, the information contained herein may not apply to the Optionee, and the Company shall, in its discretion, determine to what extent the terms and conditions contained herein shall apply.

Belgium

Time for Acceptance. This provision replaces Section 11 of the Option Agreement:

Unless the Optionee shall evidence his or her written acceptance of this Option by electronic or other means prescribed by the Committee within ninety (90) days after its delivery, the Option shall be null and void (unless waived by the Committee).

Canada

Payment of Grant Price. Notwithstanding anything to the contrary in the Plan or this Option Agreement, the Grant Price may not be paid by delivery of shares of Company Stock or by using the net exercise procedure under the Plan.

Grant Type. In no event shall the Option be intended to constitute for United States income tax purposes an Incentive Stock Option or to qualify for special United States federal income tax treatment under section 422 of the Code.

Term and Exercisability of Option.

For purposes of Section 3 of the Option Agreement, the date of termination of the Relationship will occur on the date active and actual employment or the provision of other services ceases, irrespective of whether such termination of employment or services is wrongful or otherwise, and will not be extended by any period of notice or compensation in lieu thereof.

Time for Acceptance. This provision supplements Section 11 of the Option Agreement:

The Optionee agrees that his acceptance of this Option and participation in the Plan is voluntary and has not been induced by the promise of employment or continued employment with the Company or any subsidiary.

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France

Information and Disclaimer. Please be mindful that:

(1) This offer does not require a prospectus to be submitted for approval to the Autorité des Marchés Financiers (“AMF”);

(2) The Optionee may take part in the offer solely for his or her own account; and

(3) Any financial instruments thus acquired cannot be distributed directly or indirectly to the public otherwise than in accordance with Articles L. 411-1, L. 411-2, L. 412-1 and L. 621-8 to L. 621-8-3 of the Monetary and Financial Code.

The information provided to the Optionee in this Option Agreement, the Plan or other documents supplied to the Optionee in connection with the offer to the Optionee of stock options is provided as factual information only and as such is not intended to induce the Optionee to accept to enter into this Option Agreement. Any such information does not give or purport to give any indication of the likely future financial success or performance of the Company and historical financial information gives no indication of future financial performance.

The value of a share of Stock of the Company may go down as well as up and the Optionee must make his or her own decision as to whether he or she wishes to receive shares of Stock of the Company in the conditions set forth in the Plan. Should the Optionee be in any doubt as to the contents of the offer of this Option award or what course of action to take in relation to the offer, the Optionee is recommended to seek immediately his or her own personal financial advice from his or her stockbroker, bank manager, solicitor, accountant or other independent financial advisor duly authorized by the competent authorities or bodies.

Term and Exercisability of Option. Section 3(a) of the Option Agreement shall not apply to the Option. With respect to Section 3(b) of the Option Agreement, and for the avoidance of doubt, no further vesting shall occur after the date of dismissal, resignation or mutual termination, without regard to the Date of Termination Notification, as defined in Section 3(c) of the Option Agreement, as modified. Section 3(c) of the Option Agreement shall be modified by replacing the phrase “this Option may not be exercised after the sixtieth (60th) day following the date of termination of the Relationship between the Optionee and the Company” with the phrase “this Option may not be exercised after the sixtieth (60th) day following the date of sending the dismissal letter or resignation letter or date of signature reflecting mutual termination (“Date of Termination Notification”).”

Right of Repayment. Section 13 of the Option Agreement shall not apply to the Option.

Hungary

Grant. Any shares acquired under the Plan are deemed as privately placed under Act No. CXX of 2011 on the Capital Market.

The Netherlands

Effect Upon Employment and Performance of Services. This provision supplements Section 10 of the Option Agreement:

Options shall not form part of the employment or services conditions of the Optionee, nor shall they be treated (either at the time when it might apply or in any period prior thereto or any period thereafter) as remuneration for the purpose of pension arrangements nor shall they form any other employment or services related entitlement. Options shall not be included in the calculation of a possible severance payment and the Optionee waives all rights (if any) that he or she may have in this regard.

Poland

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Right of Repayment. The right of repayment provided in Section 13 of this Option Agreement shall be subject to concluding a non-competition agreement, according to the relevant provisions of Polish law.

Governing Law. This provision supplements Section 17(c) of the Option Agreement:

Any disputes resulting from this Option Agreement shall be settled exclusively by United States federal courts in the Commonwealth of Massachusetts.

Language. This provision replaces Section 17(e) of the Option Agreement:

This Option Agreement was executed in two (2) identical counterparts, each in Polish and English versions, and one for each of the Company and the Optionee. In the case of any discrepancy between the Polish and English version, the Polish version will prevail.

United Kingdom

Applicable Sub-Plan. This Option shall be subject to the United Kingdom Appendix for Unapproved Options to the Plan for grants to Optionees resident in the United Kingdom.

Grant Type. In no event shall the Option be intended to constitute for United States income tax purposes an Incentive Stock Option or to qualify for special United States federal income tax treatment under section 422 of the Code, nor is the Option intended to qualify for special tax treatment under Schedule 4 to the Income Tax (Earnings and pensions) Act 2003. Section 12 of the Option Agreement shall be inapplicable.

Term of Option. This provision replaces Section 3(c) of the Option Agreement:

(c) this Option may not be exercised after the sixtieth (60th) day following the date of termination of the Relationship between the Optionee and the Company, except that (i) if the Relationship terminates by reason of the Optionee’s death or total and permanent disability (as determined by the Board on the basis of medical advice satisfactory to it), the entire remaining Option shall become fully vested and the unexercised portion of the Option that is otherwise exercisable on the date of termination of the Relationship shall remain exercisable thereafter for one (1) year and (ii) if the Relationship ends on or after the Optionee’s Retirement, the unexercised portion of the Option that is otherwise exercisable when the Relationship ends shall remain exercisable thereafter for three (3) years; and

Withholding Taxes. This provision replaces the first sentence of Section 5 of the Option Agreement:

If a liability arises in connection with the exercise of an Option under which the Company or any subsidiary employing the Optionee is obliged to account for the tax and/or primary social security contributions (otherwise known as employee’s National Insurance contributions) (“Employee Tax Liability”), then unless

(a)    the relevant Optionee has indicated in the form of exercise that he or she will make a payment to his or her employer or the Company of an amount equal to the Employee Tax Liability and

(b)    the Optionee does, within seven (7) days of being notified by his or her employer or the Company of the amount of the Employee Tax Liability, make such payment to his or her employer or the Company,

the Company may withhold sufficient of the shares of Common Stock that would otherwise be issuable upon the exercise of the Option and arrange payment to the employing subsidiary on which the Employee Tax Liability falls of an amount equal to the Employee Tax Liability. If shares are withheld to cover the obligation for the Employee Tax Liability, then for tax purposes, the Optionee shall be deemed to have been

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issued the full number of shares of Company Stock with respect to which the Option is exercised notwithstanding that a number of shares are held back for purposes of paying the Employee Tax Liability.

Effect Upon Employment and Performance of Services. This provision supplements Section 10 of the Option Agreement:

The Optionee shall have no entitlement to compensation or damages in consequence of the termination of his or her employment with the Company or any employing subsidiary for any reason whatsoever and whether or not in breach of contract, in so far as such entitlement arises or may arise from his or her ceasing to have rights under or to be entitled to exercise the Option as a result of such termination or from the loss or diminution in value of the same and, upon grant, the Optionee shall be deemed irrevocably to have waived such entitlement.

Any EU Country

Data Privacy. This provision replaces Section 18(f) of the Option Agreement in its entirety:

i. The Optionee hereby acknowledges and understands that the Optionee’s personal data is collected, retained, used, processed, disclosed and transferred, in electronic or other form, as described in this Option Agreement by and among, as applicable, the Optionee’s employer, the Company and its subsidiaries, and third parties assisting in the implementation, administration and management of the Plan for the exclusive purpose of implementing, administering and managing the Optionee’s participation in the Plan.

ii. The Optionee understands that the Company and its subsidiaries (including his or her employer), as applicable, hold certain personal information about him or her regarding the Optionee’s employment, the nature and amount of the Optionee’s compensation and the fact and conditions of the Optionee’s participation in the Plan, including, but not limited to, his or her name, home address, telephone number and e-mail address, date of birth, social insurance number or other identification number, salary, nationality, job title, any equity or directorships held in the Company and details of all options or any other entitlement to equity awarded, canceled, exercised, vested, unvested or outstanding in his or her favor, in connection with the implementation, management and administration of the Plan (the “Data”).

iii. The Optionee understands that the Data may be transferred to the Company, its subsidiaries and any third parties assisting in the implementation, administration and management of the Plan, that these entities or persons may be located in the Optionee’s country, or elsewhere, and that such entity or person’s country may have a different or lower standard of data privacy rights and protections than Optionee’s country. The Optionee understands that he or she may request a list with the names and addresses of any entities or persons that receive the Data by contacting the Optionee’s local human resources representative. The Optionee understands that the entities or persons receive, possess, use, retain and transfer the Data, in electronic or other form, for the purposes of implementing, administering and managing his or her participation in the Plan, including transfers of such Data to a broker or other third party. The Optionee understands that the Data will be held only as long as is necessary to implement, administer and manage his or her participation in the Plan in accordance with applicable law. The Optionee understands that he or she may, at any time, request to access or be provided the Data, request additional information about the storage and processing of the Data, require any corrections or amendments to the Data in any case without cost and to the extent permitted by law, by contacting in writing his or her local human resources representative. The Optionee understands, however, that objecting to the processing of his or her Data may affect the Optionee’s ability to participate in the Plan.

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IRON MOUNTAIN INCORPORATED

Iron Mountain Incorporated 2014 Stock and Cash Incentive Plan

Stock Option Schedule

Participant Name

Employee ID

In accordance with the Stock Option Agreement, of which this Stock Option Schedule is a part (which together, constitute the “Option Agreement”), the Company hereby grants to Participant Name (the “Optionee”) the following Option to purchase shares of Stock:

Grant Date:                Grant Date

Grant Type:                Grant Type

Shares Granted:             Shares

Grant Price:                Grant Price

Expiration Date:            Expiration Date

Vesting Schedule:            Vesting Schedule

ACCEPTANCE BY OPTIONEE

IN WITNESS WHEREOF, the Company has caused this Option Document to be issued as of the date set forth above.

Date: ______________________            ____________________________________

(Signature of Optionee)

12

EX-31.1

EXHIBIT 31.1

CERTIFICATIONS

I, William L. Meaney, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Iron Mountain Incorporated; 

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(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have: 

(a) 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(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a) 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.

Date: April 25, 2019

/s/ WILLIAM L. MEANEY

William L. Meaney

President and Chief Executive Officer

EX-31.2

EXHIBIT 31.2 

CERTIFICATIONS

I, Stuart B. Brown, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Iron Mountain Incorporated;

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(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have: 

(a) 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(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions): 

(a) 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.

Date: April 25, 2019

/s/ STUART B. BROWN

Stuart B. Brown

Executive Vice President and Chief Financial Officer

EX-32.1

EXHIBIT 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. Section 1350, as adopted pursuant to

Section 906 of the Sarbanes-Oxley Act of 2002 

In connection with the filing of the quarterly report on Form 10-Q for the quarter ended March 31, 2019 (the "Report") by Iron Mountain Incorporated (the "Company"), the undersigned, as the President and Chief Executive Officer of the Company, hereby certifies pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge:

1.    the Report fully complies with the requirements of Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934; and

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

Date: April 25, 2019

/s/ WILLIAM L. MEANEY

William L. Meaney

President and Chief Executive Officer

EX-32.2

EXHIBIT 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. Section 1350, as adopted pursuant to

Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the filing of the quarterly report on Form 10-Q for the quarter ended March 31, 2019 (the "Report") by Iron Mountain Incorporated (the "Company"), the undersigned, as the Executive Vice President and Chief Financial Officer of the Company, hereby certifies pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge:

1.    the Report fully complies with the requirements of Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934; and

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

Date: April 25, 2019

/s/ STUART B. BROWN

Stuart B. Brown

Executive Vice President and Chief Financial Officer

XML

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2019	Apr. 19, 2019
Document and Entity Information
Entity Registrant Name	IRON MOUNTAIN INC
Entity Central Index Key	0001020569
Document Type	10-Q
Document Period End Date	Mar. 31, 2019
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		286,880,641
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Entity Emerging Growth Company	false
Entity Small Business	false

XML

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Current Assets:
Cash and cash equivalents	$ 161,475	$ 165,485
Accounts receivable (less allowances of $42,074 and $43,584 as of March 31, 2019 and December 31, 2018, respectively)	837,521	846,889
Prepaid expenses and other	210,854	195,740
Total Current Assets	1,209,850	1,208,114
Property, Plant and Equipment:
Property, plant and equipment	7,738,705	7,600,949
Less—Accumulated depreciation	(3,213,122)	(3,111,392)
Property, Plant and Equipment, Net	4,525,583	4,489,557
Other Assets, Net:
Goodwill	4,465,378	4,441,030
Customer relationships, customer inducements and data center lease-based intangibles	1,495,338	1,506,522
Operating lease right-of-use assets (see Note 2.d.)	1,791,536
Other	201,678	207,024
Total Other Assets, Net	7,953,930	6,154,576
Total Assets	13,689,363	11,852,247
Current Liabilities:
Current portion of long-term debt	125,142	126,406
Accounts payable	283,709	318,765
Accrued expenses and other current liabilities (includes current portion of operating lease liabilities, see Note 2.d.)	839,968	752,684
Deferred revenue	266,314	264,823
Total Current Liabilities	1,515,133	1,462,678
Long-term Debt, net of current portion	8,365,737	8,016,417
Long-term Operating Lease Liabilities, net of current portion (see Note 2.d.)	1,656,659
Other Long-term Liabilities	127,127	111,331
Deferred Rent (see Note 2.d.)	0	121,864
Deferred Income Taxes	190,871	183,836
Commitments and Contingencies (see Note 7)
Redeemable Noncontrolling Interest	73,102	70,532
Iron Mountain Incorporated Stockholders' Equity:
Preferred stock (par value $0.01; authorized 10,000,000 shares; none issued and outstanding)	0	0
Common stock (par value $0.01; authorized 400,000,000 shares; issued and outstanding 286,829,854 and 286,321,009 shares as of March 31, 2019 and December 31, 2018, respectively)	2,868	2,863
Additional paid-in capital	4,264,978	4,263,348
(Distributions in excess of earnings) Earnings in excess of distributions	(2,257,485)	(2,116,367)
Accumulated other comprehensive items, net	(250,960)	(265,664)
Total Iron Mountain Incorporated Stockholders' Equity	1,759,401	1,884,180
Noncontrolling Interests	1,333	1,409
Total Equity	1,760,734	1,885,589
Total Liabilities and Equity	$ 13,689,363	$ 11,852,247

XML

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Accounts receivable, allowances (in dollars)	$ 42,074	$ 43,584
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, authorized shares	10,000,000	10,000,000
Preferred stock, issued shares	0	0
Preferred stock, outstanding shares	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized shares	400,000,000	400,000,000
Common stock, issued shares	286,829,854	286,321,009
Common stock, outstanding shares	286,829,854	286,321,009

XML

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenues:
Revenues	$ 1,053,863	$ 1,042,458
Operating Expenses:
Cost of sales (excluding depreciation and amortization)	461,544	448,721
Selling, general and administrative	270,559	269,730
Depreciation and amortization	162,483	160,578
Loss (Gain) on disposal/write-down of property, plant and equipment, net (see Note 2.l.)	602	(1,130)
Total Operating Expenses	895,188	877,899
Operating Income (Loss)	158,675	164,559
Interest Expense (Income), Net	102,436	97,626
Other Expense (Income), Net	15,210	20,151
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes	41,029	46,782
Provision (Benefit) for Income Taxes	10,553	1,168
Income (Loss) from Continuing Operations	30,476	45,614
Income (loss) from discontinued operations, net of tax	(24)	(462)
Net income (loss)	30,452	45,152
Less: Net Income (Loss) Attributable to Noncontrolling Interests	891	468
Net Income (Loss) Attributable to Iron Mountain Incorporated	$ 29,561	$ 44,684
Earnings (Losses) per Share—Basic:
Income (Loss) from Continuing Operations	$ 0.10	$ 0.16
Total (Loss) Income from Discontinued Operations, Net of Tax, per Basic Share	0.00	0.00
Net Income (Loss) Attributable to Iron Mountain Incorporated	0.10	0.16
Earnings (Losses) per Share-Diluted:
Income (Loss) from Continuing Operations	0.10	0.16
Total (Loss) Income from Discontinued Operations, Net of Tax	0.00	0.00
Net Income (Loss) Attributable to Iron Mountain Incorporated	$ 0.10	$ 0.16
Weighted Average Common Shares Outstanding-Basic (in shares)	286,528,000	285,259,000
Weighted Average Common Shares Outstanding-Diluted (in shares)	287,491,823	285,992,878
Storage rental
Revenues:
Revenues	$ 662,974	$ 651,149
Service
Revenues:
Revenues	$ 390,889	$ 391,309

XML

CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income Statement [Abstract]
Interest Income	$ 1,785	$ 1,386

XML

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ 30,452	$ 45,152
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustment	18,191	31,651
Change in Fair Value of Interest Rate Swap Agreements	(2,674)	(185)
Total Other Comprehensive Income (Loss)	15,517	31,466
Comprehensive Income (Loss)	45,969	76,618
Comprehensive Income (Loss) Attributable to Noncontrolling Interests	1,704	2,027
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	$ 44,265	$ 74,591

XML

CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Earnings in Excess of Distributions (Distributions in Excess of Earnings)	Accumulated Other Comprehensive Items, Net	Noncontrolling Interests	Redeemable Noncontrolling Interests	Over-Allotment Option [Member]	Over-Allotment Option [Member] Common Stock	Over-Allotment Option [Member] Additional Paid-in Capital	At The Market (ATM) Equity Program [Member]	At The Market (ATM) Equity Program [Member] Common Stock	At The Market (ATM) Equity Program [Member] Additional Paid-in Capital
Balance (in shares) at Dec. 31, 2017		283,110,183
Balance at Dec. 31, 2017	$ 2,298,842	$ 2,831	$ 4,164,562	$ (1,765,966)	$ (103,989)	$ 1,404
Increase (Decrease) in Stockholders' Equity
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation (in shares)		364,736
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation	1,432	$ 4	1,428
Change in value of redeemable noncontrolling interests			(117)
Issuance of shares								$ 76,192	$ 22	$ 76,170	$ 8,716	$ 2	$ 8,714
Issuance of shares (in shares)									2,175,000			273,486
Change in value of redeemable noncontrolling interests	(117)						$ 117
Parent cash dividends declared	(169,044)			(169,044)
Foreign currency translation adjustment	30,246				30,092	154
Change in Fair Value of Interest Rate Swap Agreements	(185)				(185)
Net income (loss)	45,152			44,684		(30)
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	44,654
Noncontrolling interests dividends	0
Balance at Mar. 31, 2018	$ 2,261,275	$ 2,859	4,250,757	(1,919,787)	(74,082)	1,528
Balance (in shares) at Mar. 31, 2018		285,923,405
Redeemable Noncontrolling Interest at Dec. 31, 2017							91,418
Increase (Decrease) in Temporary Equity [Roll Forward]
Temporary Equity, Foreign Currency Translation Adjustments							1,405
Temporary Equity, Net Income							498
Temporary Equity, Accretion of Dividends							(561)
Redeemable Noncontrolling Interest at Mar. 31, 2018							92,877
Balance (in shares) at Dec. 31, 2018	286,321,009	286,321,009
Balance at Dec. 31, 2018	$ 1,885,589	$ 2,863	4,263,348	(2,116,367)	(265,664)	1,409
Increase (Decrease) in Stockholders' Equity
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation (in shares)		508,845
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation	2,923	$ 5	2,918
Change in value of redeemable noncontrolling interests	(1,288)		(1,288)				1,288
Parent cash dividends declared	(176,460)			(176,460)
Foreign currency translation adjustment	17,378				17,378	0
Change in Fair Value of Interest Rate Swap Agreements	(2,674)				(2,674)
Net income (loss)	30,452
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	29,485			29,561		(76)
Noncontrolling interests dividends	0
Balance at Mar. 31, 2019	$ 1,760,734	$ 2,868	$ 4,264,978	(2,257,485)	$ (250,960)	$ 1,333
Balance (in shares) at Mar. 31, 2019	286,829,854	286,829,854
Redeemable Noncontrolling Interest at Dec. 31, 2018	$ 70,532						70,532
Increase (Decrease) in Temporary Equity [Roll Forward]
Temporary Equity, Foreign Currency Translation Adjustments							813
Temporary Equity, Net Income							967
Temporary Equity, Accretion of Dividends							(498)
Redeemable Noncontrolling Interest at Mar. 31, 2019	73,102						$ 73,102
Increase (Decrease) in Stockholders' Equity
Cumulative-effect adjustment for adoption of ASU 2014-09 (see Note 2.c.) | Accounting Standards Update 2016-02 [Member]	$ 5,781			$ 5,781

XML

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash Flows from Operating Activities:
Net income (loss)	$ 30,452	$ 45,152
Loss (income) from discontinued operations	24	462
Adjustments to reconcile net income (loss) to cash flows from operating activities:
Depreciation	114,611	113,432
Amortization (includes amortization of deferred financing costs and discounts of $4,108 and $3,553 for the three months ended March 31, 2019 and 2018, respectively)	51,980	50,699
Revenue reduction associated with amortization of customer inducements and above- and below-market leases	3,645	3,664
Stock-based compensation expense	8,519	7,384
Provision (benefit) for deferred income taxes	1,423	(387)
Loss (gain) on disposal/write-down of property, plant and equipment, net (see Note 2.l.)	(602)	1,130
Foreign currency transactions and other, net	11,707	23,530
(Increase) decrease in assets	(33,138)	(74,884)
(Decrease) increase in liabilities	(72,758)	(76,354)
Cash Flows from Operating Activities - Continuing Operations	117,067	91,568
Cash Flows from Operating Activities - Discontinued Operations	0	0
Cash Flows from Operating Activities	117,067	91,568
Cash Flows from Investing Activities:
Capital expenditures (see Liquidity and Capital Resources section of Management's Discussion & Analysis of Financial Condition and Results of Operations)	(184,765)	(95,605)
Cash paid for acquisitions, net of cash acquired	(39,423)	(1,428,974)
Acquisition of customer relationships	(23,934)	(12,602)
Customer inducements	(2,817)	(130)
Contract fulfillment costs and third-party commissions	(41,161)	(5,314)
Investments in joint ventures (see Note 9)	(19,222)	0
Proceeds from sales of property and equipment and other, net	105	(19,387)
Cash Flows from Investing Activities—Continuing Operations	(311,217)	(1,562,012)
Cash Flows from Investing Activities—Discontinued Operations	0	0
Cash Flows from Investing Activities	(311,217)	(1,562,012)
Cash Flows from Financing Activities:
Repayment of revolving credit facility, term loan facilities and other debt	(1,351,242)	(4,410,656)
Proceeds from revolving credit facility, term loan facilities and other debt	1,723,462	5,496,491
Debt repayment and equity distribution to noncontrolling interests	(498)	(561)
Parent cash dividends	(178,023)	(169,006)
Net proceeds associated with the Over-Allotment Option	0	76,192
Net proceeds associated with the At the Market (ATM) Program	0	8,716
Net (payments) proceeds associated with employee stock-based awards	(5,963)	(5,950)
Payment of debt financing and stock issuance costs	0	(9,974)
Net Cash Provided by (Used in) Financing Activities, Continuing Operations	187,736	985,252
Cash Flows from Financing Activities—Discontinued Operations	0	0
Net Cash Provided by (Used in) Financing Activities	187,736	985,252
Effect of Exchange Rates on Cash and Cash Equivalents	2,404	1,984
Increase (Decrease) in cash and cash equivalents	(4,010)	(483,208)
Cash and cash equivalents, including Restricted Cash, beginning of period	165,485	925,699
Cash and cash equivalents, including Restricted Cash, end of period	161,475	442,491
Supplemental Information:
Cash Paid for Interest	136,667	122,027
Cash Paid for Income Taxes, Net	15,141	22,292
Non-Cash Investing and Financing Activities:
Financing Leases (see Note 2.d.)	7,523	13,877
Accrued Capital Expenditures	75,824	36,760
Accrued Purchase Price and Other Holdbacks	1,042	149
Dividends Payable	$ 180,422	$ 172,140

XML

CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Cash Flows [Abstract]
Deferred financing costs and discount included in Amortization	$ 4,108	$ 3,553

XML

General

3 Months Ended

Mar. 31, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

General

General

The interim condensed consolidated financial statements are presented herein and, in the opinion of management, reflect all adjustments of a normal recurring nature necessary for a fair presentation. Interim results are not necessarily indicative of results for a full year. Iron Mountain Incorporated, a Delaware corporation ("IMI"), and its subsidiaries ("we" or "us") provide storage of physical records and data backup media, information management solutions and enterprise-class colocation and wholesale data center space that help organizations in various locations throughout North America, Europe, Latin America, Asia and Africa. We offer comprehensive records and information management services and data management services, along with the expertise and experience to address complex storage and information management challenges such as rising storage rental costs, legal and regulatory compliance and disaster recovery requirements. We provide secure and reliable data center facilities to protect digital information and ensure the continued operation of our customers’ information technology infrastructure, with flexible deployment options, including both colocation and wholesale space.

The unaudited condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the United States Securities and Exchange Commission (the "SEC"). Certain information and footnote disclosures normally included in the annual financial statements prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") have been omitted pursuant to those rules and regulations, but we believe that the disclosures included herein are adequate to make the information presented not misleading. The Condensed Consolidated Financial Statements and Notes thereto, which are included herein, should be read in conjunction with the Consolidated Financial Statements and Notes thereto for the year ended December 31, 2018 included in our Annual Report on Form 10-K filed with the SEC on February 14, 2019 (our "Annual Report").

We have been organized and have operated as a real estate investment trust for United States federal income tax purposes ("REIT") beginning with our taxable year ended December 31, 2014.

On January 10, 2018, we completed the acquisition of IO Data Centers, LLC ("IODC") (the "IODC Transaction"). See Note 3.

On January 1, 2019, we adopted Accounting Standards Update ("ASU") No. 2016-02, Leases (Topic 842), as amended ("ASU 2016-02"). See Note 2.d.

XML

Summary of Significant Accounting Policies

3 Months Ended

Mar. 31, 2019

Accounting Policies [Abstract]

Cash and Cash Equivalents

Summary of Significant Accounting Policies

This Note 2 to Notes to Condensed Consolidated Financial Statements provides information and disclosure regarding certain of our significant accounting policies and should be read in conjunction with Note 2 to Notes to Consolidated Financial Statements included in our Annual Report, which may provide additional information with regard to the accounting policies set forth herein and other of our significant accounting policies.

a.    Cash, Cash Equivalents and Restricted Cash

Cash and cash equivalents include cash on hand and cash invested in highly liquid short-term securities, which have remaining maturities at the date of purchase of less than 90 days. Cash and cash equivalents are carried at cost, which approximates fair value.

At March 31, 2019 and December 31, 2018, we had approximately $15,250 and $15,141, respectively, of restricted cash held by certain financial institutions related to bank guarantees.

b.    Goodwill and Other Intangible Assets and Liabilities

Goodwill

Since December 31, 2018, there have been no changes to our accounting polices related to the accounting for goodwill. As of March 31, 2019 and December 31, 2018, no factors were identified that would alter our October 1, 2018 goodwill impairment analysis.

Our reporting units as of December 31, 2018 are described in detail in Note 2.h. to Notes to Consolidated Financial Statements included in our Annual Report. On March 19, 2019, we divested the business included in our former Consumer Storage reporting unit, which had no goodwill associated with it at December 31, 2018 or at the date of the divestment. See Note 9 for additional information.

The goodwill associated with acquisitions completed during the first three months of 2019 (which are described in Note 3) has been incorporated into our reporting units as they existed as of December 31, 2018.

The changes in the carrying value of goodwill attributable to each reportable operating segment for the three months ended March 31, 2019 are as follows:

	North American Records and Information Management Business		North American Data Management Business		Western European Business		Other International Business		Global Data Center Business			Corporate and Other Business			Total Consolidated
Goodwill balance, net of accumulated amortization as of December 31, 2018	$	2,251,795	$	493,491	$	381,806	$	818,223	$	425,956		$	69,759		$	4,441,030
Deductible goodwill acquired during the year	5,501		—		—		—		—			—			5,501
Non-deductible goodwill acquired during the year	—		—		4,991		3,767		—			1,874			10,632
Fair value and other adjustments(1)	31		—		92		3,350		(871		)	(468		)	2,134
Currency effects	3,921		1,067		1,393		1,126		(1,566		)	140			6,081
Goodwill balance, net accumulated amortization as of March 31, 2019	$	2,261,248	$	494,558	$	388,282	$	826,466	$	423,519		$	71,305		$	4,465,378
Accumulated Goodwill Impairment Balance as of December 31, 2018	$	85,909	$	—	$	46,500	$	—	$	—		$	3,011		$	135,420
Accumulated Goodwill Impairment Balance as of March 31, 2019	$	85,909	$	—	$	46,500	$	—	$	—		$	3,011		$	135,420

_______________________________________________________________________________

(1) Total fair value and other adjustments primarily include $2,565 in net adjustments related to property, plant and equipment, customer relationships and data center lease-based intangible assets and deferred income taxes and other liabilities offset by $431 of cash received related to certain acquisitions completed in 2018.

Finite-lived Intangible Assets and Liabilities

Finite-lived intangible assets and liabilities are primarily comprised of customer relationship intangible assets, customer inducements and data center intangible assets and liabilities (which include data center in-place lease intangible assets, data center tenant relationship intangible assets, data center above-market in-place lease intangible assets and data center below-market in-place lease intangible assets). Since December 31, 2018, there have been no changes to our accounting policies related to the accounting for any of our finite-lived intangible assets and liabilities as disclosed in Note 2.i. to Notes to Consolidated Financial Statements included in our Annual Report.

The gross carrying amount and accumulated amortization of our finite-lived intangible assets as of March 31, 2019 and December 31, 2018 are as follows:

	March 31, 2019							December 31, 2018
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Assets:
Customer relationship intangible assets	$	1,754,794	$	(482,971	)	$	1,271,823	$	1,718,919	$	(455,705	)	$	1,263,214
Customer inducements	51,405		(28,711		)	22,694		56,478		(34,181		)	22,297
Data center lease-based intangible assets(1)	265,834		(65,013		)	200,821		271,818		(50,807		)	221,011
Third-party commissions asset(2)	30,861		(737		)	30,124		30,071		(1,089		)	28,982
	$	2,102,894	$	(577,432	)	$	1,525,462	$	2,077,286	$	(541,782	)	$	1,535,504
Liabilities:
Data center below-market leases	$	12,715	$	(2,451	)	$	10,264	$	12,318	$	(1,642	)	$	10,676

_______________________________________________________________________________

(1) Includes data center in-place lease intangible assets, data center tenant relationship intangible assets and data center above-market in-place lease intangible assets.

(2) Third-party commissions asset is included in Other, a component of Other assets, net in the accompanying Condensed Consolidated Balance Sheets as of March 31, 2019 and December 31, 2018. The third-party commissions asset is primarily comprised of additional payments associated with the execution of future customer contracts through the one-year anniversary of the acquisition of IODC, as described in Note 3.

Other finite-lived intangible assets, including trade names, noncompetition agreements and trademarks, are capitalized and amortized and are included in depreciation and amortization in the accompanying Condensed Consolidated Statements of Operations for the three months ended March 31, 2019 and 2018. The other finite-lived intangible assets as of March 31, 2019 and December 31, 2018 are as follows:

	March 31, 2019							December 31, 2018
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Other finite-lived intangible assets (included in Other, a component of other assets, net)	$	20,290	$	(15,794	)	$	4,496	$	20,310	$	(14,798	)	$	5,512

Amortization expense associated with finite-lived intangible assets, revenue reduction associated with the amortization of customer inducements and net revenue reduction associated with the amortization of data center above-market leases and data center below-market leases for the three months ended March 31, 2019 and 2018 are as follows:

	Three Months Ended March 31,
	2019		2018
Amortization expense included in depreciation and amortization associated with:
Customer relationship and customer inducement intangible assets	$	27,881	$	28,806
Data center in-place leases and tenant relationships	12,609		10,838
Third-party commissions asset and other finite-lived intangible assets	757		1,185
Revenue reduction associated with amortization of:
Customer inducements	$	2,740	$	2,585
Data center above-market leases and data center below-market leases	905		1,079

c.    Revenues

Since December 31, 2018, there have been no changes to our accounting policies related to the accounting for revenues as disclosed in Note 2.l. to Notes to Consolidated Financial Statements included in our Annual Report.

The costs of the initial intake of customer records into physical storage ("Intake Costs") and capitalized commissions asset (collectively, "Contract Fulfillment Costs") as of March 31, 2019 and December 31, 2018 are as follows:

		March 31, 2019							December 31, 2018
Description	Location in Balance Sheet	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Intake Costs asset	Other (within Other Assets, Net)	$	36,155	$	(21,041	)	$	15,114	$	39,748	$	(24,504	)	$	15,244
Capitalized commissions asset	Other (within Other Assets, Net)	52,485		(24,923		)	27,562		58,424		(34,637		)	23,787

Amortization expense associated with the Intake Costs asset and capitalized commissions asset for the three months ended March 31, 2019 and 2018 are as follows:

	Three Months Ended March 31,
	2019		2018
Intake Costs asset	$	2,679	$	2,730
Capitalized commissions asset	3,946		3,587

Deferred revenue liabilities are reflected as follows in our Condensed Consolidated Balance Sheets:

Description	Location in Balance Sheet	March 31, 2019		December 31, 2018
Deferred revenue - Current	Deferred revenue	$	266,314	$	264,823
Deferred revenue - Long-term	Other Long-term Liabilities	25,625		26,401

Data Center Lessor Considerations

Our data center business features storage rental provided to customers at contractually specified rates over a fixed contractual period. Prior to January 1, 2019, our data center revenue contracts were accounted for in accordance with Accounting Standards Codification (“ASC”) No. 840, Leases ("ASC 840"). On January 1, 2019, we adopted ASU 2016-02, as described in more detail in Note 2.d. Beginning on January 1, 2019, our data center revenue contracts will be accounted for in accordance with ASU 2016-02. ASU 2016-02 provides a practical expedient which allows lessors to account for nonlease components (such as power and connectivity, in the case of our data center business) with the related lease component if both the timing and pattern of transfer are the same for nonlease components and the lease component, and the lease component would be classified as an operating lease. The single combined component is accounted for under ASU 2016-02 if the lease component is the predominant component and is accounted for under ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) ("ASU 2014-09"), if the nonlease components are the predominant components. We have elected to take this practical expedient. Storage rental revenue associated with our data center business was $59,718 for the three months ended March 31, 2019, which includes approximately $9,100 of revenue associated with power and connectivity. The revenue related to the service component of our data center business remains unchanged from the adoption of ASU 2016-02 and is recognized in the period the related services are provided. Our accounting treatment for data center revenue was not significantly impacted by the adoption of ASU 2016-02.

d. Leases

We lease facilities for certain warehouses, data centers and office space. We also have land leases, including those on which certain facilities are located. The majority of our leased facilities are classified as operating leases that, on average, have initial lease terms of five to 10 years, with one or more lease renewal options to extend the lease term. Our lease renewal option terms generally range from one to five years. The exercise of the lease renewal option is at our sole discretion and may contain fixed rent, fair market value based rent or Consumer Price Index rent escalation clauses. We include option periods in the lease term when our failure to renew the lease would result in an economic disincentive, thereby making it reasonably certain that we will renew the lease. We recognize straight line rental expense over the life of the lease and any fair market value or Consumer Price Index rent escalations are recognized as variable lease expense in the period in which the obligation is incurred. In addition, we lease certain vehicles and equipment. Vehicle and equipment leases have lease terms ranging from one to seven years.

In February 2016, the Financial Accounting Standards Board ("FASB") issued ASU 2016-02, Leases (Topic 842) which requires lessees to recognize assets and liabilities on the balance sheet for the rights and obligations created by all leases, both operating and financing (formerly referred to as capital leases under ASC 840). ASU 2016-02 requires certain qualitative and quantitative disclosures designed to give financial statement users information on the amount, timing, and uncertainty of cash flows arising from leases.

We adopted ASU 2016-02 on January 1, 2019 on a modified retrospective basis under which we recognized and measured leases existing at, or entered into after, the beginning of the period of adoption. Therefore, we applied ASC 840 to all earlier comparative periods (prior to the adoption of ASU 2016-02), including disclosures, and recognized the effects of applying ASU 2016-02 as a cumulative-effect adjustment to retained earnings as of January 1, 2019, the effective date of the standard. As such, the comparative Condensed Consolidated Balance Sheet as of December 31, 2018 has not been restated to reflect the adoption of ASU 2016-02. Accordingly, the majority of the amount presented as deferred rent liabilities on our Consolidated Balance Sheet as of December 31, 2018 is now included in the calculation of operating lease right-of-use assets and any remaining amounts are now classified within other liability line items on our Condensed Consolidated Balance Sheet as of March 31, 2019. The transition guidance associated with ASU 2016-02 also permitted certain practical expedients. We elected the "package of 3" practical expedients permitted under the transition guidance which, among other things, allowed us to carryforward our historical lease classifications. We also adopted an accounting policy which provides that leases with an initial term of 12 months or less will not be included within the lease right-of-use assets and lease liabilities recognized on our Condensed Consolidated Balance Sheets after the adoption of ASU 2016-02. We will continue to recognize the lease payments for those leases with an initial term of 12 months or less in the Consolidated Statements of Operations on a straight-line basis over the lease term.

The lease right-of-use assets and related lease liabilities are classified as either operating or financing. Lease right-of-use assets are calculated as the net present value of future payments plus any capitalized initial direct costs less any tenant improvements or lease incentives. Lease liabilities are calculated as the net present value of future payments. In calculating the present value of the lease payments, we will utilize the rate stated within the lease (in the limited circumstances when such rate is available) or, if no rate is explicitly stated, we have elected to utilize a rate that reflects our securitized incremental borrowing rate by geography for the lease term. In July 2018, the FASB issued ASU 2018-11, Leases - Targeted Improvements ("ASU 2018-11"). ASU 2018-11 provides a practical expedient which allows lessees to account for nonlease components (which include common area maintenance, taxes, and insurance) with the related lease component. Any variable nonlease components are not included within the lease right-of-use asset and lease liability on the Condensed Consolidated Balance Sheets, and instead, are reflected as an expense in the period incurred. We have elected to take this practical expedient upon adoption of ASU 2016-02.

At January 1, 2019, we recognized the cumulative effect of initially applying ASU 2016-02 as an adjustment to the opening balance of (distributions in excess of earnings) earnings in excess of distributions, resulting in an increase of approximately $5,800 to stockholders' equity due to certain build to suit leases that were accounted for as financing leases under ASC 840, Leases,but are accounted for as operating leases under ASU 2016-02 at January 1, 2019.

Operating and financing lease right-of-use assets and lease liabilities as of March 31, 2019 and January 1, 2019 (date of adoption of ASU 2016-02) are as follows:

Description	Location in Balance Sheet	March 31, 2019		January 1, 2019 (Date of Adoption of ASU 2016-02)
Assets:
Operating lease right-of-use assets(1)	Operating lease right-of-use assets	$	1,791,536	$	1,825,721
Financing lease right-of-use assets, net of accumulated depreciation(2)	Property, plant and equipment, net	351,750		361,078
Total		$	2,143,286	$	2,186,799
Liabilities:
Current
Operating lease liabilities	Accrued expenses and other current liabilities	$	206,286	$	209,911
Financing lease liabilities	Current portion of long-term debt	51,222		50,437
Total current lease liabilities		257,508		260,348
Long-term
Operating lease liabilities	Long-term operating lease liabilities, net of current portion	1,656,659		1,685,771
Financing lease liabilities	Long-term Debt, net of current portion	338,728		350,263
Total long-term lease liabilities		1,995,387		2,036,034
Total		$	2,252,895	$	2,296,382

______________________________________________________________

(1) At March 31, 2019, these assets are comprised of approximately 98% real estate related assets (which include land, buildings and racking) and 2% non-real estate related assets (which include warehouse equipment, vehicles, furniture and fixtures and computer hardware and software).

(2) At March 31, 2019, these assets are comprised of approximately 66% real estate related assets and 34% non-real estate related assets.

The components of the lease expense for the three months ended March 31, 2019 is as follows:

Description	Location in Statement of Operations	Amount
Operating lease cost(1)	Cost of sales and Selling, general and administrative	$	111,906
Financing lease cost:
Depreciation of financing lease right-of-use assets	Depreciation and amortization	$	16,329
Interest expense for financing lease liabilities	Interest expense, net	6,142
Total financing lease cost		$	22,471

______________________________________________________________

(1) Of the $111,906 of operating lease cost incurred for the three months ended March 31, 2019, $108,601 is included within Cost of sales and $3,305 is included within Selling, general and administrative expenses. Operating lease cost includes variable lease costs of $25,489.

We sublease certain real estate to third parties. The sublease income recognized for the three months ended March 31, 2019 is $3,047.

Weighted average remaining lease terms and discount rates as of March 31, 2019 are as follows:

Remaining Lease Term:
Operating leases	11.1 Years
Financing leases	11.0 Years
Discount Rate:
Operating leases	7.1%
Financing leases	5.7%

The estimated minimum future lease payments as of December 31, 2018, are as follows:

Year	Operating Leases(1)		Sublease Income			Capital Leases(1)(2)
2019	$	323,454	$	(7,525	)	$	80,513
2020	293,276		(7,200		)	71,335
2021	267,379		(7,063		)	61,269
2022	246,128		(6,694		)	52,832
2023	221,808		(6,409		)	44,722
Thereafter	1,287,807		(6,279		)	377,750
Total minimum lease payments	2,639,852		$	(41,170	)	688,421
Less amounts representing interest						(241,248		)
Present value of finance lease obligations						$	447,173

The estimated minimum future lease payments as of March 31, 2019, are as follows:

Year	Operating Leases(1)			Sublease Income			Financing Leases(1)
2019 (excluding the three months ended March 31, 2019)	$	251,699		$	(6,039	)	$	59,411
2020	308,267			(7,337		)	68,333
2021	280,931			(7,228		)	59,710
2022	257,598			(6,851		)	49,997
2023	234,035			(6,548		)	39,643
Thereafter	1,409,241			(6,922		)	287,609
Total minimum lease payments	2,741,771			$	(40,925	)	564,703
Less amounts representing interest or imputed interest	(878,826		)				(174,753		)
Present value of lease obligations	1,862,945						$	389,950

_______________________________________________________________________________

(1) Estimated minimum future lease payments exclude variable common area maintenance charges, insurance and taxes. Differences in estimated lease payments between December 31, 2018 and March 31, 2019 are primarily related to adjustments to account for certain build to suit leases that were accounted for as financing obligations under ASC 840 but are accounted for as operating leases under ASU 2016-02 and foreign currency exchange rate impacts.

(2) Includes capital lease and financing obligations associated with build to suit lease transactions at December 31, 2018.

As of March 31, 2019, we do not have any material operating or financing leases that are signed but have not yet commenced and we have certain leases with related parties which are not material to our consolidated financial statements.

Other information: Supplemental cash flow information relating to our leases for the three months ended March 31, 2019 is as follows:

Cash paid for amounts included in measurement of lease liabilities:	Three Months Ended March 31, 2019
Operating cash flows used in operating leases	$	83,676
Financing cash flows used in financing leases	$	16,675
Non-cash items:
Operating lease modifications and reassessments	$	1,842
New operating leases (including acquisitions)	$	21,535
Financing lease modifications and reassessments	$	—
New financing leases	$	7,523

e.    Stock-Based Compensation

We record stock-based compensation expense, utilizing the straight-line method, for the cost of stock options, restricted stock units ("RSUs"), performance units ("PUs") and shares of stock issued under our employee stock purchase plan (together, "Employee Stock-Based Awards"). There have been no significant changes to our accounting policies, assumptions and valuation methodologies related to the accounting for our Employee Stock-Based Awards as disclosed in Note 2.n. to Notes to Consolidated Financial Statements included in our Annual Report.

For our Employee Stock-Based Awards made on or after February 20, 2019, we have included the following retirement provision: Upon an employee’s retirement on or after attaining age 58, if the sum of (i) the award recipient’s age at retirement and (ii) the award recipient’s years of service with the company totals at least 70, the award recipient is entitled to continued vesting of any outstanding Employee Stock-Based Awards which include the 2019 Retirement Criteria subsequent to their retirement, provided that, for awards granted in the year of retirement, their retirement occurs on or after July 1st (the “2019 Retirement Criteria”). Accordingly, (i) grants of Employee Stock-Based Awards to an employee who has met the 2019 Retirement Criteria on or before the date of grant, or will meet the Retirement Criteria before July 1^st of the year of the grant, will be expensed between the date of grant and July 1^st of the grant year and (ii) grants of Employee Stock-Based Awards to employees who will meet the 2019 Retirement Criteria during the award’s normal vesting period will be expensed between the date of grant and the date upon which the award recipient meets the 2019 Retirement Criteria. Stock options and RSUs granted to recipients who meet the 2019 Retirement Criteria will continue vesting on the original vesting schedule, and the stock options will remain exercisable up to three years after retirement, or the original expiration date of the stock options, if earlier. PUs granted to recipients who meet the 2019 Retirement Criteria will continue to vest and be delivered in accordance with the original vesting schedule of the applicable PU award and remain subject to the same performance conditions.

Stock-based compensation expense for Employee Stock-Based Awards for the three months ended March 31, 2019 and 2018 was $8,519 ($7,935 after tax or $0.03 per basic and diluted share) and $7,384 ($6,833 after tax or $0.02 per basic and diluted share), respectively, the substantial majority of which is included in Selling, general and administrative expenses in the accompanying Condensed Consolidated Statements of Operations. As of March 31, 2019, unrecognized compensation cost related to the unvested portion of our Employee Stock-Based Awards was $72,353 and is expected to be recognized over a weighted-average period of 2.2 years.

Stock Options

A summary of stock option activity for the three months ended March 31, 2019 is as follows:

	Stock Options
Outstanding at December 31, 2018	4,271,834
Granted	920,706
Exercised	(99,334	)
Forfeited	(6,007	)
Expired	(9,629	)
Outstanding at March 31, 2019	5,077,570
Options exercisable at March 31, 2019	3,258,982
Options expected to vest	1,691,146

Restricted Stock Units

The fair value of RSUs vested during the three months ended March 31, 2019 and 2018 is as follows:

	Three Months Ended March 31,
	2019		2018
Fair value of RSUs vested	$	15,333	$	15,330

A summary of RSU activity for the three months ended March 31, 2019 is as follows:

	RSUs
Non-vested at December 31, 2018	1,196,566
Granted	621,281
Vested	(453,167	)
Forfeited	(18,075	)
Non-vested at March 31, 2019	1,346,605

Performance Units

The fair value of earned PUs that vested during the three months ended March 31, 2019 and 2018 is as follows:

	Three Months Ended March 31,
	2019		2018
Fair value of earned PUs that vested	$	6,503	$	3,033

A summary of PU activity for the three months ended March 31, 2019 is as follows:

	Original PU Awards		PU Adjustment(1)		Total PU Awards
Non-vested at December 31, 2018	967,049		(299,948	)	667,101
Granted	380,856		—		380,856
Vested	(169,523	)	—		(169,523	)
Forfeited/Performance or Market Conditions Not Achieved	(4,816	)	(14,850	)	(19,666	)
Non-vested at March 31, 2019	1,173,566		(314,798	)	858,768

_______________________________________________________________________________

(1) Represents an increase or decrease in the number of original PUs awarded based on either the final performance criteria or market condition achievement at the end of the performance period of such PUs or a change in estimated awards based on the forecasted performance against the predefined targets.

As of March 31, 2019, we expected 100% achievement of the predefined revenue, return on invested capital and Adjusted EBITDA (as defined in Note 6) targets associated with the awards of PUs made in 2019, 2018 and 2017.

f.    Income (Loss) Per Share—Basic and Diluted

Basic income (loss) per common share is calculated by dividing income (loss) by the weighted average number of common shares outstanding. The calculation of diluted income (loss) per share is consistent with that of basic income (loss) per share, but gives effect to all potential common shares (that is, securities such as stock options, RSUs or PUs) that were outstanding during the period, unless the effect is antidilutive.

The calculation of basic and diluted income (loss) per share for the three months ended March 31, 2019 and 2018 is as follows:

	Three Months Ended March 31,
	2019			2018
Income (loss) from continuing operations	$	30,476		$	45,614
Less: Net income (loss) attributable to noncontrolling interests	891			468
Income (loss) from continuing operations (utilized in numerator of Earnings Per Share calculation)	$	29,585		$	45,146
(Loss) income from discontinued operations, net of tax	$	(24	)	$	(462	)
Net income (loss) attributable to Iron Mountain Incorporated	$	29,561		$	44,684
Weighted-average shares—basic	286,528,000			285,259,000
Effect of dilutive potential stock options	231,402			249,564
Effect of dilutive potential RSUs and PUs	732,421			484,314
Weighted-average shares—diluted	287,491,823			285,992,878
Earnings (losses) per share—basic:
Income (loss) from continuing operations	$	0.10		$	0.16
(Loss) income from discontinued operations, net of tax	—			—
Net income (loss) attributable to Iron Mountain Incorporated(1)	$	0.10		$	0.16
Earnings (losses) per share—diluted:
Income (loss) from continuing operations	$	0.10		$	0.16
(Loss) income from discontinued operations, net of tax	—			—
Net income (loss) attributable to Iron Mountain Incorporated(1)	$	0.10		$	0.16
Antidilutive stock options, RSUs and PUs, excluded from the calculation	3,985,161			3,242,141

_______________________________________________________________________________

(1) Columns may not foot due to rounding.

g.    Income Taxes

We provide for income taxes during interim periods based on our estimate of the effective tax rate for the year. Our estimate of the effective tax rates for the years ending December 31, 2019 and 2018 reflect the impact of the U.S. tax reform legislation, commonly referred to as the Tax Cuts and Jobs Act (the “Tax Reform Legislation”). See Note 7 to Notes to Consolidated Financial Statements included in our Annual Report for additional information regarding the impact the Tax Reform Legislation had on us. Discrete items and changes in our estimate of the annual effective tax rate are recorded in the period they occur. Our effective tax rate is subject to variability in the future due to, among other items: (1) changes in the mix of income between our qualified REIT subsidiaries ("QRSs") and our domestic taxable REIT subsidiaries ("TRSs"), as well as among the jurisdictions in which we operate; (2) tax law changes; (3) volatility in foreign exchange gains and losses; (4) the timing of the establishment and reversal of tax reserves; and (5) our ability to utilize net operating losses that we generate.

Our effective tax rates for the three months ended March 31, 2019 and 2018 is as follows:

	Three Months Ended March 31,
	2019(1)		2018(2)
Effective Tax Rate	25.7	%	2.5	%

_______________________________________________________________________________

(1) The primary reconciling items between the federal statutory tax rate of 21.0% and our overall effective tax rate for the three months ended March 31, 2019 were the benefit derived from the dividends paid deduction and the impact of differences in the tax rates at which our foreign earnings are subject, including foreign exchange gains and losses in different jurisdictions with different tax rates.  

(2) The primary reconciling items between the federal statutory tax rate of 21.0% and our overall effective tax rate for the three months ended March 31, 2018 were the benefit derived from the dividends paid deduction, a discrete tax benefit of approximately $14,000 associated with the resolution of a tax matter and the impact of differences in the tax rates at which our foreign earnings are subject, including foreign exchange gains and losses in different jurisdictions with different tax rates.

h.    Fair Value Measurements

Our financial assets or liabilities that are carried at fair value are required to be measured using inputs from the three levels of the fair value hierarchy. A financial asset or liability's classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement.

The three levels of the fair value hierarchy are as follows:

Level 1—Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that we have the ability to access at the measurement date.

Level 2—Inputs include quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (i.e., interest rates, yield curves, etc.), and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs).

Level 3—Unobservable inputs that reflect our assumptions about the assumptions that market participants would use in pricing the asset or liability.

The assets and liabilities carried at fair value measured on a recurring basis as of March 31, 2019 and December 31, 2018, respectively, are as follows:

			Fair Value Measurements at March 31, 2019 Using
Description	Total Carrying Value at March 31, 2019		Quoted prices in active markets (Level 1)			Significant other observable inputs (Level 2)			Significant unobservable inputs (Level 3)
Money Market Funds(1)	$	1,739	$	—		$	1,739		$	—
Trading Securities	10,160		9,490		(2)	670		(3)	—
Derivative Assets (4)	23		—			23			—
Derivative Liabilities(4)	109		—			109			—
Interest Rate Swap Agreements Liabilities(5)	3,647		—			3,647			—

			Fair Value Measurements at December 31, 2018 Using
Description	Total Carrying Value at December 31, 2018		Quoted prices in active markets (Level 1)			Significant other observable inputs (Level 2)			Significant unobservable inputs (Level 3)
Time Deposits(1)	$	956	$	—		$	956		$	—
Trading Securities	10,753		10,248		(2)	505		(3)	—
Derivative Assets(4)	93		—			93			—
Interest Rate Swap Agreements Liabilities(5)	973		—			973			—

_______________________________________________________________________________

(1) Money market funds and time deposits are measured based on quoted prices for similar assets and/or subsequent transactions.

(2) Certain trading securities are measured at fair value using quoted market prices.

(3) Certain trading securities are measured based on inputs other than quoted market prices that are observable.

(4) Derivative assets and liabilities relate to short-term (six months or less) foreign currency contracts that we have entered into to hedge certain of our foreign exchange intercompany exposures. We calculate the value of such forward contracts by adjusting the spot rate utilized at the balance sheet date for translation purposes by an estimate of the forward points observed in active markets. As of March 31, 2019, we had outstanding forward contracts to (i) purchase 4,000 Euros and sell $4,610 United States dollars and (ii) purchase $4,515 United States dollars and sell 4,000 Euros. As of December 31, 2018, we had outstanding forward contracts to purchase 29,000 Euros and sell $33,374 United States dollars. We have not designated any of the forward contracts we have entered into as hedges.

(5) We have entered into interest rate swap agreements to limit our exposure to changes in interest rates on a portion of our floating rate indebtedness. As of March 31, 2019 and December 31, 2018, we have $350,000 in notional value of interest rate swap agreements outstanding, which expire in March 2022. Under the interest rate swap agreements, we receive variable rate interest payments associated with the notional amount of each interest rate swap, based upon one-month LIBOR, in exchange for the payment of fixed interest rate payments (at the fixed rate interest specified in the interest rate swap agreements). We have designated these interest rate swaps as cash flow hedges. Unrealized gains are recognized as assets while unrealized losses are recognized as liabilities. The fair value of the interest rate swaps are estimated using industry standard valuation models using market-based observable inputs, including interest rate curves.

Disclosures are required in the financial statements for items measured at fair value on a non-recurring basis. There were no material items that are measured at fair value on a non-recurring basis at March 31, 2019 and December 31, 2018, other than those disclosed in Note 2.s. to Notes to Consolidated Financial Statements included in our Annual Report, those acquired in acquisitions that occurred during the three months ended March 31, 2019 and our investment in Makespace LLC (as disclosed in Note 9), all of which are based on Level 3 inputs.

The fair value of our long-term debt, which was determined based on either Level 1 inputs or Level 3 inputs, is disclosed in Note 4. Long-term debt is measured at cost in our Condensed Consolidated Balance Sheets as of March 31, 2019 and December 31, 2018.

i.    Accumulated Other Comprehensive Items, Net

The changes in accumulated other comprehensive items, net for the three months ended March 31, 2019 and 2018 are as follows:

	Three Months Ended March 31,
	2019									2018
	Foreign Currency Translation Adjustments			Fair Value Adjustments for Interest Rate Swap Agreements			Total			Foreign Currency Translation Adjustments			Fair Value Adjustments for Interest Rate Swap Agreements			Total
Beginning of Period	$	(264,691	)	$	(973	)	$	(265,664	)	$	(103,989	)	$	—		$	(103,989	)
Other comprehensive income (loss):
Foreign currency translation adjustments(1)	17,378			—			17,378			30,092			—			30,092
Fair value adjustments for interest rate swap agreements	—			(2,674		)	(2,674		)	—			(185		)	(185		)
Total other comprehensive income (loss)	17,378			(2,674		)	14,704			30,092			(185		)	29,907
End of Period	$	(247,313	)	$	(3,647	)	$	(250,960	)	$	(73,897	)	$	(185	)	$	(74,082	)

______________________________________________________________

(1) This amount includes foreign exchange (gains) losses of $(6,141) and $5,635 for the three months ended March 31, 2019 and 2018, respectively, related to the change in fair value of the portion of our Euro Notes (as defined and discussed more fully in Note 4) designated as a hedge of net investment of certain of our Euro denominated subsidiaries. For the three months ended March 31, 2019, we designated, on average, 271,146 Euros of our Euro Notes as a hedge of net investment of certain of our Euro denominated subsidiaries. For the three months ended March 31, 2018, we designated, on average, 164,244 Euros of our Euro Notes as a hedge of net investment of certain of our Euro denominated subsidiaries. As of March 31, 2019, cumulative net gains of $20,399 net of tax, are recorded in accumulated other comprehensive items, net associated with this net investment hedge.

j.    Other Expense (Income), Net

Other expense (income), net for the three months ended March 31, 2019 and 2018 consists of the following:

	Three Months Ended March 31,
	2019			2018
Foreign currency transaction losses (gains), net	$	17,697		$	21,785
Other, net	(2,487		)	(1,634		)
	$	15,210		$	20,151

The gain or loss on foreign currency transactions, calculated as the difference between the historical exchange rate and the exchange rate at the applicable measurement date, include gains or losses related to (i) borrowings in certain foreign currencies under our Revolving Credit Facility (as defined and discussed more fully in Note 4), (ii) our Euro Notes, (iii) certain foreign currency denominated intercompany obligations of our foreign subsidiaries to us and between our foreign subsidiaries, which are not considered permanently invested, and (iv) amounts that are paid or received on the net settlement amount from forward contracts (as more fully discussed in Note 2.h.).

Other, net for the three months ended March 31, 2019 is primarily comprised of a gain on sale resulting from the Consumer Storage Transaction (as defined and discussed more fully in Note 9) of approximately $4,200. Other, net for the three months ended March 31, 2019 also includes the change in estimated fair value of the noncontrolling interests associated with our business in India, which are accounted for as mandatorily redeemable noncontrolling interests.

k.    New Accounting Pronouncements

In August 2018, the FASB issued ASU No. 2018-15, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract (a consensus of the FASB Emerging Issues Task Force) ("ASU 2018-15"). ASU 2018-15 aligns the accounting for costs incurred to implement a cloud computing arrangement that is a service arrangement with the guidance on capitalizing costs associated with developing or obtaining internal-use software. We adopted ASU 2018-15 on January 1, 2019. ASU 2018-15 did not have a material impact on our consolidated financial statements.

In February 2016, the FASB issued ASU 2016-02. We adopted ASU 2016-02 on January 1, 2019 on a modified retrospective basis. See Note 2.d. for information regarding the impact of the adoption of ASU 2016-02 on our consolidated financial statements.

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Acquisitions

3 Months Ended

Mar. 31, 2019

Business Combinations [Abstract]

Acquisitions

We account for acquisitions using the acquisition method of accounting, and, accordingly, the assets and liabilities acquired are recorded at their estimated fair values and the results of operations for each acquisition have been included in our consolidated results from their respective acquisition dates.

Acquisitions Completed During the Three Months Ended March 31, 2019

In order to enhance our existing operations in the United States, the United Kingdom and Switzerland and to expand our operations into Bulgaria, we completed the acquisition of four storage and records management companies and one art storage company for total cash consideration of approximately $31,900.

Purchase Price Allocation

A summary of the cumulative consideration paid and the preliminary allocation of the purchase price paid for all of our 2019 acquisitions through March 31, 2019 is as follows:

	Three Months Ended March 31, 2019
Cash Paid (gross of cash acquired)(1)	$	34,198
Purchase Price Holdbacks and Other	1,042
Total Consideration	35,240
Fair Value of Identifiable Assets Acquired:
Cash	2,273
Accounts Receivable, Prepaid Expenses and Other Assets	2,845
Property, Plant and Equipment(2)	4,039
Customer Relationship Intangible Assets	13,589
Operating Lease Right-of-Use Assets	10,541
Accounts Payable, Accrued Expenses and Other Liabilities	(2,065		)
Operating Lease Liabilities	(10,541		)
Deferred Income Taxes	(1,574		)
Total Fair Value of Identifiable Net Assets Acquired	19,107
Goodwill Initially Recorded(3)	$	16,133

_______________________________________________________________________________

(1) Included in cash paid for acquisitions in the Condensed Consolidated Statement of Cash Flows for the three months ended March 31, 2019 is net cash acquired of $2,273 and contingent and other payments, net of $7,498 related to acquisitions made in previous years.

(2) Consists primarily of leasehold improvements, racking structures and warehouse equipment. These assets are depreciated using the straight-line method with the useful lives as noted in Note 2.f. to Notes to Consolidated Financial Statements included in our Annual Report.

(3) The goodwill associated with acquisitions is primarily attributable to the assembled workforce, expanded market opportunities and costs and other operating synergies anticipated upon the integration of the operations of us and the acquired businesses.

See Note 6 to Notes to Consolidated Financial Statements included in our Annual Report for additional information regarding our allocations of the purchase price for acquisitions. The preliminary purchase price allocations that are not finalized as of March 31, 2019 primarily relate to the final assessment of the fair values of intangible assets and liabilities (primarily customer relationship intangible assets and data center lease-based intangible assets), property, plant and equipment (primarily building, building improvements, data center infrastructure and racking structures), right-of-use assets and liabilities associated with acquired operating leases, contingencies and income taxes (primarily deferred income taxes), primarily associated with the EvoSwitch Transaction (as defined in Note 6 to Notes to Consolidated Financial Statements included in our Annual Report), as well as other acquisitions we closed in 2019.

As the valuation of certain assets and liabilities for purposes of purchase price allocations are preliminary in nature, they are subject to adjustment as additional information is obtained about the facts and circumstances regarding these assets and liabilities that existed at the acquisition date. Any adjustments to our estimates of purchase price allocation will be made in the periods in which the adjustments are determined and the cumulative effect of such adjustments will be calculated as if the adjustments had been completed as of the acquisition dates. Adjustments recorded during the three months ended March 31, 2019 were not material to our results from operations.

Acquisition of IO Data Centers in 2018

On January 10, 2018, we completed the IODC Transaction. At the closing of the IODC Transaction, we paid approximately $1,347,000. In February 2019, we paid approximately $31,000 in additional purchase price associated with the execution of customer contracts from the closing through the one-year anniversary of the IODC Transaction, which was accrued at December 31, 2018. This amount, net of amortization, is reported as a third-party commissions asset as a component of Other within Other assets, net, in our Condensed Consolidated Balance Sheets at March 31, 2019 and December 31, 2018.

The unaudited consolidated pro forma financial information (the "Pro Forma Financial Information") below summarizes the combined results of us and IODC on a pro forma basis as if the IODC Transaction had occurred on January 1, 2017. The Pro Forma Financial Information is presented for informational purposes and is not necessarily indicative of the results of operations that would have been achieved if the acquisition had taken place on January 1, 2017. The Pro Forma Financial Information, for the period presented, includes purchase accounting adjustments (including amortization expenses from acquired intangible assets and depreciation of acquired property, plant and equipment). We and IODC collectively incurred $28,064 of operating expenditures to complete the IODC Transaction (including advisory and professional fees). These operating expenditures have been reflected within the results of operations in the Pro Forma Financial Information as if they were incurred on January 1, 2017.

	Three Months Ended March 31, 2018
Total Revenues	$	1,045,948
Income from Continuing Operations	$	55,566
Per Share Income from Continuing Operations - Basic	$	0.20
Per Share Income from Continuing Operations - Diluted	$	0.19

In addition to our acquisition of IODC, we completed certain other acquisitions during the first three months of 2019 and in fiscal year 2018. The Pro Forma Financial Information does not reflect these acquisitions due to the insignificant impact of these acquisitions on our consolidated results of operations.

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Debt

3 Months Ended

Mar. 31, 2019

Debt Disclosure [Abstract]

Debt

Long-term debt is as follows:

	March 31, 2019											December 31, 2018
	Debt (inclusive of discount)			Unamortized Deferred Financing Costs			Carrying Amount			Fair Value		Debt (inclusive of discount)				Unamortized Deferred Financing Costs			Carrying Amount			Fair Value
Revolving Credit Facility(1)	$	1,139,566		$	(13,332	)	$	1,126,234		$	1,139,566	$	793,832			$	(14,117	)	$	779,715		$	793,832
Term Loan A(1)	237,500			—			237,500			237,500		240,625				—			240,625			240,625
Term Loan B(2)	691,476			(8,430		)	683,046			670,478		693,169				(8,742		)	684,427			660,013
Australian Dollar Term Loan (the "AUD Term Loan")(3)	234,000			(2,893		)	231,107			235,587		233,955				(3,084		)	230,871			235,645
UK Bilateral Revolving Credit Facility ("UK Bilateral Facility")(4)	182,450			(2,255		)	180,195			182,450		178,299				(2,357		)	175,942			178,299
43/8% Senior Notes due 2021 (the "43/8% Notes")(5)	500,000			(3,725		)	496,275			502,500		500,000				(4,155		)	495,845			488,750
6% Senior Notes due 2023 (the "6% Notes due 2023")(5)	600,000			(4,851		)	595,149			615,000		600,000				(5,126		)	594,874			606,000
53/8% CAD Senior Notes due 2023 (the "CAD Notes")	187,262			(2,424		)	184,838			189,444		183,403				(2,506		)	180,897			186,154
53/4% Senior Subordinated Notes due 2024 (the "53/4% Notes")(5)	1,000,000			(7,439		)	992,561			1,010,000		1,000,000				(7,782		)	992,218			940,000
3% Euro Senior Notes due 2025 (the "Euro Notes")(5)	336,557			(3,941		)	332,616			337,684		343,347				(4,098		)	339,249			321,029
37/8% GBP Senior Notes due 2025 (the "GBP Notes")	521,286			(6,480		)	514,806			495,852		509,425				(6,573		)	502,852			453,811
53/8% Senior Notes due 2026 (the "53/8% Notes")	250,000			(3,078		)	246,922			246,875		250,000				(3,185		)	246,815			224,375
47/8% Senior Notes due 2027 (the "47/8% Notes")(5)	1,000,000			(12,086		)	987,914			957,500		1,000,000				(12,442		)	987,558			855,000
51/4% Senior Notes due 2028 (the "51/4% Notes")(5)	825,000			(10,628		)	814,372			798,188		825,000				(10,923		)	814,077			713,625
Real Estate Mortgages, Financing Lease Liabilities and Other	566,677			(431		)	566,246			566,677		606,702				(171		)	606,531			606,702
Accounts Receivable Securitization Program(6)	252,373			(184		)	252,189			252,373		221,673				(218		)	221,455			221,673
Mortgage Securitization Program(7)	50,000			(1,091		)	48,909			50,000		50,000				(1,128		)	48,872			50,000
Total Long-term Debt	8,574,147			(83,268		)	8,490,879					8,229,430			—	(86,607		)	8,142,823
Less Current Portion	(125,142		)	—			(125,142		)			(126,406		)		—			(126,406		)
Long-term Debt, Net of Current Portion	$	8,449,005		$	(83,268	)	$	8,365,737				$	8,103,024			$	(86,607	)	$	8,016,417

______________________________________________________________

(1) Collectively, the credit agreement ("Credit Agreement"). The Credit Agreement consists of a revolving credit facility (the "Revolving Credit Facility") and a term loan (the "Term Loan A"). The Credit Agreement is scheduled to mature on June 3, 2023. Of the $1,139,566 of outstanding borrowings under the Revolving Credit Facility as of March 31, 2019, 965,800 was denominated in United States dollars, 94,200 was denominated in Canadian dollars and 92,000 was denominated in Euros. In addition, we also had various outstanding letters of credit totaling $37,271. The remaining amount available for borrowing under the Revolving Credit Facility as of March 31, 2019 was $573,163 (which amount represents the maximum availability as of such date). The average interest rate in effect under the Credit Agreement was 4.0% as of March 31, 2019. The average interest rate in effect under the Revolving Credit Facility as of March 31, 2019 was 4.0% and the interest rate in effect under Term Loan A as of March 31, 2019 was 4.2%.

(2) In connection with the 2018 First Amendment (as defined in Note 5 to Notes to Consolidated Financial Statements included in our Annual Report), Iron Mountain Information Management, LLC ("IMIM") entered into an incremental term loan activation notice (the "Activation Notice") with certain lenders pursuant to which the lenders party to the Activation Notice agreed to provide commitments to fund an incremental term loan B in the amount of $700,000 (the "Term Loan B"). On March 26, 2018, IMIM borrowed the full amount of the Term Loan B. The Term Loan B is scheduled to mature on January 2, 2026. The interest rate in effect as of March 31, 2019 was 4.3%. The amount of debt for the Term Loan B reflects an unamortized original issue discount of $1,524 and $1,581 as of March 31, 2019 and December 31, 2018, respectively.

(3) The interest rate in effect as of March 31, 2019 was 5.7%. We had 331,875 Australian dollars outstanding on the AUD Term Loan as of March 31, 2019. The amount of debt for the AUD Term Loan reflects an unamortized original issue discount of $1,587 and $1,690 as of March 31, 2019 and December 31, 2018, respectively.

(4) The interest rate in effect as of March 31, 2019 was 3.2%.

(5) Collectively, the "Parent Notes".

(6) The interest rate in effect as of March 31, 2019 was 3.5%.

(7) The interest rate in effect as of March 31, 2019 was 3.5%.

See Note 4 to Notes to Consolidated Financial Statements included in our Annual Report for additional information regarding our Credit Agreement and our other long-term debt, including the direct obligors of each of our debt instruments as well as information regarding the fair value of our debt instruments (including the levels of the fair value hierarchy used to determine the fair value of our debt instruments). The levels of the fair value hierarchy used to determine the fair value of our debt as of March 31, 2019 are consistent with the levels of the fair value hierarchy used to determine the fair value of our debt as of December 31, 2018 (which are disclosed in our Annual Report). Additionally, see Note 5 to Notes to Consolidated Financial Statements included in our Annual Report for information regarding which of our consolidated subsidiaries guarantee certain of our debt instruments. There have been no material changes to our long-term debt since December 31, 2018.

Cash Pooling

As described in greater detail in Note 4 to Notes to Consolidated Financial Statements included in our Annual Report, certain of our subsidiaries participate in cash pooling arrangements (the “Cash Pools”) in order to help manage global liquidity requirements. We currently utilize two separate cash pools, one of which we utilize to manage global liquidity requirements for our QRSs (the "QRS Cash Pool") and the other for our TRSs (the "TRS Cash Pool").

The approximate amount of the net cash position for our QRS Cash Pool and the TRS Cash Pool and the approximate amount of the gross position and outstanding debit balances for each of these pools as of March 31, 2019 and December 31, 2018 are as follows:

	March 31, 2019							December 31, 2018
	Gross Cash Position		Outstanding Debit Balances			Net Cash Position		Gross Cash Position		Outstanding Debit Balances			Net Cash Position
QRS Cash Pool	$	271,400	$	(269,400	)	$	2,000	$	300,800	$	(298,800	)	$	2,000
TRS Cash Pool	281,100		(277,900		)	3,200		$	281,500	(279,300		)	2,200

The net cash position balances as of March 31, 2019 and December 31, 2018 are reflected as cash and cash equivalents in the Condensed Consolidated Balance Sheets.

Debt Covenants

The Credit Agreement, our indentures and other agreements governing our indebtedness contain certain restrictive financial and operating covenants, including covenants that restrict our ability to complete acquisitions, pay cash dividends, incur indebtedness, make investments, sell assets and take certain other corporate actions. The covenants do not contain a rating trigger. Therefore, a change in our debt rating would not trigger a default under the Credit Agreement, our indentures or other agreements governing our indebtedness. The Credit Agreement uses EBITDAR-based calculations as the primary measures of financial performance, including leverage and fixed charge coverage ratios.

Our leverage and fixed charge coverage ratios under the Credit Agreement as of March 31, 2019 and December 31, 2018, as well as our leverage ratio under our indentures as of March 31, 2019 and December 31, 2018 are as follows:

	March 31, 2019	December 31, 2018	Maximum/Minimum Allowable
Net total lease adjusted leverage ratio	5.8	5.6	Maximum allowable of 6.5
Net secured debt lease adjusted leverage ratio	2.8	2.6	Maximum allowable of 4.0
Bond leverage ratio (not lease adjusted)	6.1	5.8	Maximum allowable of 6.5-7.0(1)
Fixed charge coverage ratio	2.2	2.2	Minimum allowable of 1.5

______________________________________________________________

(1) The maximum allowable leverage ratio under our indentures for the 4⁷/₈% Notes, the GBP Notes and the 5¹/₄% Notes is 7.0, while the maximum allowable leverage ratio under the indentures pertaining to our remaining senior and senior subordinated notes is 6.5. In certain instances as provided in our indentures, we have the ability to incur additional indebtedness that would result in our bond leverage ratio exceeding the maximum allowable ratio under our indentures and still remain in compliance with the covenant.

Noncompliance with these leverage and fixed charge coverage ratios would have a material adverse effect on our financial condition and liquidity.

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Selected Consolidated Financial Statements of Parent, Guarantors, Canada Company and Non-Guarantors

3 Months Ended

Mar. 31, 2019

Selected Consolidated Financial Statements of Parent, Guarantors, Canada Company and Non-Guarantors

Selected Consolidated Financial Statements of Parent, Guarantors, Canada Company and Non-Guarantors

The following data summarizes the consolidating results of IMI on the equity method of accounting as of March 31, 2019 and December 31, 2018 and for the three months ended March 31, 2019 and 2018 and are prepared on the same basis as the consolidated financial statements.

The Parent Notes, the CAD Notes, the GBP Notes, and the 5³/₈% Notes are guaranteed by the subsidiaries referred to below as the Guarantors. These subsidiaries are 100% owned by IMI. The guarantees are full and unconditional, as well as joint and several.

Additionally, IMI guarantees the CAD Notes, which were issued by Iron Mountain Canada Operations ULC ("Canada Company"), the GBP Notes, which were issued by Iron Mountain (UK) PLC ("IM UK"), and the 5³/₈% Notes, which were issued by Iron Mountain US Holdings, Inc., which is one of the Guarantors. Canada Company and IM UK do not guarantee the Parent Notes. The subsidiaries that do not guarantee the Parent Notes, the CAD Notes, the GBP Notes, and the 5³/₈% Notes are referred to below as the Non-Guarantors.

In the normal course of business, we periodically change the ownership structure of our subsidiaries to meet the requirements of our business. In the event of such changes, we recast the prior period financial information within this footnote to conform to the current period presentation in the period such changes occur. Generally, these changes do not alter the designation of the underlying subsidiaries as Guarantors or Non-Guarantors. However, they may change whether the underlying subsidiary is owned by the Parent, a Guarantor or a Non-Guarantor. If such a change occurs, the amount of investment in subsidiaries in the below Condensed Consolidated Balance Sheets and equity in the earnings (losses) of subsidiaries, net of tax in the below Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) with respect to the relevant Parent, Guarantors, Non-Guarantors and Eliminations columns also would change.

CONDENSED CONSOLIDATED BALANCE SHEETS

	March 31, 2019
	Parent		Guarantors		Non- Guarantors		Eliminations			Consolidated
Assets
Current Assets:
Cash and cash equivalents(1)	$	11	$	122,114	$	109,991	$	(70,641	)	$	161,475
Accounts receivable	—		37,598		799,923		—			837,521
Intercompany receivable	—		1,032,582		—		(1,032,582		)	—
Prepaid expenses and other	—		110,223		100,660		(29		)	210,854
Total Current Assets	11		1,302,517		1,010,574		(1,103,252		)	1,209,850
Property, Plant and Equipment, Net	168		2,999,744		1,525,671		—			4,525,583
Other Assets, Net:
Long-term notes receivable from affiliates and intercompany receivable	5,009,984		—		—		(5,009,984		)	—
Investment in subsidiaries	1,926,435		1,017,247		—		(2,943,682		)	—
Goodwill	—		2,857,855		1,607,523		—			4,465,378
Operating lease right-of-use assets	—		895,920		895,616		—			1,791,536
Other	5		976,403		720,608		—			1,697,016
Total Other Assets, Net	6,936,424		5,747,425		3,223,747		(7,953,666		)	7,953,930
Total Assets	$	6,936,603	$	10,049,686	$	5,759,992	$	(9,056,918	)	$	13,689,363
Liabilities and Equity
Intercompany Payable	$	729,843	$	—	$	302,739	$	(1,032,582	)	$	—
Debit Balances Under Cash Pools	—		—		70,641		(70,641		)	—
Current Portion of Long-Term Debt	—		55,940		69,231		(29		)	125,142
Total Other Current Liabilities (includes current portion of operating lease liabilities)	224,825		632,699		532,467		—			1,389,991
Long-Term Debt, Net of Current Portion	4,218,887		2,212,686		1,934,164		—			8,365,737
Long-Term Operating Lease Liabilities, Net of Current Portion	—		832,007		824,652		—			1,656,659
Long-Term Notes Payable to Affiliates and Intercompany Payable	—		5,009,984		—		(5,009,984		)	—
Other Long-term Liabilities	3,647		51,575		262,776		—			317,998
Commitments and Contingencies (See Note 7)
Redeemable Noncontrolling Interests	—		—		73,102		—			73,102
Total Iron Mountain Incorporated Stockholders' Equity	1,759,401		1,254,795		1,688,887		(2,943,682		)	1,759,401
Noncontrolling Interests	—		—		1,333		—			1,333
Total Equity	1,759,401		1,254,795		1,690,220		(2,943,682		)	1,760,734
Total Liabilities and Equity	$	6,936,603	$	10,049,686	$	5,759,992	$	(9,056,918	)	$	13,689,363

______________________________________________________________

(1) Included within Cash and Cash Equivalents at March 31, 2019 is approximately $76,000 and $0 of cash on deposit associated with our Cash Pools for the Guarantors and Non-Guarantors, respectively.

CONDENSED CONSOLIDATED BALANCE SHEETS (Continued)

	December 31, 2018
	Parent		Guarantors		Non- Guarantors		Eliminations			Consolidated
Assets
Current Assets:
Cash and cash equivalents(1)	$	132	$	61,650	$	169,318	$	(65,615	)	$	165,485
Accounts receivable	—		47,900		798,989		—			846,889
Intercompany receivable	—		818,463		—		(818,463		)	—
Prepaid expenses and other	93		108,879		86,797		(29		)	195,740
Total Current Assets	225		1,036,892		1,055,104		(884,107		)	1,208,114
Property, Plant and Equipment, Net	190		3,002,104		1,487,263		—			4,489,557
Other Assets, Net:
Long-term notes receivable from affiliates and intercompany receivable	4,954,686		—		—		(4,954,686		)	—
Investment in subsidiaries	1,885,174		1,006,144		—		(2,891,318		)	—
Goodwill	—		2,858,539		1,582,491		—			4,441,030
Other	—		979,483		734,063		—			1,713,546
Total Other Assets, Net	6,839,860		4,844,166		2,316,554		(7,846,004		)	6,154,576
Total Assets	$	6,840,275	$	8,883,162	$	4,858,921	$	(8,730,111	)	$	11,852,247
Liabilities and Equity
Intercompany Payable	$	462,927	$	—	$	355,536	$	(818,463	)	$	—
Debit Balances Under Cash Pools	—		10,612		55,003		(65,615		)	—
Current Portion of Long-Term Debt	—		63,703		62,732		(29		)	126,406
Total Other Current Liabilities	268,373		616,826		451,073		—			1,336,272
Long-Term Debt, Net of Current Portion	4,223,822		1,877,649		1,914,946		—			8,016,417
Long-Term Notes Payable to Affiliates and Intercompany Payable	—		4,954,686		—		(4,954,686		)	—
Other Long-term Liabilities	973		115,994		300,064		—			417,031
Commitments and Contingencies (See Note 7)
Redeemable Noncontrolling Interests	—		—		70,532		—			70,532
Total Iron Mountain Incorporated Stockholders' Equity	1,884,180		1,243,692		1,647,626		(2,891,318		)	1,884,180
Noncontrolling Interests	—		—		1,409		—			1,409
Total Equity	1,884,180		1,243,692		1,649,035		(2,891,318		)	1,885,589
Total Liabilities and Equity	$	6,840,275	$	8,883,162	$	4,858,921	$	(8,730,111	)	$	11,852,247

______________________________________________________________

(1) Included within Cash and Cash Equivalents at December 31, 2018 is approximately $57,200 and $12,700 of cash on deposit associated with our Cash Pools for the Guarantors and Non-Guarantors, respectively.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS)

	Three Months Ended March 31, 2019
	Parent			Guarantors			Non- Guarantors		Eliminations			Consolidated
Revenues:
Storage rental	$	—		$	403,741		$	259,233	$	—		$	662,974
Service	—			239,693			151,196		—			390,889
Intercompany revenues	—			1,154			4,923		(6,077		)	—
Total Revenues	—			644,588			415,352		(6,077		)	1,053,863
Operating Expenses:
Cost of sales (excluding depreciation and amortization)	—			263,137			198,407		—			461,544
Intercompany	—			4,923			1,154		(6,077		)	—
Selling, general and administrative	87			187,822			82,650		—			270,559
Depreciation and amortization	23			102,954			59,506		—			162,483
(Gain) Loss on disposal/write-down of property, plant and equipment, net	—			574			28		—			602
Total Operating Expenses	110			559,410			341,745		(6,077		)	895,188
Operating (Loss) Income	(110		)	85,178			73,607		—			158,675
Interest Expense (Income), Net(1)	49,625			4,057			48,754		—			102,436
Other Expense (Income), Net	182			527			14,501		—			15,210
(Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes	(49,917		)	80,594			10,352		—			41,029
Provision (Benefit) for Income Taxes	—			1,301			9,252		—			10,553
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax	(79,478		)	4,158			—		75,320			—
Income (Loss) from Continuing Operations	29,561			75,135			1,100		(75,320		)	30,476
(Loss) Income from Discontinued Operations, Net of Tax	—			(24		)	—		—			(24		)
Net Income (Loss)	29,561			75,111			1,100		(75,320		)	30,452
Less: Net Income (Loss) Attributable to Noncontrolling Interests	—			—			891		—			891
Net Income (Loss) Attributable to Iron Mountain Incorporated	$	29,561		$	75,111		$	209	$	(75,320	)	$	29,561
Net Income (Loss)	$	29,561		$	75,111		$	1,100	$	(75,320	)	$	30,452
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustments	6,141			—			12,050		—			18,191
Change in fair value of interest rate swap agreements	(2,674		)	—			—		—			(2,674		)
Equity in Other Comprehensive (Loss) Income of Subsidiaries	11,237			7,156			—		(18,393		)	—
Total Other Comprehensive Income (Loss)	14,704			7,156			12,050		(18,393		)	15,517
Comprehensive Income (Loss)	44,265			82,267			13,150		(93,713		)	45,969
Comprehensive (Loss) Income Attributable to Noncontrolling Interests	—			—			1,704		—			1,704
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	$	44,265		$	82,267		$	11,446	$	(93,713	)	$	44,265

_____________________________________________________________

(1) Included within Interest Expense (Income), Net are intercompany management fees and royalty fees, which are eliminated in our consolidated financial statements.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Continued)

	Three Months Ended March 31, 2018
	Parent			Guarantors			Non- Guarantors			Eliminations			Consolidated
Revenues:
Storage rental	$	—		$	396,476		$	254,673		$	—		$	651,149
Service	—			230,230			161,079			—			391,309
Intercompany revenues	—			1,205			4,491			(5,696		)	—
Total Revenues	—			627,911			420,243			(5,696		)	1,042,458
Operating Expenses:
Cost of sales (excluding depreciation and amortization)	—			246,163			202,558			—			448,721
Intercompany cost of sales	—			4,491			1,205			(5,696		)	—
Selling, general and administrative	43			185,348			84,339			—			269,730
Depreciation and amortization	33			102,446			58,099			—			160,578
(Gain) Loss on disposal/write-down of property, plant and equipment, net	—			(356		)	(774		)	—			(1,130		)
Total Operating Expenses	76			538,092			345,427			(5,696		)	877,899
Operating (Loss) Income	(76		)	89,819			74,816			—			164,559
Interest Expense (Income), Net(1)	49,941			(1,508		)	49,193			—			97,626
Other (Income) Expense, Net	(1,157		)	1,560			19,748			—			20,151
(Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes	(48,860		)	89,767			5,875			—			46,782
(Benefit) Provision for Income Taxes	—			(6,712		)	7,880			—			1,168
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax	(93,544		)	2,865			—			90,679			—
Income (Loss) from Continuing Operations	44,684			93,614			(2,005		)	(90,679		)	45,614
(Loss) Income from Discontinued Operations	—			(422		)	(40		)	—			(462		)
Net Income (Loss)	44,684			93,192			(2,045		)	(90,679		)	45,152
Less: Net Income (Loss) Attributable to Noncontrolling Interests	—			—			468			—			468
Net Income (Loss) Attributable to Iron Mountain Incorporated	$	44,684		$	93,192		$	(2,513	)	$	(90,679	)	$	44,684
Net Income (Loss)	$	44,684		$	93,192		$	(2,045	)	$	(90,679	)	$	45,152
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustments	(5,635		)	—			37,286			—			31,651
Change in fair value of interest rate swap agreements	(185		)	—			—			—			(185		)
Equity in Other Comprehensive Income (Loss) of Subsidiaries	35,732			38,336			—			(74,068		)	—
Total Other Comprehensive Income (Loss)	29,912			38,336			37,286			(74,068		)	31,466
Comprehensive Income (Loss)	74,596			131,528			35,241			(164,747		)	76,618
Comprehensive Income (Loss) Attributable to Noncontrolling Interests	—			—			2,027			—			2,027
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	$	74,596		$	131,528		$	33,214		$	(164,747	)	$	74,591

_____________________________________________________________

(1) Included within Interest Expense (Income), Net are intercompany management fees and royalty fees, which are eliminated in our consolidated financial statements.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

	Three Months Ended March 31, 2019
	Parent			Guarantors			Non- Guarantors			Eliminations			Consolidated
Cash Flows from Operating Activities:
Cash Flows from Operating Activities—Continuing Operations	$	(68,310	)	$	116,235		$	69,142		$	—		$	117,067
Cash Flows from Operating Activities—Discontinued Operations	—			—			—			—			—
Cash Flows from Operating Activities	(68,310		)	116,235			$	69,142		$	—		$	117,067
Cash Flows from Investing Activities:
Capital expenditures	—			(84,766		)	(99,999		)	—			(184,765		)
Cash paid for acquisitions, net of cash acquired	—			(9,508		)	(29,915		)	—			(39,423		)
Intercompany loans to subsidiaries	252,175			22,859			—			(275,034		)	—
Acquisitions of customer relationships, customer inducements and data center lease-based intangibles	—			(49,301		)	(18,611		)	—			(67,912		)
Investments in joint ventures (see Note 9)	—			(19,222		)	—			—			(19,222		)
Proceeds from sales of property and equipment and other, net	—			36			69			—			105
Cash Flows from Investing Activities—Continuing Operations	252,175			(139,902		)	(148,456		)	(275,034		)	(311,217		)
Cash Flows from Investing Activities—Discontinued Operations	—			—			—			—			—
Cash Flows from Investing Activities	252,175			(139,902		)	(148,456		)	(275,034		)	(311,217		)
Cash Flows from Financing Activities:
Repayment of revolving credit facility, term loan facilities and other debt	—			(410,563		)	(940,679		)	—			(1,351,242		)
Proceeds from revolving credit facility, term loan facilities and other debt	—			734,243			989,219			—			1,723,462
Debit (payments) balances under cash pools	—			(10,612		)	15,638			(5,026		)	—
Debt (repayment to) financing from and equity (distribution to) contribution from noncontrolling interests, net	—			—			(498		)	—			(498		)
Intercompany loans from parent	—			(228,937		)	(46,097		)	275,034			—
Parent cash dividends	(178,023		)	—			—			—			(178,023		)
Net (payments) proceeds associated with employee stock-based awards	(5,963		)	—			—			—			(5,963		)
Cash Flows from Financing Activities—Continuing Operations	(183,986		)	84,131			17,583			270,008			187,736
Cash Flows from Financing Activities—Discontinued Operations	—			—			—			—			—
Cash Flows from Financing Activities	(183,986		)	84,131			17,583			270,008			187,736
Effect of exchange rates on cash and cash equivalents	—			—			2,404			—			2,404
(Decrease) Increase in cash and cash equivalents	(121		)	60,464			(59,327		)	(5,026		)	(4,010		)
Cash and cash equivalents, including Restricted Cash, beginning of period	132			61,650			169,318			(65,615		)	165,485
Cash and cash equivalents, including Restricted Cash, end of period	$	11		$	122,114		$	109,991		$	(70,641	)	$	161,475

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS(Continued)

	Three Months Ended March 31, 2018
	Parent			Guarantors			Non- Guarantors			Eliminations			Consolidated
Cash Flows from Operating Activities:
Cash Flows from Operating Activities—Continuing Operations	$	(66,516	)	$	96,674		$	61,410		$	—		$	91,568
Cash Flows from Operating Activities—Discontinued Operations	—			—			—			—			—
Cash Flows from Operating Activities	(66,516		)	96,674			61,410			—			91,568
Cash Flows from Investing Activities:
Capital expenditures	—			(62,148		)	(33,457		)	—			(95,605		)
Cash paid for acquisitions, net of cash acquired	—			(1,315,549		)	(113,425		)	—			(1,428,974		)
Intercompany loans to subsidiaries	157,737			208,443			—			(366,180		)	—
Acquisitions of customer relationships, customer inducements and data center lease-based intangibles	—			(11,874		)	(6,172		)	—			(18,046		)
Proceeds from sales of property and equipment and other, net	—			(19,466		)	79			—			(19,387		)
Cash Flows from Investing Activities—Continuing Operations	157,737			(1,200,594		)	(152,975		)	(366,180		)	(1,562,012		)
Cash Flows from Investing Activities—Discontinued Operations	—			—			—			—			—
Cash Flows from Investing Activities	157,737			(1,200,594		)	(152,975		)	(366,180		)	(1,562,012		)
Cash Flows from Financing Activities:
Repayment of revolving credit facility, term loan facilities and other debt	—			(2,308,119		)	(2,102,537		)	—			(4,410,656		)
Proceeds from revolving credit facility, term loan facilities and other debt	—			3,067,988			2,428,503			—			5,496,491
Debit (payments) balances under cash pools	—			(51,946		)	(11,733		)	63,679			—
Debt (repayment to) financing from and equity (distribution to) contribution from noncontrolling interests, net	—			—			(561		)	—			(561		)
Intercompany loans from parent	—			(154,184		)	(211,996		)	366,180			—
Parent cash dividends	(169,006		)	—			—			—			(169,006		)
Net (payments) proceeds associated with employee stock-based awards	(5,950		)	—			—			—			(5,950		)
Net proceeds associated with the Over-Allotment Option exercise	76,192			—			—			—			76,192
Net proceeds associated with the At the Market (ATM) Program	8,716			—			—			—			8,716
Payment of debt financing and stock issuance costs	(412		)	(9,075		)	(487		)	—			(9,974		)
Cash Flows from Financing Activities—Continuing Operations	(90,460		)	544,664			101,189			429,859			985,252
Cash Flows from Financing Activities—Discontinued Operations	—			—			—			—			—
Cash Flows from Financing Activities	(90,460		)	544,664			101,189			429,859			985,252
Effect of exchange rates on cash and cash equivalents	—			—			1,984			—			1,984
Increase (Decrease) in cash and cash equivalents	761			(559,256		)	11,608			63,679			(483,208		)
Cash and cash equivalents, including Restricted Cash, beginning of period	2,433			634,317			383,675			(94,726		)	925,699
Cash and cash equivalents, including Restricted Cash, end of period	$	3,194		$	75,061		$	395,283		$	(31,047	)	$	442,491

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Segment Information

3 Months Ended

Mar. 31, 2019

Segment Reporting [Abstract]

Segment Information

Our six reportable operating segments as of December 31, 2018 are described in Note 9 to Notes to Consolidated Financial Statements included in our Annual Report and are as follows:

• North American Records and Information Management Business

• North American Data Management Business

• Western European Business

• Other International Business

• Global Data Center Business

• Corporate and Other Business

There have been no changes made to our reportable operating segments since December 31, 2018, other than the impact of the Consumer Storage Transaction (as defined in Note 9). Prior to the Consumer Storage Transaction, our consumer storage business was a component of our Corporate and Other Business Segment. The previously reported segment information has been restated to conform to the current presentation and reflects the changes to our reportable operating segments that occurred in fourth quarter of 2018 as described in Note 9 to Notes to Consolidated Financial Statements included in our Annual Report. The operations associated with acquisitions completed during the first three months of 2019 have been incorporated into our existing reportable operating segments.

An analysis of our business segment information and reconciliation to the accompanying Condensed Consolidated Financial Statements is as follows:

	North American Records and Information Management Business		North American Data Management Business		Western European Business		Other International Business		Global Data Center Business		Corporate and Other Business			Total Consolidated
As of and for the Three Months Ended March 31, 2019
Total Revenues	$	527,380	$	96,747	$	128,753	$	200,956	$	61,536	$	38,491		$	1,053,863
Storage Rental	306,986		66,572		80,695		129,473		59,718		19,530			662,974
Service	220,394		30,175		48,058		71,483		1,818		18,961			390,889
Depreciation and Amortization	60,002		10,202		15,257		30,599		31,632		14,791			162,483
Depreciation	45,752		8,013		10,947		18,218		19,013		12,668			114,611
Amortization	14,250		2,189		4,310		12,381		12,619		2,123			47,872
Adjusted EBITDA	223,683		50,552		39,209		58,124		26,011		(73,073		)	324,506
Total Assets(1)	5,823,817		902,514		1,414,878		2,686,938		2,310,001		551,215			13,689,363
Expenditures for Segment Assets	56,265		5,632		30,101		31,254		153,705		15,143			292,100
Capital Expenditures (see Liquidity and Capital Resources section of Management's Discussion & Analysis of Financial Condition and Results of Operations)	28,688		5,632		2,116		15,149		121,557		11,623			184,765
Cash Paid (Received) for Acquisitions, Net of Cash Acquired	9,876		—		11,484		14,543		—		3,520			39,423
Acquisitions of Customer Relationships, Customer Inducements and Contract Fulfillment Costs and third-party commissions.	17,701		—		16,501		1,562		32,148		—			67,912
As of and for the Three Months Ended March 31, 2018
Total Revenues	$	526,843	$	99,964	$	134,075	$	210,767	$	46,603	$	24,206		$	1,042,458
Storage Rental	304,819		69,246		83,952		131,747		45,495		15,890			651,149
Service	222,024		30,718		50,123		79,020		1,108		8,316			391,309
Depreciation and Amortization	62,752		10,104		17,556		31,873		22,268		16,025			160,578
Depreciation	49,138		8,023		12,758		19,064		11,380		13,069			113,432
Amortization	13,614		2,081		4,798		12,809		10,888		2,956			47,146
Adjusted EBITDA	225,738		53,852		43,966		60,747		20,790		(62,078		)	343,015
Total Assets(1)	5,030,238		833,690		917,155		2,441,685		1,875,766		899,615			11,998,149
Expenditures for Segment Assets	43,181		6,853		7,480		32,160		1,438,012		14,939			1,542,625
Capital Expenditures (see Liquidity and Capital Resources section of Management's Discussion & Analysis of Financial Condition and Results of Operations)	29,870		6,853		6,047		25,142		13,111		14,582			95,605
Cash Paid (Received) for Acquisitions, Net of Cash Acquired	1,551		—		—		3,208		1,424,215		—			1,428,974
Acquisitions of Customer Relationships, Customer Inducements and Contract Fulfillment Costs	11,760		—		1,433		3,810		686		357			18,046

______________________________________________________________

(1) Excludes all intercompany receivables or payables and investment in subsidiary balances. Total assets as of March 31, 2019 reflects the adoption of ASU 2016-02.

The accounting policies of the reportable operating segments are the same as those described in Note 2 and in Note 2 to Notes to Consolidated Financial Statements included in our Annual Report. Adjusted EBITDA for each segment is defined as income (loss) from continuing operations before interest expense, net, provision (benefit) for income taxes, depreciation and amortization, and also excludes certain items that we believe are not indicative of our core operating results, specifically: (i) (gain) loss on disposal/write-down of property, plant and equipment, net (including real estate); (ii) intangible impairments; (iii) other expense (income), net (which includes foreign currency transaction (gains) losses, net); and (iv) Significant Acquisition Costs (as defined below). Internally, we use Adjusted EBITDA as the basis for evaluating the performance of, and allocating resources to, our operating segments.

A reconciliation of Adjusted EBITDA to income (loss) from continuing operations on a consolidated basis is as follows:

	Three Months Ended March 31,
	2019		2018
Adjusted EBITDA	$	324,506	$	343,015
(Add)/Deduct:
Provision (Benefit) for Income Taxes	10,553		1,168
Other Expense (Income), Net	15,210		20,151
Interest Expense, Net	102,436		97,626
Loss (gain) on disposal/write-down of property, plant and equipment, net	602		(1,130		)
Depreciation and Amortization	162,483		160,578
Significant Acquisition Costs(1)	2,746		19,008
Income (Loss) from Continuing Operations	$	30,476	$	45,614

_______________________________________________________________________________

(1) As defined in Note 9 to Notes to Consolidated Financial Statements included in our Annual Report.

Information as to our revenues by product and service lines by segment are as follows:

	North American Records and Information Management Business		North American Data Management Business		Western European Business		Other International Business		Global Data Center Business		Corporate and Other Business		Total Consolidated
For the Three Months Ended March 31, 2019
Records Management(1)	$	427,367	$	—	$	108,707	$	172,977	$	—	$	24,345	$	733,396
Data Management(1)	—		93,989		19,886		19,227		—		14,146		147,248
Information Destruction(1)(2)	100,013		2,758		160		8,752		—		—		111,683
Data Center	—		—		—		—		61,536		—		61,536
Total Revenues	$	527,380	$	96,747	$	128,753	$	200,956	$	61,536	$	38,491	$	1,053,863
For the Three Months Ended March 31, 2018
Records Management(1)	$	435,002	$	—	$	113,759	$	181,330	$	—	$	10,404	$	740,495
Data Management(1)	—		97,594		20,219		20,478		—		13,802		152,093
Information Destruction(1)(2)	91,841		2,370		97		8,959		—		—		103,267
Data Center	—		—		—		—		46,603		—		46,603
Total Revenues	$	526,843	$	99,964	$	134,075	$	210,767	$	46,603	$	24,206	$	1,042,458

_______________________________________________________________________________

(1) Each of the offerings within our product and service lines has a component of revenue that is storage rental related and a component that is service revenues, except for information destruction, which does not have a storage rental component.

(2) Includes secure shredding services.

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2019

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

We are involved in litigation from time to time in the ordinary course of business. A portion of the defense and/or settlement costs associated with such litigation is covered by various commercial liability insurance policies purchased by us and, in limited cases, indemnification from third parties. Our policy is to establish reserves for loss contingencies when the losses are both probable and reasonably able to be estimated. We record legal costs associated with loss contingencies as expenses in the period in which they are incurred. There have been no material updates or changes to the matters disclosed in Note 10 to Notes to Consolidated Financial Statements included in our Annual Report, nor have there been any new material loss contingencies since December 31, 2018. We believe that the resolution of the matters disclosed in Note 10 to Notes to Consolidated Financial Statements included in our Annual Report will not have a material impact on our consolidated financial condition, results of operations or cash flows. We have estimated a reasonably possible range for all loss contingencies, including those disclosed in Note 10 to Notes to Consolidated Financial Statements included in our Annual Report, and believe it is reasonably possible that we could incur aggregate losses in addition to amounts currently accrued for all matters up to an additional $17,500 over the next several years, of which certain amounts would be covered by insurance or indemnity arrangements.

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Stockholders' Equity Matters

3 Months Ended

Mar. 31, 2019

Equity [Abstract]

Stockholders' Equity Matters

Our board of directors has adopted a dividend policy under which we have paid, and in the future intend to pay, quarterly cash dividends on our common stock. The amount and timing of future dividends will continue to be subject to the approval of our board of directors, in its sole discretion, and to applicable legal requirements.

In fiscal year 2018 and the first three months of 2019, our board of directors declared the following dividends:

Declaration Date	Dividend Per Share		Record Date	Total Amount		Payment Date
February 14, 2018	$	0.5875	March 15, 2018	$	167,969	April 2, 2018
May 24, 2018	0.5875		June 15, 2018	168,078		July 2, 2018
July 24, 2018	0.5875		September 17, 2018	168,148		October 2, 2018
October 25, 2018	0.6110		December 17, 2018	174,935		January 3, 2019
February 7, 2019	0.6110		March 15, 2019	175,242		April 2, 2019

At The Market (ATM) Equity Program

As described in greater detail in Note 12 to Notes to Consolidated Financial Statements included in our Annual Report, we entered into a distribution agreement with a syndicate of 10 banks (the “Agents”) pursuant to which we may sell, from time to time, up to an aggregate sales price of $500,000 of our common stock through the Agents (the “At The Market (ATM) Equity Program”). There were no shares of common stock sold under the At The Market (ATM) Equity Program during the three months ended March 31, 2019. As of March 31, 2019, the remaining aggregate sale price of shares of our common stock available for distribution under the At The Market (ATM) Equity Program was approximately $431,200.

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Divestments

3 Months Ended

Mar. 31, 2019

Discontinued Operations and Disposal Groups [Abstract]

Divestments

On March 19, 2019, we contributed our customer contracts and certain intellectual property and other assets used by us to operate our consumer storage business in the United States and Canada (the "IM Consumer Storage Assets") and approximately $20,000 in cash (gross of certain transaction expenses) (the "Cash Contribution") to a joint venture entity, Makespace LLC (the "Makespace JV"), established by us and Makespace Labs, Inc. ("Makespace"), a consumer storage services provider (the "Consumer Storage Transaction"). At the closing date of the Consumer Storage Transaction, the Makespace JV owned (i) the IM Consumer Storage Assets, (ii) the Cash Contribution and (iii) the customer contracts, intellectual property and certain other assets used by Makespace to operate its consumer storage business in the United States. As part of the Consumer Storage Transaction, we received an equity interest of approximately 34% in the Makespace JV (the "Makespace Investment"). In connection with the Consumer Storage Transaction and the Makespace Investment, we also entered into a storage and service agreement with the Makespace JV to provide certain storage and related services to the Makespace JV (see Note 11).

We have concluded that the divestment of the IM Consumer Storage Assets in the Consumer Storage Transaction does not meet the criteria to be reported as a discontinued operation in our consolidated financial statements, as our decision to divest this business does not represent a strategic shift that will have a major effect on our operations and financial results. Accordingly, the revenues and expenses associated with this business are presented as a component of income (loss) from continuing operations in our Condensed Consolidated Statements of Operations for the three months ended March 31, 2019 and 2018, respectively, and the cash flows associated with this business are presented as a component of cash flows from continuing operations in our Condensed Consolidated Statements of Cash Flows for the three months ended March 31, 2019 and 2018, respectively, through the closing date of the Consumer Storage Transaction.

As a result of the Consumer Storage Transaction, we recorded a gain on sale of approximately $4,200 to Other expense (income), net, in the first quarter of 2019, representing the excess of the fair value of the consideration received over the sum of (i) the carrying value of our consumer storage operations and (ii) the Cash Contribution. At the closing date of the Consumer Storage Transaction, the fair value of the Makespace Investment was approximately $27,500 and is presented as a component of Other within Other assets, net in our Condensed Consolidated Balance Sheet as of March 31, 2019. We account for the Makespace Investment as an equity method investment.

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Significant Acquisition Costs

3 Months Ended

Mar. 31, 2019

Business Combinations [Abstract]

Recall Costs

Significant Acquisition Costs included in the accompanying Condensed Consolidated Statements of Operations are as follows:

	Three Months Ended March 31,
	2019		2018
Cost of sales (excluding depreciation and amortization)	$	898	$	296
Selling, general and administrative expenses	1,848		18,712
Total Significant Acquisition Costs	$	2,746	$	19,008

Significant Acquisition Costs included in the accompanying Condensed Consolidated Statements of Operations by segment are as follows:

	Three Months Ended March 31,
	2019		2018
North American Records and Information Management Business	$	378	$	584
North American Data Management Business	—		—
Western European Business	—		2,152
Other International Business	502		537
Global Data Center Business	143		10,181
Corporate and Other Business	1,723		5,554
Total Significant Acquisition Costs	$	2,746	$	19,008

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Related Party Transactions

3 Months Ended

Mar. 31, 2019

Related Party Transactions [Abstract]

Related Party Transactions

In connection with the Consumer Storage Transaction and the Makespace Investment (both as described more fully in Note 9), we also entered into a storage and service agreement with the Makespace JV to provide certain storage and related services to the Makespace JV (the "Makespace Agreement"). Revenues and expenses associated with the Makespace Agreement are presented as a component of our North American Records and Information Management Business segment. For the three months ended March 31, 2019, we recognized an immaterial amount of revenue associated with the Makespace Agreement.

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Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2019

Accounting Policies [Abstract]

Lessee, Leases [Policy Text Block]

Leases

We lease facilities for certain warehouses, data centers and office space. We also have land leases, including those on which certain facilities are located. The majority of our leased facilities are classified as operating leases that, on average, have initial lease terms of five to 10 years, with one or more lease renewal options to extend the lease term. Our lease renewal option terms generally range from one to five years. The exercise of the lease renewal option is at our sole discretion and may contain fixed rent, fair market value based rent or Consumer Price Index rent escalation clauses. We include option periods in the lease term when our failure to renew the lease would result in an economic disincentive, thereby making it reasonably certain that we will renew the lease. We recognize straight line rental expense over the life of the lease and any fair market value or Consumer Price Index rent escalations are recognized as variable lease expense in the period in which the obligation is incurred. In addition, we lease certain vehicles and equipment. Vehicle and equipment leases have lease terms ranging from one to seven years.

The lease right-of-use assets and related lease liabilities are classified as either operating or financing. Lease right-of-use assets are calculated as the net present value of future payments plus any capitalized initial direct costs less any tenant improvements or lease incentives. Lease liabilities are calculated as the net present value of future payments. In calculating the present value of the lease payments, we will utilize the rate stated within the lease (in the limited circumstances when such rate is available) or, if no rate is explicitly stated, we have elected to utilize a rate that reflects our securitized incremental borrowing rate by geography for the lease term. In July 2018, the FASB issued ASU 2018-11, Leases - Targeted Improvements ("ASU 2018-11"). ASU 2018-11 provides a practical expedient which allows lessees to account for nonlease components (which include common area maintenance, taxes, and insurance) with the related lease component. Any variable nonlease components are not included within the lease right-of-use asset and lease liability on the Condensed Consolidated Balance Sheets, and instead, are reflected as an expense in the period incurred. We have elected to take this practical expedient upon adoption of ASU 2016-02.

Cash, Cash Equivalents and Restricted Cash

Cash, Cash Equivalents and Restricted Cash

Cash and cash equivalents include cash on hand and cash invested in highly liquid short-term securities, which have remaining maturities at the date of purchase of less than 90 days. Cash and cash equivalents are carried at cost, which approximates fair value.

Revenue Recognition, Policy [Policy Text Block]

Revenues

Goodwill and Other Intangible Assets

Finite-lived Intangible Assets and Liabilities

Finite-lived intangible assets and liabilities are primarily comprised of customer relationship intangible assets, customer inducements and data center intangible assets and liabilities (which include data center in-place lease intangible assets, data center tenant relationship intangible assets, data center above-market in-place lease intangible assets and data center below-market in-place lease intangible assets). Since December 31, 2018, there have been no changes to our accounting policies related to the accounting for any of our finite-lived intangible assets and liabilities as disclosed in Note 2.i. to Notes to Consolidated Financial Statements included in our Annual Report.

Stock-Based Compensation

For our Employee Stock-Based Awards made on or after February 20, 2019, we have included the following retirement provision: Upon an employee’s retirement on or after attaining age 58, if the sum of (i) the award recipient’s age at retirement and (ii) the award recipient’s years of service with the company totals at least 70, the award recipient is entitled to continued vesting of any outstanding Employee Stock-Based Awards which include the 2019 Retirement Criteria subsequent to their retirement, provided that, for awards granted in the year of retirement, their retirement occurs on or after July 1st (the “2019 Retirement Criteria”). Accordingly, (i) grants of Employee Stock-Based Awards to an employee who has met the 2019 Retirement Criteria on or before the date of grant, or will meet the Retirement Criteria before July 1^st of the year of the grant, will be expensed between the date of grant and July 1^st of the grant year and (ii) grants of Employee Stock-Based Awards to employees who will meet the 2019 Retirement Criteria during the award’s normal vesting period will be expensed between the date of grant and the date upon which the award recipient meets the 2019 Retirement Criteria. Stock options and RSUs granted to recipients who meet the 2019 Retirement Criteria will continue vesting on the original vesting schedule, and the stock options will remain exercisable up to three years after retirement, or the original expiration date of the stock options, if earlier. PUs granted to recipients who meet the 2019 Retirement Criteria will continue to vest and be delivered in accordance with the original vesting schedule of the applicable PU award and remain subject to the same performance conditions.

Stock-Based Compensation

We record stock-based compensation expense, utilizing the straight-line method, for the cost of stock options, restricted stock units ("RSUs"), performance units ("PUs") and shares of stock issued under our employee stock purchase plan (together, "Employee Stock-Based Awards").

Income (Loss) Per Share-Basic and Diluted

Income (Loss) Per Share—Basic and Diluted

Basic income (loss) per common share is calculated by dividing income (loss) by the weighted average number of common shares outstanding. The calculation of diluted income (loss) per share is consistent with that of basic income (loss) per share, but gives effect to all potential common shares (that is, securities such as stock options, RSUs or PUs) that were outstanding during the period, unless the effect is antidilutive.

Income Taxes

We provide for income taxes during interim periods based on our estimate of the effective tax rate for the year. Our estimate of the effective tax rates for the years ending December 31, 2019 and 2018 reflect the impact of the U.S. tax reform legislation, commonly referred to as the Tax Cuts and Jobs Act (the “Tax Reform Legislation”). See Note 7 to Notes to Consolidated Financial Statements included in our Annual Report for additional information regarding the impact the Tax Reform Legislation had on us. Discrete items and changes in our estimate of the annual effective tax rate are recorded in the period they occur. Our effective tax rate is subject to variability in the future due to, among other items: (1) changes in the mix of income between our qualified REIT subsidiaries ("QRSs") and our domestic taxable REIT subsidiaries ("TRSs"), as well as among the jurisdictions in which we operate; (2) tax law changes; (3) volatility in foreign exchange gains and losses; (4) the timing of the establishment and reversal of tax reserves; and (5) our ability to utilize net operating losses that we generate.

Fair Value Measurements

Fair Value Measurements

Our financial assets or liabilities that are carried at fair value are required to be measured using inputs from the three levels of the fair value hierarchy. A financial asset or liability's classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement.

The three levels of the fair value hierarchy are as follows:

Level 1—Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that we have the ability to access at the measurement date.

Level 2—Inputs include quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (i.e., interest rates, yield curves, etc.), and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs).

Level 3—Unobservable inputs that reflect our assumptions about the assumptions that market participants would use in pricing the asset or liability.

New Accounting Pronouncements

Data Center Lessor Considerations

Our data center business features storage rental provided to customers at contractually specified rates over a fixed contractual period. Prior to January 1, 2019, our data center revenue contracts were accounted for in accordance with Accounting Standards Codification (“ASC”) No. 840, Leases ("ASC 840"). On January 1, 2019, we adopted ASU 2016-02, as described in more detail in Note 2.d. Beginning on January 1, 2019, our data center revenue contracts will be accounted for in accordance with ASU 2016-02. ASU 2016-02 provides a practical expedient which allows lessors to account for nonlease components (such as power and connectivity, in the case of our data center business) with the related lease component if both the timing and pattern of transfer are the same for nonlease components and the lease component, and the lease component would be classified as an operating lease. The single combined component is accounted for under ASU 2016-02 if the lease component is the predominant component and is accounted for under ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) ("ASU 2014-09"), if the nonlease components are the predominant components.

New Accounting Pronouncements

In August 2018, the FASB issued ASU No. 2018-15, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract (a consensus of the FASB Emerging Issues Task Force) ("ASU 2018-15"). ASU 2018-15 aligns the accounting for costs incurred to implement a cloud computing arrangement that is a service arrangement with the guidance on capitalizing costs associated with developing or obtaining internal-use software. We adopted ASU 2018-15 on January 1, 2019. ASU 2018-15 did not have a material impact on our consolidated financial statements.

In February 2016, the FASB issued ASU 2016-02. We adopted ASU 2016-02 on January 1, 2019 on a modified retrospective basis. See Note 2.d. for information regarding the impact of the adoption of ASU 2016-02 on our consolidated financial statements.

Change in Presentation

Subsequent to our conversion to a REIT, we have historically classified gains on sale of real estate, net of tax, as a separate line on our consolidated statements of operations and excluded such amounts from our reported operating income. We presented such amounts net of tax as these gains were presented below the provision (benefit) for income taxes on our consolidated statements of operations. Commencing with the first quarter of 2019, we will present gains on sale of real estate as a component of operating income in the line item loss (gain) on disposal/write down of property, plant and equipment, net. Such amounts will be presented gross of tax with any tax impact presented within provision (benefit) for income taxes. All prior periods will be conformed to this presentation going forward. No gains on the sale of real estate were recognized during the three months ended March 31, 2019 or 2018.

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Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2019

Accounting Policies [Abstract]

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

Our effective tax rates for the three months ended March 31, 2019 and 2018 is as follows:

	Three Months Ended March 31,
	2019(1)		2018(2)
Effective Tax Rate	25.7	%	2.5	%

_______________________________________________________________________________

(1) The primary reconciling items between the federal statutory tax rate of 21.0% and our overall effective tax rate for the three months ended March 31, 2019 were the benefit derived from the dividends paid deduction and the impact of differences in the tax rates at which our foreign earnings are subject, including foreign exchange gains and losses in different jurisdictions with different tax rates.  

(2) The primary reconciling items between the federal statutory tax rate of 21.0% and our overall effective tax rate for the three months ended March 31, 2018 were the benefit derived from the dividends paid deduction, a discrete tax benefit of approximately $14,000 associated with the resolution of a tax matter and the impact of differences in the tax rates at which our foreign earnings are subject, including foreign exchange gains and losses in different jurisdictions with different tax rates.

Schedule of New Accounting Pronouncements and Changes in Accounting Principles

Deferred revenue liabilities are reflected as follows in our Condensed Consolidated Balance Sheets:

Description	Location in Balance Sheet	March 31, 2019		December 31, 2018
Deferred revenue - Current	Deferred revenue	$	266,314	$	264,823
Deferred revenue - Long-term	Other Long-term Liabilities	25,625		26,401

The costs of the initial intake of customer records into physical storage ("Intake Costs") and capitalized commissions asset (collectively, "Contract Fulfillment Costs") as of March 31, 2019 and December 31, 2018 are as follows:

		March 31, 2019							December 31, 2018
Description	Location in Balance Sheet	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Intake Costs asset	Other (within Other Assets, Net)	$	36,155	$	(21,041	)	$	15,114	$	39,748	$	(24,504	)	$	15,244
Capitalized commissions asset	Other (within Other Assets, Net)	52,485		(24,923		)	27,562		58,424		(34,637		)	23,787

Schedule of amortization expense associated with commissions asset and Intake Costs

Amortization expense associated with the Intake Costs asset and capitalized commissions asset for the three months ended March 31, 2019 and 2018 are as follows:

	Three Months Ended March 31,
	2019		2018
Intake Costs asset	$	2,679	$	2,730
Capitalized commissions asset	3,946		3,587

Schedule of changes in the carrying value of goodwill attributable to each reportable operating segment

The changes in the carrying value of goodwill attributable to each reportable operating segment for the three months ended March 31, 2019 are as follows:

	North American Records and Information Management Business		North American Data Management Business		Western European Business		Other International Business		Global Data Center Business			Corporate and Other Business			Total Consolidated
Goodwill balance, net of accumulated amortization as of December 31, 2018	$	2,251,795	$	493,491	$	381,806	$	818,223	$	425,956		$	69,759		$	4,441,030
Deductible goodwill acquired during the year	5,501		—		—		—		—			—			5,501
Non-deductible goodwill acquired during the year	—		—		4,991		3,767		—			1,874			10,632
Fair value and other adjustments(1)	31		—		92		3,350		(871		)	(468		)	2,134
Currency effects	3,921		1,067		1,393		1,126		(1,566		)	140			6,081
Goodwill balance, net accumulated amortization as of March 31, 2019	$	2,261,248	$	494,558	$	388,282	$	826,466	$	423,519		$	71,305		$	4,465,378
Accumulated Goodwill Impairment Balance as of December 31, 2018	$	85,909	$	—	$	46,500	$	—	$	—		$	3,011		$	135,420
Accumulated Goodwill Impairment Balance as of March 31, 2019	$	85,909	$	—	$	46,500	$	—	$	—		$	3,011		$	135,420

_______________________________________________________________________________

(1) Total fair value and other adjustments primarily include $2,565 in net adjustments related to property, plant and equipment, customer relationships and data center lease-based intangible assets and deferred income taxes and other liabilities offset by $431 of cash received related to certain acquisitions completed in 2018.

Components of amortizable intangible assets

The other finite-lived intangible assets as of March 31, 2019 and December 31, 2018 are as follows:

	March 31, 2019							December 31, 2018
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Other finite-lived intangible assets (included in Other, a component of other assets, net)	$	20,290	$	(15,794	)	$	4,496	$	20,310	$	(14,798	)	$	5,512

The gross carrying amount and accumulated amortization of our finite-lived intangible assets as of March 31, 2019 and December 31, 2018 are as follows:

	March 31, 2019							December 31, 2018
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Assets:
Customer relationship intangible assets	$	1,754,794	$	(482,971	)	$	1,271,823	$	1,718,919	$	(455,705	)	$	1,263,214
Customer inducements	51,405		(28,711		)	22,694		56,478		(34,181		)	22,297
Data center lease-based intangible assets(1)	265,834		(65,013		)	200,821		271,818		(50,807		)	221,011
Third-party commissions asset(2)	30,861		(737		)	30,124		30,071		(1,089		)	28,982
	$	2,102,894	$	(577,432	)	$	1,525,462	$	2,077,286	$	(541,782	)	$	1,535,504
Liabilities:
Data center below-market leases	$	12,715	$	(2,451	)	$	10,264	$	12,318	$	(1,642	)	$	10,676

_______________________________________________________________________________

(1) Includes data center in-place lease intangible assets, data center tenant relationship intangible assets and data center above-market in-place lease intangible assets.

(2) Third-party commissions asset is included in Other, a component of Other assets, net in the accompanying Condensed Consolidated Balance Sheets as of March 31, 2019 and December 31, 2018. The third-party commissions asset is primarily comprised of additional payments associated with the execution of future customer contracts through the one-year anniversary of the acquisition of IODC, as described in Note 3.

Schedule of amortization expenses

Amortization expense associated with finite-lived intangible assets, revenue reduction associated with the amortization of customer inducements and net revenue reduction associated with the amortization of data center above-market leases and data center below-market leases for the three months ended March 31, 2019 and 2018 are as follows:

	Three Months Ended March 31,
	2019		2018
Amortization expense included in depreciation and amortization associated with:
Customer relationship and customer inducement intangible assets	$	27,881	$	28,806
Data center in-place leases and tenant relationships	12,609		10,838
Third-party commissions asset and other finite-lived intangible assets	757		1,185
Revenue reduction associated with amortization of:
Customer inducements	$	2,740	$	2,585
Data center above-market leases and data center below-market leases	905		1,079

Operating and financing lease right-of-use assets and lease liabilities

Operating and financing lease right-of-use assets and lease liabilities as of March 31, 2019 and January 1, 2019 (date of adoption of ASU 2016-02) are as follows:

Description	Location in Balance Sheet	March 31, 2019		January 1, 2019 (Date of Adoption of ASU 2016-02)
Assets:
Operating lease right-of-use assets(1)	Operating lease right-of-use assets	$	1,791,536	$	1,825,721
Financing lease right-of-use assets, net of accumulated depreciation(2)	Property, plant and equipment, net	351,750		361,078
Total		$	2,143,286	$	2,186,799
Liabilities:
Current
Operating lease liabilities	Accrued expenses and other current liabilities	$	206,286	$	209,911
Financing lease liabilities	Current portion of long-term debt	51,222		50,437
Total current lease liabilities		257,508		260,348
Long-term
Operating lease liabilities	Long-term operating lease liabilities, net of current portion	1,656,659		1,685,771
Financing lease liabilities	Long-term Debt, net of current portion	338,728		350,263
Total long-term lease liabilities		1,995,387		2,036,034
Total		$	2,252,895	$	2,296,382

______________________________________________________________

(1) At March 31, 2019, these assets are comprised of approximately 98% real estate related assets (which include land, buildings and racking) and 2% non-real estate related assets (which include warehouse equipment, vehicles, furniture and fixtures and computer hardware and software).

(2) At March 31, 2019, these assets are comprised of approximately 66% real estate related assets and 34% non-real estate related assets.

Lease, Cost [Table Text Block]

Supplemental cash flow information relating to our leases for the three months ended March 31, 2019 is as follows:

Cash paid for amounts included in measurement of lease liabilities:	Three Months Ended March 31, 2019
Operating cash flows used in operating leases	$	83,676
Financing cash flows used in financing leases	$	16,675
Non-cash items:
Operating lease modifications and reassessments	$	1,842
New operating leases (including acquisitions)	$	21,535
Financing lease modifications and reassessments	$	—
New financing leases	$	7,523

Weighted average remaining lease terms and discount rates as of March 31, 2019 are as follows:

Remaining Lease Term:
Operating leases	11.1 Years
Financing leases	11.0 Years
Discount Rate:
Operating leases	7.1%
Financing leases	5.7%

The components of the lease expense for the three months ended March 31, 2019 is as follows:

Description	Location in Statement of Operations	Amount
Operating lease cost(1)	Cost of sales and Selling, general and administrative	$	111,906
Financing lease cost:
Depreciation of financing lease right-of-use assets	Depreciation and amortization	$	16,329
Interest expense for financing lease liabilities	Interest expense, net	6,142
Total financing lease cost		$	22,471

______________________________________________________________

(1) Of the $111,906 of operating lease cost incurred for the three months ended March 31, 2019, $108,601 is included within Cost of sales and $3,305 is included within Selling, general and administrative expenses. Operating lease cost includes variable lease costs of $25,489.

Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block]

The estimated minimum future lease payments as of December 31, 2018, are as follows:

Year	Operating Leases(1)		Sublease Income			Capital Leases(1)(2)
2019	$	323,454	$	(7,525	)	$	80,513
2020	293,276		(7,200		)	71,335
2021	267,379		(7,063		)	61,269
2022	246,128		(6,694		)	52,832
2023	221,808		(6,409		)	44,722
Thereafter	1,287,807		(6,279		)	377,750
Total minimum lease payments	2,639,852		$	(41,170	)	688,421
Less amounts representing interest						(241,248		)
Present value of finance lease obligations						$	447,173

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

The estimated minimum future lease payments as of December 31, 2018, are as follows:

Year	Operating Leases(1)		Sublease Income			Capital Leases(1)(2)
2019	$	323,454	$	(7,525	)	$	80,513
2020	293,276		(7,200		)	71,335
2021	267,379		(7,063		)	61,269
2022	246,128		(6,694		)	52,832
2023	221,808		(6,409		)	44,722
Thereafter	1,287,807		(6,279		)	377,750
Total minimum lease payments	2,639,852		$	(41,170	)	688,421
Less amounts representing interest						(241,248		)
Present value of finance lease obligations						$	447,173

The estimated minimum future lease payments as of March 31, 2019, are as follows:

Year	Operating Leases(1)			Sublease Income			Financing Leases(1)
2019 (excluding the three months ended March 31, 2019)	$	251,699		$	(6,039	)	$	59,411
2020	308,267			(7,337		)	68,333
2021	280,931			(7,228		)	59,710
2022	257,598			(6,851		)	49,997
2023	234,035			(6,548		)	39,643
Thereafter	1,409,241			(6,922		)	287,609
Total minimum lease payments	2,741,771			$	(40,925	)	564,703
Less amounts representing interest or imputed interest	(878,826		)				(174,753		)
Present value of lease obligations	1,862,945						$	389,950

_______________________________________________________________________________

(1) Estimated minimum future lease payments exclude variable common area maintenance charges, insurance and taxes. Differences in estimated lease payments between December 31, 2018 and March 31, 2019 are primarily related to adjustments to account for certain build to suit leases that were accounted for as financing obligations under ASC 840 but are accounted for as operating leases under ASU 2016-02 and foreign currency exchange rate impacts.

(2) Includes capital lease and financing obligations associated with build to suit lease transactions at December 31, 2018.

Finance Lease, Liability, Maturity [Table Text Block]

The estimated minimum future lease payments as of March 31, 2019, are as follows:

Year	Operating Leases(1)			Sublease Income			Financing Leases(1)
2019 (excluding the three months ended March 31, 2019)	$	251,699		$	(6,039	)	$	59,411
2020	308,267			(7,337		)	68,333
2021	280,931			(7,228		)	59,710
2022	257,598			(6,851		)	49,997
2023	234,035			(6,548		)	39,643
Thereafter	1,409,241			(6,922		)	287,609
Total minimum lease payments	2,741,771			$	(40,925	)	564,703
Less amounts representing interest or imputed interest	(878,826		)				(174,753		)
Present value of lease obligations	1,862,945						$	389,950

_______________________________________________________________________________

(1) Estimated minimum future lease payments exclude variable common area maintenance charges, insurance and taxes. Differences in estimated lease payments between December 31, 2018 and March 31, 2019 are primarily related to adjustments to account for certain build to suit leases that were accounted for as financing obligations under ASC 840 but are accounted for as operating leases under ASU 2016-02 and foreign currency exchange rate impacts.

Lessee, Operating Lease, Liability, Maturity [Table Text Block]

The estimated minimum future lease payments as of March 31, 2019, are as follows:

Year	Operating Leases(1)			Sublease Income			Financing Leases(1)
2019 (excluding the three months ended March 31, 2019)	$	251,699		$	(6,039	)	$	59,411
2020	308,267			(7,337		)	68,333
2021	280,931			(7,228		)	59,710
2022	257,598			(6,851		)	49,997
2023	234,035			(6,548		)	39,643
Thereafter	1,409,241			(6,922		)	287,609
Total minimum lease payments	2,741,771			$	(40,925	)	564,703
Less amounts representing interest or imputed interest	(878,826		)				(174,753		)
Present value of lease obligations	1,862,945						$	389,950

_______________________________________________________________________________

(1) Estimated minimum future lease payments exclude variable common area maintenance charges, insurance and taxes. Differences in estimated lease payments between December 31, 2018 and March 31, 2019 are primarily related to adjustments to account for certain build to suit leases that were accounted for as financing obligations under ASC 840 but are accounted for as operating leases under ASU 2016-02 and foreign currency exchange rate impacts.

Stock-based compensation expense for Employee Stock-Based Awards related to continuing operations

.

Summary of stock option activity

A summary of stock option activity for the three months ended March 31, 2019 is as follows:

	Stock Options
Outstanding at December 31, 2018	4,271,834
Granted	920,706
Exercised	(99,334	)
Forfeited	(6,007	)
Expired	(9,629	)
Outstanding at March 31, 2019	5,077,570
Options exercisable at March 31, 2019	3,258,982
Options expected to vest	1,691,146

Summary of restricted stock and RSU activity

The fair value of RSUs vested during the three months ended March 31, 2019 and 2018 is as follows:

	Three Months Ended March 31,
	2019		2018
Fair value of RSUs vested	$	15,333	$	15,330

A summary of RSU activity for the three months ended March 31, 2019 is as follows:

	RSUs
Non-vested at December 31, 2018	1,196,566
Granted	621,281
Vested	(453,167	)
Forfeited	(18,075	)
Non-vested at March 31, 2019	1,346,605

Schedule of performance units

The fair value of earned PUs that vested during the three months ended March 31, 2019 and 2018 is as follows:

	Three Months Ended March 31,
	2019		2018
Fair value of earned PUs that vested	$	6,503	$	3,033

Summary of Performance Unit (PU) activity

A summary of PU activity for the three months ended March 31, 2019 is as follows:

	Original PU Awards		PU Adjustment(1)		Total PU Awards
Non-vested at December 31, 2018	967,049		(299,948	)	667,101
Granted	380,856		—		380,856
Vested	(169,523	)	—		(169,523	)
Forfeited/Performance or Market Conditions Not Achieved	(4,816	)	(14,850	)	(19,666	)
Non-vested at March 31, 2019	1,173,566		(314,798	)	858,768

_______________________________________________________________________________

(1) Represents an increase or decrease in the number of original PUs awarded based on either the final performance criteria or market condition achievement at the end of the performance period of such PUs or a change in estimated awards based on the forecasted performance against the predefined targets.

Calculation of basic and diluted net income (loss) per share attributable to the entity

The calculation of basic and diluted income (loss) per share for the three months ended March 31, 2019 and 2018 is as follows:

	Three Months Ended March 31,
	2019			2018
Income (loss) from continuing operations	$	30,476		$	45,614
Less: Net income (loss) attributable to noncontrolling interests	891			468
Income (loss) from continuing operations (utilized in numerator of Earnings Per Share calculation)	$	29,585		$	45,146
(Loss) income from discontinued operations, net of tax	$	(24	)	$	(462	)
Net income (loss) attributable to Iron Mountain Incorporated	$	29,561		$	44,684
Weighted-average shares—basic	286,528,000			285,259,000
Effect of dilutive potential stock options	231,402			249,564
Effect of dilutive potential RSUs and PUs	732,421			484,314
Weighted-average shares—diluted	287,491,823			285,992,878
Earnings (losses) per share—basic:
Income (loss) from continuing operations	$	0.10		$	0.16
(Loss) income from discontinued operations, net of tax	—			—
Net income (loss) attributable to Iron Mountain Incorporated(1)	$	0.10		$	0.16
Earnings (losses) per share—diluted:
Income (loss) from continuing operations	$	0.10		$	0.16
(Loss) income from discontinued operations, net of tax	—			—
Net income (loss) attributable to Iron Mountain Incorporated(1)	$	0.10		$	0.16
Antidilutive stock options, RSUs and PUs, excluded from the calculation	3,985,161			3,242,141

_______________________________________________________________________________

(1) Columns may not foot due to rounding.

Assets and liabilities carried at fair value measured on a recurring basis

The assets and liabilities carried at fair value measured on a recurring basis as of March 31, 2019 and December 31, 2018, respectively, are as follows:

			Fair Value Measurements at March 31, 2019 Using
Description	Total Carrying Value at March 31, 2019		Quoted prices in active markets (Level 1)			Significant other observable inputs (Level 2)			Significant unobservable inputs (Level 3)
Money Market Funds(1)	$	1,739	$	—		$	1,739		$	—
Trading Securities	10,160		9,490		(2)	670		(3)	—
Derivative Assets (4)	23		—			23			—
Derivative Liabilities(4)	109		—			109			—
Interest Rate Swap Agreements Liabilities(5)	3,647		—			3,647			—

			Fair Value Measurements at December 31, 2018 Using
Description	Total Carrying Value at December 31, 2018		Quoted prices in active markets (Level 1)			Significant other observable inputs (Level 2)			Significant unobservable inputs (Level 3)
Time Deposits(1)	$	956	$	—		$	956		$	—
Trading Securities	10,753		10,248		(2)	505		(3)	—
Derivative Assets(4)	93		—			93			—
Interest Rate Swap Agreements Liabilities(5)	973		—			973			—

_______________________________________________________________________________

(1) Money market funds and time deposits are measured based on quoted prices for similar assets and/or subsequent transactions.

(2) Certain trading securities are measured at fair value using quoted market prices.

(3) Certain trading securities are measured based on inputs other than quoted market prices that are observable.

(4) Derivative assets and liabilities relate to short-term (six months or less) foreign currency contracts that we have entered into to hedge certain of our foreign exchange intercompany exposures. We calculate the value of such forward contracts by adjusting the spot rate utilized at the balance sheet date for translation purposes by an estimate of the forward points observed in active markets. As of March 31, 2019, we had outstanding forward contracts to (i) purchase 4,000 Euros and sell $4,610 United States dollars and (ii) purchase $4,515 United States dollars and sell 4,000 Euros. As of December 31, 2018, we had outstanding forward contracts to purchase 29,000 Euros and sell $33,374 United States dollars. We have not designated any of the forward contracts we have entered into as hedges.

(5) We have entered into interest rate swap agreements to limit our exposure to changes in interest rates on a portion of our floating rate indebtedness. As of March 31, 2019 and December 31, 2018, we have $350,000 in notional value of interest rate swap agreements outstanding, which expire in March 2022. Under the interest rate swap agreements, we receive variable rate interest payments associated with the notional amount of each interest rate swap, based upon one-month LIBOR, in exchange for the payment of fixed interest rate payments (at the fixed rate interest specified in the interest rate swap agreements). We have designated these interest rate swaps as cash flow hedges. Unrealized gains are recognized as assets while unrealized losses are recognized as liabilities. The fair value of the interest rate swaps are estimated using industry standard valuation models using market-based observable inputs, including interest rate curves.

Schedule of changes in accumulated other comprehensive items, net

The changes in accumulated other comprehensive items, net for the three months ended March 31, 2019 and 2018 are as follows:

	Three Months Ended March 31,
	2019									2018
	Foreign Currency Translation Adjustments			Fair Value Adjustments for Interest Rate Swap Agreements			Total			Foreign Currency Translation Adjustments			Fair Value Adjustments for Interest Rate Swap Agreements			Total
Beginning of Period	$	(264,691	)	$	(973	)	$	(265,664	)	$	(103,989	)	$	—		$	(103,989	)
Other comprehensive income (loss):
Foreign currency translation adjustments(1)	17,378			—			17,378			30,092			—			30,092
Fair value adjustments for interest rate swap agreements	—			(2,674		)	(2,674		)	—			(185		)	(185		)
Total other comprehensive income (loss)	17,378			(2,674		)	14,704			30,092			(185		)	29,907
End of Period	$	(247,313	)	$	(3,647	)	$	(250,960	)	$	(73,897	)	$	(185	)	$	(74,082	)

______________________________________________________________

(1) This amount includes foreign exchange (gains) losses of $(6,141) and $5,635 for the three months ended March 31, 2019 and 2018, respectively, related to the change in fair value of the portion of our Euro Notes (as defined and discussed more fully in Note 4) designated as a hedge of net investment of certain of our Euro denominated subsidiaries. For the three months ended March 31, 2019, we designated, on average, 271,146 Euros of our Euro Notes as a hedge of net investment of certain of our Euro denominated subsidiaries. For the three months ended March 31, 2018, we designated, on average, 164,244 Euros of our Euro Notes as a hedge of net investment of certain of our Euro denominated subsidiaries. As of March 31, 2019, cumulative net gains of $20,399 net of tax, are recorded in accumulated other comprehensive items, net associated with this net investment hedge.

Other expense (income), net

Other expense (income), net for the three months ended March 31, 2019 and 2018 consists of the following:

	Three Months Ended March 31,
	2019			2018
Foreign currency transaction losses (gains), net	$	17,697		$	21,785
Other, net	(2,487		)	(1,634		)
	$	15,210		$	20,151

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Acquisitions (Tables)

3 Months Ended

Mar. 31, 2019

Business Combinations [Abstract]

Business Acquisition, Pro Forma Information

	Three Months Ended March 31, 2018
Total Revenues	$	1,045,948
Income from Continuing Operations	$	55,566
Per Share Income from Continuing Operations - Basic	$	0.20
Per Share Income from Continuing Operations - Diluted	$	0.19

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed

A summary of the cumulative consideration paid and the preliminary allocation of the purchase price paid for all of our 2019 acquisitions through March 31, 2019 is as follows:

	Three Months Ended March 31, 2019
Cash Paid (gross of cash acquired)(1)	$	34,198
Purchase Price Holdbacks and Other	1,042
Total Consideration	35,240
Fair Value of Identifiable Assets Acquired:
Cash	2,273
Accounts Receivable, Prepaid Expenses and Other Assets	2,845
Property, Plant and Equipment(2)	4,039
Customer Relationship Intangible Assets	13,589
Operating Lease Right-of-Use Assets	10,541
Accounts Payable, Accrued Expenses and Other Liabilities	(2,065		)
Operating Lease Liabilities	(10,541		)
Deferred Income Taxes	(1,574		)
Total Fair Value of Identifiable Net Assets Acquired	19,107
Goodwill Initially Recorded(3)	$	16,133

_______________________________________________________________________________

(1) Included in cash paid for acquisitions in the Condensed Consolidated Statement of Cash Flows for the three months ended March 31, 2019 is net cash acquired of $2,273 and contingent and other payments, net of $7,498 related to acquisitions made in previous years.

(2) Consists primarily of leasehold improvements, racking structures and warehouse equipment. These assets are depreciated using the straight-line method with the useful lives as noted in Note 2.f. to Notes to Consolidated Financial Statements included in our Annual Report.

(3) The goodwill associated with acquisitions is primarily attributable to the assembled workforce, expanded market opportunities and costs and other operating synergies anticipated upon the integration of the operations of us and the acquired businesses.

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Debt (Tables)

3 Months Ended

Mar. 31, 2019

Debt Disclosure [Abstract]

Schedule Of Net Cash Position In Cash Pool Agreements [Table Text Block]

The approximate amount of the net cash position for our QRS Cash Pool and the TRS Cash Pool and the approximate amount of the gross position and outstanding debit balances for each of these pools as of March 31, 2019 and December 31, 2018 are as follows:

	March 31, 2019							December 31, 2018
	Gross Cash Position		Outstanding Debit Balances			Net Cash Position		Gross Cash Position		Outstanding Debit Balances			Net Cash Position
QRS Cash Pool	$	271,400	$	(269,400	)	$	2,000	$	300,800	$	(298,800	)	$	2,000
TRS Cash Pool	281,100		(277,900		)	3,200		$	281,500	(279,300		)	2,200

Schedule of carrying amount and fair value of long-term debt instruments

Long-term debt is as follows:

	March 31, 2019											December 31, 2018
	Debt (inclusive of discount)			Unamortized Deferred Financing Costs			Carrying Amount			Fair Value		Debt (inclusive of discount)				Unamortized Deferred Financing Costs			Carrying Amount			Fair Value
Revolving Credit Facility(1)	$	1,139,566		$	(13,332	)	$	1,126,234		$	1,139,566	$	793,832			$	(14,117	)	$	779,715		$	793,832
Term Loan A(1)	237,500			—			237,500			237,500		240,625				—			240,625			240,625
Term Loan B(2)	691,476			(8,430		)	683,046			670,478		693,169				(8,742		)	684,427			660,013
Australian Dollar Term Loan (the "AUD Term Loan")(3)	234,000			(2,893		)	231,107			235,587		233,955				(3,084		)	230,871			235,645
UK Bilateral Revolving Credit Facility ("UK Bilateral Facility")(4)	182,450			(2,255		)	180,195			182,450		178,299				(2,357		)	175,942			178,299
43/8% Senior Notes due 2021 (the "43/8% Notes")(5)	500,000			(3,725		)	496,275			502,500		500,000				(4,155		)	495,845			488,750
6% Senior Notes due 2023 (the "6% Notes due 2023")(5)	600,000			(4,851		)	595,149			615,000		600,000				(5,126		)	594,874			606,000
53/8% CAD Senior Notes due 2023 (the "CAD Notes")	187,262			(2,424		)	184,838			189,444		183,403				(2,506		)	180,897			186,154
53/4% Senior Subordinated Notes due 2024 (the "53/4% Notes")(5)	1,000,000			(7,439		)	992,561			1,010,000		1,000,000				(7,782		)	992,218			940,000
3% Euro Senior Notes due 2025 (the "Euro Notes")(5)	336,557			(3,941		)	332,616			337,684		343,347				(4,098		)	339,249			321,029
37/8% GBP Senior Notes due 2025 (the "GBP Notes")	521,286			(6,480		)	514,806			495,852		509,425				(6,573		)	502,852			453,811
53/8% Senior Notes due 2026 (the "53/8% Notes")	250,000			(3,078		)	246,922			246,875		250,000				(3,185		)	246,815			224,375
47/8% Senior Notes due 2027 (the "47/8% Notes")(5)	1,000,000			(12,086		)	987,914			957,500		1,000,000				(12,442		)	987,558			855,000
51/4% Senior Notes due 2028 (the "51/4% Notes")(5)	825,000			(10,628		)	814,372			798,188		825,000				(10,923		)	814,077			713,625
Real Estate Mortgages, Financing Lease Liabilities and Other	566,677			(431		)	566,246			566,677		606,702				(171		)	606,531			606,702
Accounts Receivable Securitization Program(6)	252,373			(184		)	252,189			252,373		221,673				(218		)	221,455			221,673
Mortgage Securitization Program(7)	50,000			(1,091		)	48,909			50,000		50,000				(1,128		)	48,872			50,000
Total Long-term Debt	8,574,147			(83,268		)	8,490,879					8,229,430			—	(86,607		)	8,142,823
Less Current Portion	(125,142		)	—			(125,142		)			(126,406		)		—			(126,406		)
Long-term Debt, Net of Current Portion	$	8,449,005		$	(83,268	)	$	8,365,737				$	8,103,024			$	(86,607	)	$	8,016,417

______________________________________________________________

(1) Collectively, the credit agreement ("Credit Agreement"). The Credit Agreement consists of a revolving credit facility (the "Revolving Credit Facility") and a term loan (the "Term Loan A"). The Credit Agreement is scheduled to mature on June 3, 2023. Of the $1,139,566 of outstanding borrowings under the Revolving Credit Facility as of March 31, 2019, 965,800 was denominated in United States dollars, 94,200 was denominated in Canadian dollars and 92,000 was denominated in Euros. In addition, we also had various outstanding letters of credit totaling $37,271. The remaining amount available for borrowing under the Revolving Credit Facility as of March 31, 2019 was $573,163 (which amount represents the maximum availability as of such date). The average interest rate in effect under the Credit Agreement was 4.0% as of March 31, 2019. The average interest rate in effect under the Revolving Credit Facility as of March 31, 2019 was 4.0% and the interest rate in effect under Term Loan A as of March 31, 2019 was 4.2%.

(2) In connection with the 2018 First Amendment (as defined in Note 5 to Notes to Consolidated Financial Statements included in our Annual Report), Iron Mountain Information Management, LLC ("IMIM") entered into an incremental term loan activation notice (the "Activation Notice") with certain lenders pursuant to which the lenders party to the Activation Notice agreed to provide commitments to fund an incremental term loan B in the amount of $700,000 (the "Term Loan B"). On March 26, 2018, IMIM borrowed the full amount of the Term Loan B. The Term Loan B is scheduled to mature on January 2, 2026. The interest rate in effect as of March 31, 2019 was 4.3%. The amount of debt for the Term Loan B reflects an unamortized original issue discount of $1,524 and $1,581 as of March 31, 2019 and December 31, 2018, respectively.

(3) The interest rate in effect as of March 31, 2019 was 5.7%. We had 331,875 Australian dollars outstanding on the AUD Term Loan as of March 31, 2019. The amount of debt for the AUD Term Loan reflects an unamortized original issue discount of $1,587 and $1,690 as of March 31, 2019 and December 31, 2018, respectively.

(4) The interest rate in effect as of March 31, 2019 was 3.2%.

(5) Collectively, the "Parent Notes".

(6) The interest rate in effect as of March 31, 2019 was 3.5%.

(7) The interest rate in effect as of March 31, 2019 was 3.5%.

Schedule of Leverage and Fixed Charge Ratios

Our leverage and fixed charge coverage ratios under the Credit Agreement as of March 31, 2019 and December 31, 2018, as well as our leverage ratio under our indentures as of March 31, 2019 and December 31, 2018 are as follows:

	March 31, 2019	December 31, 2018	Maximum/Minimum Allowable
Net total lease adjusted leverage ratio	5.8	5.6	Maximum allowable of 6.5
Net secured debt lease adjusted leverage ratio	2.8	2.6	Maximum allowable of 4.0
Bond leverage ratio (not lease adjusted)	6.1	5.8	Maximum allowable of 6.5-7.0(1)
Fixed charge coverage ratio	2.2	2.2	Minimum allowable of 1.5

______________________________________________________________

(1) The maximum allowable leverage ratio under our indentures for the 4⁷/₈% Notes, the GBP Notes and the 5¹/₄% Notes is 7.0, while the maximum allowable leverage ratio under the indentures pertaining to our remaining senior and senior subordinated notes is 6.5. In certain instances as provided in our indentures, we have the ability to incur additional indebtedness that would result in our bond leverage ratio exceeding the maximum allowable ratio under our indentures and still remain in compliance with the covenant.

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Selected Consolidated Financial Statements of Parent, Guarantors, Canada Company and Non-Guarantors (Tables)

3 Months Ended

Mar. 31, 2019

Selected Consolidated Financial Statements of Parent, Guarantors, Canada Company and Non-Guarantors

Schedule of selected consolidated Balance sheet statements of Parent, Guarantors, Canada Company and Non-Guarantors

CONDENSED CONSOLIDATED BALANCE SHEETS

	March 31, 2019
	Parent		Guarantors		Non- Guarantors		Eliminations			Consolidated
Assets
Current Assets:
Cash and cash equivalents(1)	$	11	$	122,114	$	109,991	$	(70,641	)	$	161,475
Accounts receivable	—		37,598		799,923		—			837,521
Intercompany receivable	—		1,032,582		—		(1,032,582		)	—
Prepaid expenses and other	—		110,223		100,660		(29		)	210,854
Total Current Assets	11		1,302,517		1,010,574		(1,103,252		)	1,209,850
Property, Plant and Equipment, Net	168		2,999,744		1,525,671		—			4,525,583
Other Assets, Net:
Long-term notes receivable from affiliates and intercompany receivable	5,009,984		—		—		(5,009,984		)	—
Investment in subsidiaries	1,926,435		1,017,247		—		(2,943,682		)	—
Goodwill	—		2,857,855		1,607,523		—			4,465,378
Operating lease right-of-use assets	—		895,920		895,616		—			1,791,536
Other	5		976,403		720,608		—			1,697,016
Total Other Assets, Net	6,936,424		5,747,425		3,223,747		(7,953,666		)	7,953,930
Total Assets	$	6,936,603	$	10,049,686	$	5,759,992	$	(9,056,918	)	$	13,689,363
Liabilities and Equity
Intercompany Payable	$	729,843	$	—	$	302,739	$	(1,032,582	)	$	—
Debit Balances Under Cash Pools	—		—		70,641		(70,641		)	—
Current Portion of Long-Term Debt	—		55,940		69,231		(29		)	125,142
Total Other Current Liabilities (includes current portion of operating lease liabilities)	224,825		632,699		532,467		—			1,389,991
Long-Term Debt, Net of Current Portion	4,218,887		2,212,686		1,934,164		—			8,365,737
Long-Term Operating Lease Liabilities, Net of Current Portion	—		832,007		824,652		—			1,656,659
Long-Term Notes Payable to Affiliates and Intercompany Payable	—		5,009,984		—		(5,009,984		)	—
Other Long-term Liabilities	3,647		51,575		262,776		—			317,998
Commitments and Contingencies (See Note 7)
Redeemable Noncontrolling Interests	—		—		73,102		—			73,102
Total Iron Mountain Incorporated Stockholders' Equity	1,759,401		1,254,795		1,688,887		(2,943,682		)	1,759,401
Noncontrolling Interests	—		—		1,333		—			1,333
Total Equity	1,759,401		1,254,795		1,690,220		(2,943,682		)	1,760,734
Total Liabilities and Equity	$	6,936,603	$	10,049,686	$	5,759,992	$	(9,056,918	)	$	13,689,363

______________________________________________________________

(1) Included within Cash and Cash Equivalents at March 31, 2019 is approximately $76,000 and $0 of cash on deposit associated with our Cash Pools for the Guarantors and Non-Guarantors, respectively.

CONDENSED CONSOLIDATED BALANCE SHEETS (Continued)

	December 31, 2018
	Parent		Guarantors		Non- Guarantors		Eliminations			Consolidated
Assets
Current Assets:
Cash and cash equivalents(1)	$	132	$	61,650	$	169,318	$	(65,615	)	$	165,485
Accounts receivable	—		47,900		798,989		—			846,889
Intercompany receivable	—		818,463		—		(818,463		)	—
Prepaid expenses and other	93		108,879		86,797		(29		)	195,740
Total Current Assets	225		1,036,892		1,055,104		(884,107		)	1,208,114
Property, Plant and Equipment, Net	190		3,002,104		1,487,263		—			4,489,557
Other Assets, Net:
Long-term notes receivable from affiliates and intercompany receivable	4,954,686		—		—		(4,954,686		)	—
Investment in subsidiaries	1,885,174		1,006,144		—		(2,891,318		)	—
Goodwill	—		2,858,539		1,582,491		—			4,441,030
Other	—		979,483		734,063		—			1,713,546
Total Other Assets, Net	6,839,860		4,844,166		2,316,554		(7,846,004		)	6,154,576
Total Assets	$	6,840,275	$	8,883,162	$	4,858,921	$	(8,730,111	)	$	11,852,247
Liabilities and Equity
Intercompany Payable	$	462,927	$	—	$	355,536	$	(818,463	)	$	—
Debit Balances Under Cash Pools	—		10,612		55,003		(65,615		)	—
Current Portion of Long-Term Debt	—		63,703		62,732		(29		)	126,406
Total Other Current Liabilities	268,373		616,826		451,073		—			1,336,272
Long-Term Debt, Net of Current Portion	4,223,822		1,877,649		1,914,946		—			8,016,417
Long-Term Notes Payable to Affiliates and Intercompany Payable	—		4,954,686		—		(4,954,686		)	—
Other Long-term Liabilities	973		115,994		300,064		—			417,031
Commitments and Contingencies (See Note 7)
Redeemable Noncontrolling Interests	—		—		70,532		—			70,532
Total Iron Mountain Incorporated Stockholders' Equity	1,884,180		1,243,692		1,647,626		(2,891,318		)	1,884,180
Noncontrolling Interests	—		—		1,409		—			1,409
Total Equity	1,884,180		1,243,692		1,649,035		(2,891,318		)	1,885,589
Total Liabilities and Equity	$	6,840,275	$	8,883,162	$	4,858,921	$	(8,730,111	)	$	11,852,247

______________________________________________________________

(1) Included within Cash and Cash Equivalents at December 31, 2018 is approximately $57,200 and $12,700 of cash on deposit associated with our Cash Pools for the Guarantors and Non-Guarantors, respectively.

Schedule of selected consolidated Income statements of Parent, Guarantors, Canada Company and Non-Guarantors

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS)

	Three Months Ended March 31, 2019
	Parent			Guarantors			Non- Guarantors		Eliminations			Consolidated
Revenues:
Storage rental	$	—		$	403,741		$	259,233	$	—		$	662,974
Service	—			239,693			151,196		—			390,889
Intercompany revenues	—			1,154			4,923		(6,077		)	—
Total Revenues	—			644,588			415,352		(6,077		)	1,053,863
Operating Expenses:
Cost of sales (excluding depreciation and amortization)	—			263,137			198,407		—			461,544
Intercompany	—			4,923			1,154		(6,077		)	—
Selling, general and administrative	87			187,822			82,650		—			270,559
Depreciation and amortization	23			102,954			59,506		—			162,483
(Gain) Loss on disposal/write-down of property, plant and equipment, net	—			574			28		—			602
Total Operating Expenses	110			559,410			341,745		(6,077		)	895,188
Operating (Loss) Income	(110		)	85,178			73,607		—			158,675
Interest Expense (Income), Net(1)	49,625			4,057			48,754		—			102,436
Other Expense (Income), Net	182			527			14,501		—			15,210
(Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes	(49,917		)	80,594			10,352		—			41,029
Provision (Benefit) for Income Taxes	—			1,301			9,252		—			10,553
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax	(79,478		)	4,158			—		75,320			—
Income (Loss) from Continuing Operations	29,561			75,135			1,100		(75,320		)	30,476
(Loss) Income from Discontinued Operations, Net of Tax	—			(24		)	—		—			(24		)
Net Income (Loss)	29,561			75,111			1,100		(75,320		)	30,452
Less: Net Income (Loss) Attributable to Noncontrolling Interests	—			—			891		—			891
Net Income (Loss) Attributable to Iron Mountain Incorporated	$	29,561		$	75,111		$	209	$	(75,320	)	$	29,561
Net Income (Loss)	$	29,561		$	75,111		$	1,100	$	(75,320	)	$	30,452
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustments	6,141			—			12,050		—			18,191
Change in fair value of interest rate swap agreements	(2,674		)	—			—		—			(2,674		)
Equity in Other Comprehensive (Loss) Income of Subsidiaries	11,237			7,156			—		(18,393		)	—
Total Other Comprehensive Income (Loss)	14,704			7,156			12,050		(18,393		)	15,517
Comprehensive Income (Loss)	44,265			82,267			13,150		(93,713		)	45,969
Comprehensive (Loss) Income Attributable to Noncontrolling Interests	—			—			1,704		—			1,704
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	$	44,265		$	82,267		$	11,446	$	(93,713	)	$	44,265

_____________________________________________________________

(1) Included within Interest Expense (Income), Net are intercompany management fees and royalty fees, which are eliminated in our consolidated financial statements.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Continued)

	Three Months Ended March 31, 2018
	Parent			Guarantors			Non- Guarantors			Eliminations			Consolidated
Revenues:
Storage rental	$	—		$	396,476		$	254,673		$	—		$	651,149
Service	—			230,230			161,079			—			391,309
Intercompany revenues	—			1,205			4,491			(5,696		)	—
Total Revenues	—			627,911			420,243			(5,696		)	1,042,458
Operating Expenses:
Cost of sales (excluding depreciation and amortization)	—			246,163			202,558			—			448,721
Intercompany cost of sales	—			4,491			1,205			(5,696		)	—
Selling, general and administrative	43			185,348			84,339			—			269,730
Depreciation and amortization	33			102,446			58,099			—			160,578
(Gain) Loss on disposal/write-down of property, plant and equipment, net	—			(356		)	(774		)	—			(1,130		)
Total Operating Expenses	76			538,092			345,427			(5,696		)	877,899
Operating (Loss) Income	(76		)	89,819			74,816			—			164,559
Interest Expense (Income), Net(1)	49,941			(1,508		)	49,193			—			97,626
Other (Income) Expense, Net	(1,157		)	1,560			19,748			—			20,151
(Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes	(48,860		)	89,767			5,875			—			46,782
(Benefit) Provision for Income Taxes	—			(6,712		)	7,880			—			1,168
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax	(93,544		)	2,865			—			90,679			—
Income (Loss) from Continuing Operations	44,684			93,614			(2,005		)	(90,679		)	45,614
(Loss) Income from Discontinued Operations	—			(422		)	(40		)	—			(462		)
Net Income (Loss)	44,684			93,192			(2,045		)	(90,679		)	45,152
Less: Net Income (Loss) Attributable to Noncontrolling Interests	—			—			468			—			468
Net Income (Loss) Attributable to Iron Mountain Incorporated	$	44,684		$	93,192		$	(2,513	)	$	(90,679	)	$	44,684
Net Income (Loss)	$	44,684		$	93,192		$	(2,045	)	$	(90,679	)	$	45,152
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustments	(5,635		)	—			37,286			—			31,651
Change in fair value of interest rate swap agreements	(185		)	—			—			—			(185		)
Equity in Other Comprehensive Income (Loss) of Subsidiaries	35,732			38,336			—			(74,068		)	—
Total Other Comprehensive Income (Loss)	29,912			38,336			37,286			(74,068		)	31,466
Comprehensive Income (Loss)	74,596			131,528			35,241			(164,747		)	76,618
Comprehensive Income (Loss) Attributable to Noncontrolling Interests	—			—			2,027			—			2,027
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	$	74,596		$	131,528		$	33,214		$	(164,747	)	$	74,591

_____________________________________________________________

(1) Included within Interest Expense (Income), Net are intercompany management fees and royalty fees, which are eliminated in our consolidated financial statements.

Schedule of selected consolidated Comprehensive Income statements of Parent, Guarantors, Canada Company and Non-Guarantors

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS)

	Three Months Ended March 31, 2019
	Parent			Guarantors			Non- Guarantors		Eliminations			Consolidated
Revenues:
Storage rental	$	—		$	403,741		$	259,233	$	—		$	662,974
Service	—			239,693			151,196		—			390,889
Intercompany revenues	—			1,154			4,923		(6,077		)	—
Total Revenues	—			644,588			415,352		(6,077		)	1,053,863
Operating Expenses:
Cost of sales (excluding depreciation and amortization)	—			263,137			198,407		—			461,544
Intercompany	—			4,923			1,154		(6,077		)	—
Selling, general and administrative	87			187,822			82,650		—			270,559
Depreciation and amortization	23			102,954			59,506		—			162,483
(Gain) Loss on disposal/write-down of property, plant and equipment, net	—			574			28		—			602
Total Operating Expenses	110			559,410			341,745		(6,077		)	895,188
Operating (Loss) Income	(110		)	85,178			73,607		—			158,675
Interest Expense (Income), Net(1)	49,625			4,057			48,754		—			102,436
Other Expense (Income), Net	182			527			14,501		—			15,210
(Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes	(49,917		)	80,594			10,352		—			41,029
Provision (Benefit) for Income Taxes	—			1,301			9,252		—			10,553
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax	(79,478		)	4,158			—		75,320			—
Income (Loss) from Continuing Operations	29,561			75,135			1,100		(75,320		)	30,476
(Loss) Income from Discontinued Operations, Net of Tax	—			(24		)	—		—			(24		)
Net Income (Loss)	29,561			75,111			1,100		(75,320		)	30,452
Less: Net Income (Loss) Attributable to Noncontrolling Interests	—			—			891		—			891
Net Income (Loss) Attributable to Iron Mountain Incorporated	$	29,561		$	75,111		$	209	$	(75,320	)	$	29,561
Net Income (Loss)	$	29,561		$	75,111		$	1,100	$	(75,320	)	$	30,452
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustments	6,141			—			12,050		—			18,191
Change in fair value of interest rate swap agreements	(2,674		)	—			—		—			(2,674		)
Equity in Other Comprehensive (Loss) Income of Subsidiaries	11,237			7,156			—		(18,393		)	—
Total Other Comprehensive Income (Loss)	14,704			7,156			12,050		(18,393		)	15,517
Comprehensive Income (Loss)	44,265			82,267			13,150		(93,713		)	45,969
Comprehensive (Loss) Income Attributable to Noncontrolling Interests	—			—			1,704		—			1,704
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	$	44,265		$	82,267		$	11,446	$	(93,713	)	$	44,265

_____________________________________________________________

(1) Included within Interest Expense (Income), Net are intercompany management fees and royalty fees, which are eliminated in our consolidated financial statements.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Continued)

	Three Months Ended March 31, 2018
	Parent			Guarantors			Non- Guarantors			Eliminations			Consolidated
Revenues:
Storage rental	$	—		$	396,476		$	254,673		$	—		$	651,149
Service	—			230,230			161,079			—			391,309
Intercompany revenues	—			1,205			4,491			(5,696		)	—
Total Revenues	—			627,911			420,243			(5,696		)	1,042,458
Operating Expenses:
Cost of sales (excluding depreciation and amortization)	—			246,163			202,558			—			448,721
Intercompany cost of sales	—			4,491			1,205			(5,696		)	—
Selling, general and administrative	43			185,348			84,339			—			269,730
Depreciation and amortization	33			102,446			58,099			—			160,578
(Gain) Loss on disposal/write-down of property, plant and equipment, net	—			(356		)	(774		)	—			(1,130		)
Total Operating Expenses	76			538,092			345,427			(5,696		)	877,899
Operating (Loss) Income	(76		)	89,819			74,816			—			164,559
Interest Expense (Income), Net(1)	49,941			(1,508		)	49,193			—			97,626
Other (Income) Expense, Net	(1,157		)	1,560			19,748			—			20,151
(Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes	(48,860		)	89,767			5,875			—			46,782
(Benefit) Provision for Income Taxes	—			(6,712		)	7,880			—			1,168
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax	(93,544		)	2,865			—			90,679			—
Income (Loss) from Continuing Operations	44,684			93,614			(2,005		)	(90,679		)	45,614
(Loss) Income from Discontinued Operations	—			(422		)	(40		)	—			(462		)
Net Income (Loss)	44,684			93,192			(2,045		)	(90,679		)	45,152
Less: Net Income (Loss) Attributable to Noncontrolling Interests	—			—			468			—			468
Net Income (Loss) Attributable to Iron Mountain Incorporated	$	44,684		$	93,192		$	(2,513	)	$	(90,679	)	$	44,684
Net Income (Loss)	$	44,684		$	93,192		$	(2,045	)	$	(90,679	)	$	45,152
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustments	(5,635		)	—			37,286			—			31,651
Change in fair value of interest rate swap agreements	(185		)	—			—			—			(185		)
Equity in Other Comprehensive Income (Loss) of Subsidiaries	35,732			38,336			—			(74,068		)	—
Total Other Comprehensive Income (Loss)	29,912			38,336			37,286			(74,068		)	31,466
Comprehensive Income (Loss)	74,596			131,528			35,241			(164,747		)	76,618
Comprehensive Income (Loss) Attributable to Noncontrolling Interests	—			—			2,027			—			2,027
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	$	74,596		$	131,528		$	33,214		$	(164,747	)	$	74,591

_____________________________________________________________

(1) Included within Interest Expense (Income), Net are intercompany management fees and royalty fees, which are eliminated in our consolidated financial statements.

Schedule of selected consolidated cash flow statements of Parent, Guarantors, Canada Company and Non-Guarantors

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

	Three Months Ended March 31, 2019
	Parent			Guarantors			Non- Guarantors			Eliminations			Consolidated
Cash Flows from Operating Activities:
Cash Flows from Operating Activities—Continuing Operations	$	(68,310	)	$	116,235		$	69,142		$	—		$	117,067
Cash Flows from Operating Activities—Discontinued Operations	—			—			—			—			—
Cash Flows from Operating Activities	(68,310		)	116,235			$	69,142		$	—		$	117,067
Cash Flows from Investing Activities:
Capital expenditures	—			(84,766		)	(99,999		)	—			(184,765		)
Cash paid for acquisitions, net of cash acquired	—			(9,508		)	(29,915		)	—			(39,423		)
Intercompany loans to subsidiaries	252,175			22,859			—			(275,034		)	—
Acquisitions of customer relationships, customer inducements and data center lease-based intangibles	—			(49,301		)	(18,611		)	—			(67,912		)
Investments in joint ventures (see Note 9)	—			(19,222		)	—			—			(19,222		)
Proceeds from sales of property and equipment and other, net	—			36			69			—			105
Cash Flows from Investing Activities—Continuing Operations	252,175			(139,902		)	(148,456		)	(275,034		)	(311,217		)
Cash Flows from Investing Activities—Discontinued Operations	—			—			—			—			—
Cash Flows from Investing Activities	252,175			(139,902		)	(148,456		)	(275,034		)	(311,217		)
Cash Flows from Financing Activities:
Repayment of revolving credit facility, term loan facilities and other debt	—			(410,563		)	(940,679		)	—			(1,351,242		)
Proceeds from revolving credit facility, term loan facilities and other debt	—			734,243			989,219			—			1,723,462
Debit (payments) balances under cash pools	—			(10,612		)	15,638			(5,026		)	—
Debt (repayment to) financing from and equity (distribution to) contribution from noncontrolling interests, net	—			—			(498		)	—			(498		)
Intercompany loans from parent	—			(228,937		)	(46,097		)	275,034			—
Parent cash dividends	(178,023		)	—			—			—			(178,023		)
Net (payments) proceeds associated with employee stock-based awards	(5,963		)	—			—			—			(5,963		)
Cash Flows from Financing Activities—Continuing Operations	(183,986		)	84,131			17,583			270,008			187,736
Cash Flows from Financing Activities—Discontinued Operations	—			—			—			—			—
Cash Flows from Financing Activities	(183,986		)	84,131			17,583			270,008			187,736
Effect of exchange rates on cash and cash equivalents	—			—			2,404			—			2,404
(Decrease) Increase in cash and cash equivalents	(121		)	60,464			(59,327		)	(5,026		)	(4,010		)
Cash and cash equivalents, including Restricted Cash, beginning of period	132			61,650			169,318			(65,615		)	165,485
Cash and cash equivalents, including Restricted Cash, end of period	$	11		$	122,114		$	109,991		$	(70,641	)	$	161,475

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS(Continued)

	Three Months Ended March 31, 2018
	Parent			Guarantors			Non- Guarantors			Eliminations			Consolidated
Cash Flows from Operating Activities:
Cash Flows from Operating Activities—Continuing Operations	$	(66,516	)	$	96,674		$	61,410		$	—		$	91,568
Cash Flows from Operating Activities—Discontinued Operations	—			—			—			—			—
Cash Flows from Operating Activities	(66,516		)	96,674			61,410			—			91,568
Cash Flows from Investing Activities:
Capital expenditures	—			(62,148		)	(33,457		)	—			(95,605		)
Cash paid for acquisitions, net of cash acquired	—			(1,315,549		)	(113,425		)	—			(1,428,974		)
Intercompany loans to subsidiaries	157,737			208,443			—			(366,180		)	—
Acquisitions of customer relationships, customer inducements and data center lease-based intangibles	—			(11,874		)	(6,172		)	—			(18,046		)
Proceeds from sales of property and equipment and other, net	—			(19,466		)	79			—			(19,387		)
Cash Flows from Investing Activities—Continuing Operations	157,737			(1,200,594		)	(152,975		)	(366,180		)	(1,562,012		)
Cash Flows from Investing Activities—Discontinued Operations	—			—			—			—			—
Cash Flows from Investing Activities	157,737			(1,200,594		)	(152,975		)	(366,180		)	(1,562,012		)
Cash Flows from Financing Activities:
Repayment of revolving credit facility, term loan facilities and other debt	—			(2,308,119		)	(2,102,537		)	—			(4,410,656		)
Proceeds from revolving credit facility, term loan facilities and other debt	—			3,067,988			2,428,503			—			5,496,491
Debit (payments) balances under cash pools	—			(51,946		)	(11,733		)	63,679			—
Debt (repayment to) financing from and equity (distribution to) contribution from noncontrolling interests, net	—			—			(561		)	—			(561		)
Intercompany loans from parent	—			(154,184		)	(211,996		)	366,180			—
Parent cash dividends	(169,006		)	—			—			—			(169,006		)
Net (payments) proceeds associated with employee stock-based awards	(5,950		)	—			—			—			(5,950		)
Net proceeds associated with the Over-Allotment Option exercise	76,192			—			—			—			76,192
Net proceeds associated with the At the Market (ATM) Program	8,716			—			—			—			8,716
Payment of debt financing and stock issuance costs	(412		)	(9,075		)	(487		)	—			(9,974		)
Cash Flows from Financing Activities—Continuing Operations	(90,460		)	544,664			101,189			429,859			985,252
Cash Flows from Financing Activities—Discontinued Operations	—			—			—			—			—
Cash Flows from Financing Activities	(90,460		)	544,664			101,189			429,859			985,252
Effect of exchange rates on cash and cash equivalents	—			—			1,984			—			1,984
Increase (Decrease) in cash and cash equivalents	761			(559,256		)	11,608			63,679			(483,208		)
Cash and cash equivalents, including Restricted Cash, beginning of period	2,433			634,317			383,675			(94,726		)	925,699
Cash and cash equivalents, including Restricted Cash, end of period	$	3,194		$	75,061		$	395,283		$	(31,047	)	$	442,491

XML

Segment Information (Tables)

3 Months Ended

Mar. 31, 2019

Segment Reporting [Abstract]

Schedule of analysis of business segment information and reconciliation

An analysis of our business segment information and reconciliation to the accompanying Condensed Consolidated Financial Statements is as follows:

	North American Records and Information Management Business		North American Data Management Business		Western European Business		Other International Business		Global Data Center Business		Corporate and Other Business			Total Consolidated
As of and for the Three Months Ended March 31, 2019
Total Revenues	$	527,380	$	96,747	$	128,753	$	200,956	$	61,536	$	38,491		$	1,053,863
Storage Rental	306,986		66,572		80,695		129,473		59,718		19,530			662,974
Service	220,394		30,175		48,058		71,483		1,818		18,961			390,889
Depreciation and Amortization	60,002		10,202		15,257		30,599		31,632		14,791			162,483
Depreciation	45,752		8,013		10,947		18,218		19,013		12,668			114,611
Amortization	14,250		2,189		4,310		12,381		12,619		2,123			47,872
Adjusted EBITDA	223,683		50,552		39,209		58,124		26,011		(73,073		)	324,506
Total Assets(1)	5,823,817		902,514		1,414,878		2,686,938		2,310,001		551,215			13,689,363
Expenditures for Segment Assets	56,265		5,632		30,101		31,254		153,705		15,143			292,100
Capital Expenditures (see Liquidity and Capital Resources section of Management's Discussion & Analysis of Financial Condition and Results of Operations)	28,688		5,632		2,116		15,149		121,557		11,623			184,765
Cash Paid (Received) for Acquisitions, Net of Cash Acquired	9,876		—		11,484		14,543		—		3,520			39,423
Acquisitions of Customer Relationships, Customer Inducements and Contract Fulfillment Costs and third-party commissions.	17,701		—		16,501		1,562		32,148		—			67,912
As of and for the Three Months Ended March 31, 2018
Total Revenues	$	526,843	$	99,964	$	134,075	$	210,767	$	46,603	$	24,206		$	1,042,458
Storage Rental	304,819		69,246		83,952		131,747		45,495		15,890			651,149
Service	222,024		30,718		50,123		79,020		1,108		8,316			391,309
Depreciation and Amortization	62,752		10,104		17,556		31,873		22,268		16,025			160,578
Depreciation	49,138		8,023		12,758		19,064		11,380		13,069			113,432
Amortization	13,614		2,081		4,798		12,809		10,888		2,956			47,146
Adjusted EBITDA	225,738		53,852		43,966		60,747		20,790		(62,078		)	343,015
Total Assets(1)	5,030,238		833,690		917,155		2,441,685		1,875,766		899,615			11,998,149
Expenditures for Segment Assets	43,181		6,853		7,480		32,160		1,438,012		14,939			1,542,625
Capital Expenditures (see Liquidity and Capital Resources section of Management's Discussion & Analysis of Financial Condition and Results of Operations)	29,870		6,853		6,047		25,142		13,111		14,582			95,605
Cash Paid (Received) for Acquisitions, Net of Cash Acquired	1,551		—		—		3,208		1,424,215		—			1,428,974
Acquisitions of Customer Relationships, Customer Inducements and Contract Fulfillment Costs	11,760		—		1,433		3,810		686		357			18,046

______________________________________________________________

(1) Excludes all intercompany receivables or payables and investment in subsidiary balances. Total assets as of March 31, 2019 reflects the adoption of ASU 2016-02.

Schedule of reconciliation of Adjusted EBITDA to income from continuing operations

A reconciliation of Adjusted EBITDA to income (loss) from continuing operations on a consolidated basis is as follows:

	Three Months Ended March 31,
	2019		2018
Adjusted EBITDA	$	324,506	$	343,015
(Add)/Deduct:
Provision (Benefit) for Income Taxes	10,553		1,168
Other Expense (Income), Net	15,210		20,151
Interest Expense, Net	102,436		97,626
Loss (gain) on disposal/write-down of property, plant and equipment, net	602		(1,130		)
Depreciation and Amortization	162,483		160,578
Significant Acquisition Costs(1)	2,746		19,008
Income (Loss) from Continuing Operations	$	30,476	$	45,614

_______________________________________________________________________________

(1) As defined in Note 9 to Notes to Consolidated Financial Statements included in our Annual Report.

Revenue from External Customers by Products and Services [Table Text Block]

Information as to our revenues by product and service lines by segment are as follows:

	North American Records and Information Management Business		North American Data Management Business		Western European Business		Other International Business		Global Data Center Business		Corporate and Other Business		Total Consolidated
For the Three Months Ended March 31, 2019
Records Management(1)	$	427,367	$	—	$	108,707	$	172,977	$	—	$	24,345	$	733,396
Data Management(1)	—		93,989		19,886		19,227		—		14,146		147,248
Information Destruction(1)(2)	100,013		2,758		160		8,752		—		—		111,683
Data Center	—		—		—		—		61,536		—		61,536
Total Revenues	$	527,380	$	96,747	$	128,753	$	200,956	$	61,536	$	38,491	$	1,053,863
For the Three Months Ended March 31, 2018
Records Management(1)	$	435,002	$	—	$	113,759	$	181,330	$	—	$	10,404	$	740,495
Data Management(1)	—		97,594		20,219		20,478		—		13,802		152,093
Information Destruction(1)(2)	91,841		2,370		97		8,959		—		—		103,267
Data Center	—		—		—		—		46,603		—		46,603
Total Revenues	$	526,843	$	99,964	$	134,075	$	210,767	$	46,603	$	24,206	$	1,042,458

_______________________________________________________________________________

(1) Each of the offerings within our product and service lines has a component of revenue that is storage rental related and a component that is service revenues, except for information destruction, which does not have a storage rental component.

(2) Includes secure shredding services.

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Stockholders' Equity Matters (Tables)

3 Months Ended

Mar. 31, 2019

Equity [Abstract]

Schedule of dividend declared and payments

In fiscal year 2018 and the first three months of 2019, our board of directors declared the following dividends:

Declaration Date	Dividend Per Share		Record Date	Total Amount		Payment Date
February 14, 2018	$	0.5875	March 15, 2018	$	167,969	April 2, 2018
May 24, 2018	0.5875		June 15, 2018	168,078		July 2, 2018
July 24, 2018	0.5875		September 17, 2018	168,148		October 2, 2018
October 25, 2018	0.6110		December 17, 2018	174,935		January 3, 2019
February 7, 2019	0.6110		March 15, 2019	175,242		April 2, 2019

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Significant Acquisition Costs (Tables)

3 Months Ended

Mar. 31, 2019

Business Combinations [Abstract]

Acquisition costs Included in Statement of Operations

Significant Acquisition Costs included in the accompanying Condensed Consolidated Statements of Operations by segment are as follows:

	Three Months Ended March 31,
	2019		2018
North American Records and Information Management Business	$	378	$	584
North American Data Management Business	—		—
Western European Business	—		2,152
Other International Business	502		537
Global Data Center Business	143		10,181
Corporate and Other Business	1,723		5,554
Total Significant Acquisition Costs	$	2,746	$	19,008

Significant Acquisition Costs included in the accompanying Condensed Consolidated Statements of Operations are as follows:

	Three Months Ended March 31,
	2019		2018
Cost of sales (excluding depreciation and amortization)	$	898	$	296
Selling, general and administrative expenses	1,848		18,712
Total Significant Acquisition Costs	$	2,746	$	19,008

Restructuring and Related Costs [Table Text Block]

	Three Months Ended March 31,
	2019		2018
North American Records and Information Management Business	$	378	$	584
North American Data Management Business	—		—
Western European Business	—		2,152
Other International Business	502		537
Global Data Center Business	143		10,181
Corporate and Other Business	1,723		5,554
Total Significant Acquisition Costs	$	2,746	$	19,008

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Summary of Significant Accounting Policies - Cash and Cash Equivalents and Foreign Currency (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Cash and Cash Equivalents and Restricted Cash [Abstract]
Restricted cash	$ 15,250	$ 15,141

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Summary of Significant Accounting Policies - Goodwill and Other Intangible Assets and Liabilities - Schedule of Components of Finite-Lived Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Assets:
Finite-Lived Intangible Assets, Net Carrying Amount	$ 1,495,338	$ 1,506,522
Customer relationship intangible assets
Assets:
Finite-Lived Intangible Assets, Gross	1,754,794	1,718,919
Finite-Lived Intangible Assets, Accumulated Amortization	(482,971)	(455,705)
Finite-Lived Intangible Assets, Net Carrying Amount	1,271,823	1,263,214
Customer inducements
Assets:
Finite-Lived Intangible Assets, Gross	51,405	56,478
Finite-Lived Intangible Assets, Accumulated Amortization	(28,711)	(34,181)
Finite-Lived Intangible Assets, Net Carrying Amount	22,694	22,297
Data center lease-based intangible assets
Assets:
Finite-Lived Intangible Assets, Gross	265,834	271,818
Finite-Lived Intangible Assets, Accumulated Amortization	(65,013)	(50,807)
Finite-Lived Intangible Assets, Net Carrying Amount	200,821	221,011
Liabilities:
Data center Below Market Lease, Gross Carrying Amount	12,715	12,318
Below Market Lease, Accumulated Amortization	(2,451)	(1,642)
Below Market Lease, Net Carrying Amount	10,264	10,676
Capitalized commissions asset
Assets:
Finite-Lived Intangible Assets, Gross	30,861	30,071
Finite-Lived Intangible Assets, Accumulated Amortization	(737)	(1,089)
Finite-Lived Intangible Assets, Net Carrying Amount	30,124	28,982
Customer relationships, customer inducements and data center
Assets:
Finite-Lived Intangible Assets, Gross	2,102,894	2,077,286
Finite-Lived Intangible Assets, Accumulated Amortization	(577,432)	(541,782)
Finite-Lived Intangible Assets, Net Carrying Amount	$ 1,525,462	$ 1,535,504

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Summary of Significant Accounting Policies - Goodwill and Other Intangible Assets and Liabilities - Schedule Of Other Finite-Lived Intangile Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets
Customer relationships, customer inducements and data center lease-based intangibles	$ 1,495,338	$ 1,506,522
Third-party commissions asset and other finite-lived intangible assets
Finite-Lived Intangible Assets
Finite-Lived Intangible Assets, Gross	20,290	20,310
Finite-Lived Intangible Assets, Accumulated Amortization	(15,794)	(14,798)
Customer relationships, customer inducements and data center lease-based intangibles	$ 4,496	$ 5,512

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Summary of Significant Accounting Policies - Goodwill and Other Intangible Assets - Amortization Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Finite-Lived Intangible Assets
Amortization of Intangible Assets	$ 47,872	$ 47,146
Customer relationship and customer inducement intangible assets
Finite-Lived Intangible Assets
Amortization of Intangible Assets	27,881	28,806
Leases Acquired In Place and Tenant Relationships [Member]
Finite-Lived Intangible Assets
Amortization of Intangible Assets	12,609	10,838
Third-party commissions asset and other finite-lived intangible assets
Finite-Lived Intangible Assets
Amortization of Intangible Assets	757	1,185
Customer inducements
Finite-Lived Intangible Assets
Amortization of Intangible Assets	2,740	2,585
Data Center Above and Below Market Leases [Member]
Finite-Lived Intangible Assets
Amortization of Intangible Assets	$ 905	$ 1,079

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Summary of Significant Accounting Policies - Schedule of Changes in Carrying Value of Goodwill, by Reportable Operating Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Gross amount of goodwill [Roll Forward]
Goodwill	$ 4,465,378	$ 4,441,030
Non-deductible goodwill acquired during the year	10,632
Goodwill, Deductible, Acquired During Period	5,501
Goodwill, Purchase Accounting Adjustments	2,134
Fair value and other adjustments	2,565
Currency effects	6,081
Goodwill accumulated amortization [Roll Forward]
Accumulated goodwill impairment, beginning balance	135,420
Accumulated goodwill impairment, ending balance	135,420
Goodwill, Purchase Accounting Adjustments, Offset	431
North American Records and Information Management Business
Gross amount of goodwill [Roll Forward]
Goodwill	2,261,248	2,251,795
Non-deductible goodwill acquired during the year	0
Goodwill, Deductible, Acquired During Period	5,501
Goodwill, Purchase Accounting Adjustments	31
Currency effects	3,921
Goodwill accumulated amortization [Roll Forward]
Accumulated goodwill impairment, beginning balance	85,909
Accumulated goodwill impairment, ending balance	85,909
North American Data Management Business
Gross amount of goodwill [Roll Forward]
Goodwill	494,558	493,491
Non-deductible goodwill acquired during the year	0
Goodwill, Deductible, Acquired During Period	0
Goodwill, Purchase Accounting Adjustments	0
Currency effects	1,067
Goodwill accumulated amortization [Roll Forward]
Accumulated goodwill impairment, beginning balance	0
Accumulated goodwill impairment, ending balance	0
Western European Business
Gross amount of goodwill [Roll Forward]
Goodwill	388,282	381,806
Non-deductible goodwill acquired during the year	4,991
Goodwill, Deductible, Acquired During Period	0
Goodwill, Purchase Accounting Adjustments	92
Currency effects	1,393
Goodwill accumulated amortization [Roll Forward]
Accumulated goodwill impairment, beginning balance	46,500
Accumulated goodwill impairment, ending balance	46,500
Other International Business
Gross amount of goodwill [Roll Forward]
Goodwill	826,466	818,223
Non-deductible goodwill acquired during the year	3,767
Goodwill, Deductible, Acquired During Period	0
Goodwill, Purchase Accounting Adjustments	3,350
Currency effects	1,126
Goodwill accumulated amortization [Roll Forward]
Accumulated goodwill impairment, beginning balance	0
Accumulated goodwill impairment, ending balance	0
Global Data Center Business
Gross amount of goodwill [Roll Forward]
Goodwill	423,519	425,956
Non-deductible goodwill acquired during the year	0
Goodwill, Deductible, Acquired During Period	0
Goodwill, Purchase Accounting Adjustments	(871)
Currency effects	(1,566)
Goodwill accumulated amortization [Roll Forward]
Accumulated goodwill impairment, beginning balance	0
Accumulated goodwill impairment, ending balance	0
Corporate and Other
Gross amount of goodwill [Roll Forward]
Goodwill	71,305	$ 69,759
Non-deductible goodwill acquired during the year	1,874
Goodwill, Deductible, Acquired During Period	0
Goodwill, Purchase Accounting Adjustments	(468)
Currency effects	140
Goodwill accumulated amortization [Roll Forward]
Accumulated goodwill impairment, beginning balance	3,011
Accumulated goodwill impairment, ending balance	$ 3,011

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Summary of Significant Accounting Policies Summary of Significant Accounting Policies - Revenue - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Jan. 01, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 1,053,863	$ 1,042,458
Storage rental
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	662,974	651,149
Data Center Business
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	61,536	46,603
Accounting Standards Update 2014-09
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption			$ 29,461
Global Data Center Business
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	61,536	46,603
Global Data Center Business | Storage rental
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	59,718	45,495
Global Data Center Business | Data Center Business
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	61,536	$ 46,603
Operating Segments [Member] | Global Data Center Business | Storage Rental, Power And Connectivity [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 9,100

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Summary of Significant Accounting Policies - Revenue - Contract Fulfillment Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Capitalized commissions asset
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Carrying Amount	$ 27,562	$ 23,787
Accumulated Amortization	(24,923)	(34,637)
Gross Carrying Amount	52,485	58,424
Intake Costs asset
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net Carrying Amount	15,114	15,244
Accumulated Amortization	(21,041)	(24,504)
Gross Carrying Amount	$ 36,155	$ 39,748

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Summary of Significant Accounting Policies - Revenue - Amortization Expense Associated with Commissions Asset and Intake Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Capitalized commissions asset
Capitalized Contract Cost [Line Items]
Amortization expense	$ 3,946	$ 3,587
Intake Costs asset
Capitalized Contract Cost [Line Items]
Amortization expense	$ 2,679	$ 2,730

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Summary of Significant Accounting Policies - Revenue - Summary of Deferred Revenue Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Deferred revenue	$ 266,314	$ 264,823
Other Long-term Liabilities	127,127	111,331
Difference between Revenue Guidance in Effect before and after Topic 606 | Accounting Standards Update 2014-09
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Deferred revenue	266,314	264,823
Other Long-term Liabilities	$ 25,625	$ 26,401

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Summary of Significant Accounting Policies - Revenue - Summary of Condensed Consolidated Statements of Operations (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	$ 1,053,863	$ 1,042,458
Operating Income	158,675	164,559
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	30,476	45,614
Income from Continuing Operations	$ 41,029	$ 46,782
Income (Loss) from continuing operations (in dollars per share)	$ 0.10	$ 0.16
Income (Loss) from continuing operations (in dollars per share)	$ 0.10	$ 0.16

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Summary of Significant Accounting Policies - Leases (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Jan. 01, 2019
Lessee, Lease, Description [Line Items]
Finance Lease, Right-Of-Use Asset, Real Estate Assets, Percent	66.00%
Operating Lease, Right-Of-Use Asset, Real Estate Assets, Percent	98.00%
Sublease income	$ 3,047
Finance Lease, Right-Of-Use Asset, Non-Real Estate Assets, Percent	34.00%
Minimum
Lessee, Lease, Description [Line Items]
Lessee, operating lease, term	5 years
Lessee, operating lease, renewal term	1 year
Maximum
Lessee, Lease, Description [Line Items]
Lessee, operating lease, term	10 years
Lessee, operating lease, renewal term	5 years
Vehicle And Equipment | Minimum
Lessee, Lease, Description [Line Items]
Lessee, operating lease, term	1 year
Vehicle And Equipment | Maximum
Lessee, Lease, Description [Line Items]
Lessee, operating lease, term	7 years
Accounting Standards Update 2016-02 [Member]
Lessee, Lease, Description [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption	$ 5,781	$ 5,800

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Summary of Significant Accounting Policies - Leases - Supplemental Balance Sheet (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019
Accounting Policies [Abstract]
Operating Lease, Right-Of-Use Asset, Non-Real Estate Assets, Percent	2.00%
Operating lease right-of use assets	$ 1,791,536	$ 1,825,721
Financing lease right-of-use assets, net of accumulated depreciation	351,750	361,078
Total	2,143,286	2,186,799
Operating lease liabilities	206,286	209,911
Financing lease liabilities	51,222	50,437
Total current lease liabilities	257,508	260,348
Operating lease liabilities	1,656,659	1,685,771
Financing lease liabilities	338,728	350,263
Total long-term lease liabilities	1,995,387	2,036,034
Total	$ 2,252,895	$ 2,296,382

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Summary of Significant Accounting Policies - Leases - Costs (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Lessee, Lease, Description [Line Items]
Operating lease cost	$ 111,906
Depreciation of financing lease right-of-use assets	16,329
Interest expense for financing lease liabilities	6,142
Total financing lease cost	22,471
Variable lease costs	$ 25,489
Operating leases, remaining lease term	11 years 1 month 6 days
Finance leases, remaining lease term	11 years
Operating leases, discount rate	7.10%
Financing leases, discount rate	5.70%
Cost of Sales
Lessee, Lease, Description [Line Items]
Operating lease cost	$ 108,601
Selling, General and Administrative Expenses
Lessee, Lease, Description [Line Items]
Operating lease cost	$ 3,305

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Summary of Significant Accounting Policies - Leases - Estimated Future Lease Payments (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Accounting Policies [Abstract]
2019 (excluding the three months ended March 31, 2019)	$ 251,699
2020	308,267
2021	280,931
2022	257,598
2023	234,035
Thereafter	1,409,241
Total minimum lease payments	2,741,771
Less amounts representing interest or imputed interest	(878,826)
Present value of lease obligations	1,862,945
2019 (excluding the three months ended March 31, 2019)	(6,039)
2020	(7,337)
2021	(7,228)
2022	(6,851)
2023	(6,548)
Thereafter	(6,922)
Total minimum lease payments	(40,925)
2019 (excluding the three months ended March 31, 2019)	59,411
2020	68,333
2021	59,710
2022	49,997
2023	39,643
Thereafter	287,609
Total minimum lease payments	564,703
Present value of lease obligations	(174,753)
Present value of lease obligations	$ 389,950
2019		$ 323,454
2020		293,276
2021		267,379
2022		246,128
2023		221,808
Thereafter		1,287,807
Total minimum lease payments		2,639,852
2019		(7,525)
2020		(7,200)
2021		(7,063)
2022		(6,694)
2023		(6,409)
Thereafter		(6,279)
Total minimum lease payments		(41,170)
2019		80,513
2020		71,335
2021		61,269
2022		52,832
2023		44,722
Thereafter		377,750
Total minimum lease payments		688,421
Less amounts representing interest		(241,248)
Present value of finance lease obligations		$ 447,173

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Summary of Significant Accounting Policies - Leases - Supplemental Cash Flows (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Accounting Policies [Abstract]
Operating cash flows used in operating leases	$ 83,676
Financing cash flows used in financing leases	16,675
Operating lease modifications and reassessments	1,842
New operating leases (including acquisitions)	21,535
Financing lease modifications and reassessments	0
New financing leases	$ 7,523

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Summary of Significant Accounting Policies - Stock-Based Compensation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Employee stock-based awards
Weighted Average Common Shares Outstanding-Basic (in shares)	286,528,000	285,259,000
Stock-based compensation	$ 8,519	$ 7,384
Stock-based compensation expense (income), net of tax	$ 7,935	$ 6,833
Stock-based compensation expense per basic and diluted share (in dollars per share)	$ 0.03	$ 0.02
Share-Based Compensation, aggregate disclosures
Employee stock-based awards, unrecognized compensation costs on nonvested awards	$ 72,353
Employee stock-based awards, unrecognized compensation costs on nonvested awards, weighted average period of recognition	2 years 2 months 1 day
Stock Options
Summary of option activity
Options outstanding balance, beginning of period (in shares)	4,271,834
Options granted (in shares)	920,706
Options exercised (in shares)	(99,334)
Options forfeited (in shares)	(6,007)
Options expired (in shares)	(9,629)
Options outstanding balance, end of period (in shares)	5,077,570
Options exercisable balance (in shares)	3,258,982
Options expected to vest (in shares)	1,691,146
Performance units
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options
Non-vested at the beginning of the period (in shares)	667,101
Granted (in shares)	380,856
Vested (in shares)	(169,523)
Forfeited (in shares)	(19,666)
Non-vested at the end of the period (in shares)	858,768
Total fair value of shares or units vested	$ 6,503	$ 3,033
Performance units | Two Thousand Seventeen [Member]
Performance units disclosure
Percentage of achievement of the predefined revenue and ROIC targets	100.00%
Performance units | Two Thousand Eighteen [Member]
Performance units disclosure
Percentage of achievement of the predefined revenue and ROIC targets	100.00%
Performance units | Two Thousand Nineteen [Member]
Performance units disclosure
Percentage of achievement of the predefined revenue and ROIC targets	100.00%
Original PU Awards
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options
Non-vested at the beginning of the period (in shares)	967,049
Granted (in shares)	380,856
Vested (in shares)	(169,523)
Forfeited (in shares)	(4,816)
Non-vested at the end of the period (in shares)	1,173,566
PUs Adjustment
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options
Non-vested at the beginning of the period (in shares)	(299,948)
Granted (in shares)	0
Vested (in shares)	0
Forfeited (in shares)	(14,850)
Non-vested at the end of the period (in shares)	(314,798)
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options
Non-vested at the beginning of the period (in shares)	1,196,566
Granted (in shares)	621,281
Vested (in shares)	(453,167)
Forfeited (in shares)	(18,075)
Non-vested at the end of the period (in shares)	1,346,605
Total fair value of shares or units vested	$ 15,333	$ 15,330

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Summary of Significant Accounting Policies - Income Per Share, Allowance for Doubful Accounts, Income Taxes, and Concentration of Credit Risk (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income (Loss) Per Share-Basic and Diluted
Income (loss) from continuing operations	$ 30,476	$ 45,614
Less: Net Income (Loss) Attributable to Noncontrolling Interests	891	468
Income (loss) from continuing operations (utilized in numerator of Earnings Per Share calculation)	29,585	45,146
Income (loss) from discontinued operations, net of tax	(24)	(462)
Net income (loss) attributable to Iron Mountain Incorporated	$ 29,561	$ 44,684
Weighted-average shares—basic	286,528,000	285,259,000
Effect of dilutive potential stock options (in shares)	231,402	249,564
Effect of dilutive potential restricted stock, RSUs and PUs (in shares)	732,421	484,314
Weighted-average shares—diluted	287,491,823	285,992,878
Earnings (Losses) per share-basic:
Income (Loss) from continuing operations (in dollars per share)	$ 0.10	$ 0.16
Total (loss) income discontinued operations (in dollars per share)	0.00	0.00
Net Income (Loss) Attributable to Iron Mountain Incorporated (in dollars per share)	0.10	0.16
Earnings (Losses) per share-diluted:
Income (Loss) from continuing operations (in dollars per share)	0.10	0.16
Total (loss) income from discontinued operations (in dollars per share)	0.00	0.00
Net Income (Loss) Attributable to Iron Mountain Incorporated (in dollars per share)	$ 0.10	$ 0.16
Antidilutive stock options, RSUs and PUs, excluded from the calculation (in shares)	3,985,161	3,242,141
Income Taxes:
Effective tax rates (as a percent)	25.70%	2.50%
Income (Loss) From Continuing Operations Before Income Taxes, Minority Interest, and (Gain) Loss on Disposition of Real Estate	$ 41,029	$ 46,782
Federal statutory tax rate (as a percent)	21.00%	21.00%
Concentrations of Credit Risk
Effective Income Tax Rate Reconciliation, Tax Settlement, Amount		$ 14,000

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Summary of Significant Accounting Policies - Fair Value Measurements (Details) € in Thousands, $ in Thousands	Mar. 31, 2019 USD ($)	Mar. 31, 2019 EUR (€)	Dec. 31, 2018 USD ($)	Dec. 31, 2018 EUR (€)	Mar. 31, 2018 EUR (€)
Assets and liabilities carried at fair value measured on a recurring basis
Derivative, amount of hedged item | €		€ 271,146			€ 164,244
Fair value measured on recurring basis | Quoted prices in active markets (Level 1)
Assets and liabilities carried at fair value measured on a recurring basis
Money Market Funds, at Carrying Value	$ 0
Time Deposits, at Carrying Value			$ 0
Trading securities	9,490		10,248
Foreign Currency Contract, Asset, Fair Value Disclosure	0		0
Foreign Currency Contracts, Liability, Fair Value Disclosure	0		0
Interest Rate Swap	0
Fair value measured on recurring basis | Significant other observable inputs (Level 2)
Assets and liabilities carried at fair value measured on a recurring basis
Money Market Funds, at Carrying Value	1,739
Time Deposits, at Carrying Value			956
Trading securities	670		505
Foreign Currency Contract, Asset, Fair Value Disclosure	23		93
Foreign Currency Contracts, Liability, Fair Value Disclosure	109		973
Interest Rate Swap	3,647
Fair value measured on recurring basis | Significant unobservable inputs (Level 3)
Assets and liabilities carried at fair value measured on a recurring basis
Money Market Funds, at Carrying Value	0
Time Deposits, at Carrying Value			0
Trading securities	0		0
Foreign Currency Contract, Asset, Fair Value Disclosure	0		0
Foreign Currency Contracts, Liability, Fair Value Disclosure	0		0
Interest Rate Swap	0
Estimate of Fair Value Measurement [Member] | Fair value measured on recurring basis
Assets and liabilities carried at fair value measured on a recurring basis
Money Market Funds, at Carrying Value	1,739
Time Deposits, at Carrying Value			956
Trading securities	10,160		10,753
Foreign Currency Contract, Asset, Fair Value Disclosure	23		93
Foreign Currency Contracts, Liability, Fair Value Disclosure	109		973
Interest Rate Swap	3,647
Long | Foreign exchange contracts
Assets and liabilities carried at fair value measured on a recurring basis
Notional amount of derivatives | €		4,000		€ 29,000
Long | Foreign Exchange Forward - Option Two [Member]
Assets and liabilities carried at fair value measured on a recurring basis
Notional amount of derivatives	4,515
Short | Foreign exchange contracts
Assets and liabilities carried at fair value measured on a recurring basis
Derivative, amount of hedged item	4,610		33,374
Short | Foreign Exchange Forward - Option Two [Member]
Assets and liabilities carried at fair value measured on a recurring basis
Derivative, amount of hedged item | €		€ 4,000
Designated as Hedging Instrument | Interest Rate Swap
Assets and liabilities carried at fair value measured on a recurring basis
Notional amount of derivatives	$ 350,000		$ 350,000

XML

Summary of Significant Accounting Policies - Accumulated Other Comprehensive Income and Other Expenses (Details) € in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)	Mar. 31, 2018 USD ($)	Mar. 31, 2019 EUR (€)	Mar. 31, 2018 EUR (€)
Accumulated other comprehensive items, net
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance	$ (265,664)	$ (103,989)
Other comprehensive loss:
Foreign currency translation adjustments	17,378	30,092
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax	(2,674)	(185)
Total Other comprehensive (loss) income	14,704	29,907
Derivative, amount of hedged item | €			€ 271,146	€ 164,244
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance	(250,960)	(74,082)
Total loss on foreign currency transactions	17,697	21,785
Other, net	(2,487)	(1,634)
Other (Income) Expense, Net	15,210	20,151
Derivatives used in Net Investment Hedge, Net of Tax | €			€ 20,399
Consumer Storage | Disposal Group, Not Discontinued Operations
Accumulated other comprehensive items, net
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal	4,200
Foreign currency translation adjustments
Accumulated other comprehensive items, net
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance	(264,691)	(103,989)
Other comprehensive loss:
Foreign currency translation adjustments	17,378	30,092
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax	0	0
Total Other comprehensive (loss) income	17,378	30,092
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance	(247,313)	(73,897)
Market value adjustments for securities
Accumulated other comprehensive items, net
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance	(973)	0
Other comprehensive loss:
Foreign currency translation adjustments	0	0
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax	(2,674)	(185)
Total Other comprehensive (loss) income	(2,674)	(185)
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance	(3,647)	(185)
Senior Notes [Member]
Other comprehensive loss:
Foreign currency translation adjustments	$ 6,141	$ (5,635)

XML

Acquisitions - Narrative (Details) $ in Thousands		1 Months Ended	3 Months Ended
	Jan. 10, 2018 USD ($)	Feb. 28, 2019 USD ($)	Mar. 31, 2019 USD ($) company
Storage and Data Management Company [Member]
Business Acquisition [Line Items]
Number of Businesses Acquired | company			4
Art Storage Company [Member]
Business Acquisition [Line Items]
Number of Businesses Acquired | company			1
2019 Acquisitions
Business Acquisition [Line Items]
Cash consideration			$ 31,900
Consideration transferred			35,240
IO Data Center LLC [Member]
Business Acquisition [Line Items]
Consideration transferred	$ 1,347,000	$ 31,000
Business combination separately recognized transactions expenses and losses recognized, acquisition costs incurred to date			$ 28,064

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Acquisitions - Pro Forma Financial Information (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($) $ / shares
Business Combinations [Abstract]
Total Revenues | $	$ 1,045,948
Income from Continuing Operations | $	$ 55,566
Per Share Income from Continuing Operations - Basic | $ / shares	$ 0.20
Per Share Income from Continuing Operations - Diluted | $ / shares	$ 0.19

XML

Acquisitions - Schedule of Purchase Price Allocation (Details) - USD ($) $ in Thousands		1 Months Ended	3 Months Ended
	Jan. 10, 2018	Feb. 28, 2019	Mar. 31, 2019	Mar. 31, 2018	Jan. 01, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Cash Paid for Acquisitions, Net of Cash Acquired			$ 39,423	$ 1,428,974
Accrued Purchase Price and Other Holdbacks			1,042	$ 149
Fair Value of Identifiable Assets Acquired:
Operating lease right-of-use assets (see Note 2.d.)			1,791,536		$ 1,825,721
Long-term Operating Lease Liabilities, net of current portion (see Note 2.d.)			1,656,659		$ 1,685,771
Goodwill			4,465,378			$ 4,441,030
2019 Acquisitions
Business Acquisition [Line Items]
Cash Paid (gross of cash acquired)			31,900
Cash Paid for Acquisitions, Net of Cash Acquired			34,198
Accrued Purchase Price and Other Holdbacks			1,042
Total Consideration			35,240
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents			2,273
Fair Value of Identifiable Assets Acquired:
Cash			2,273
Accounts Receivable and Prepaid Expenses			2,845
Property, Plant and Equipment			4,039
Customer Relationship Intangible Assets			13,589
Operating lease right-of-use assets (see Note 2.d.)			10,541
Accounts Payable, Accrued Expenses and Other Liabilities			(2,065)
Long-term Operating Lease Liabilities, net of current portion (see Note 2.d.)			(10,541)
Deferred Income Taxes			1,574
Total Fair Value of Identifiable Net Assets Acquired			19,107
Goodwill			16,133
Payments for (Proceeds from) Previous Acquisition			$ 7,498
IO Data Center LLC [Member]
Business Acquisition [Line Items]
Total Consideration	$ 1,347,000	$ 31,000

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Debt Schedule of Long Term Debt (Details) $ in Thousands, $ in Thousands	Mar. 31, 2019 USD ($)	Mar. 31, 2019 AUD ($)	Dec. 31, 2018 USD ($)	Mar. 22, 2018 USD ($)
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 8,574,147		$ 8,229,430
Unamortized Debt Issuance Expense	(83,268)		(86,607)
Long-term Debt	8,490,879		8,142,823
Long-term Debt, Gross, Current Maturities	(125,142)		(126,406)
Unamortized Debt Issuance Expense, Current	0		0
Long-term Debt, Current Maturities	(125,142)		(126,406)
Long Term Debt, Gross, Net of Current Portion	8,449,005		8,103,024
Unamortized Debt Issuance Expense, Net	(83,268)		(86,607)
Long-term Debt, Excluding Current Maturities	8,365,737		8,016,417
Senior Notes 4.375 Percent due 2021 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	500,000		500,000
Fair Value	$ 502,500		$ 488,750
Stated interest rate (as a percent)	4.375%	4.375%	4.375%
Unamortized Debt Issuance Expense	$ (3,725)		$ (4,155)
Long-term Debt	$ 496,275		495,845
Australian Dollar Term Loan [Member]
Debt Instrument [Line Items]
Average interest rate (as a percent)	5.70%	5.70%
Debt Instrument, Unamortized Discount	$ 1,587		1,690
Long-term Debt, Gross	234,000		233,955
Fair Value	235,587		235,645
Unamortized Debt Issuance Expense	(2,893)		(3,084)
Long-term Debt	231,107	$ 331,875	230,871
6% Notes
Debt Instrument [Line Items]
Long-term Debt, Gross	600,000		600,000
Fair Value	$ 615,000		$ 606,000
Stated interest rate (as a percent)	6.00%	6.00%	6.00%
Unamortized Debt Issuance Expense	$ (4,851)		$ (5,126)
Long-term Debt	595,149		594,874
CAD 5.375 Percent Senior Notes due 2023 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	187,262		183,403
Fair Value	$ 189,444		$ 186,154
Stated interest rate (as a percent)	5.375%	5.375%	5.375%
Unamortized Debt Issuance Expense	$ (2,424)		$ (2,506)
Long-term Debt	184,838		180,897
The 5 3/4% Notes
Debt Instrument [Line Items]
Long-term Debt, Gross	1,000,000		1,000,000
Fair Value	$ 1,010,000		$ 940,000
Stated interest rate (as a percent)	5.75%	5.75%	5.75%
Unamortized Debt Issuance Expense	$ (7,439)		$ (7,782)
Long-term Debt	992,561		992,218
Euro Notes 3 Percent due 2025 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	336,557		343,347
Fair Value	$ 337,684		$ 321,029
Stated interest rate (as a percent)	3.00%	3.00%	3.00%
Unamortized Debt Issuance Expense	$ (3,941)		$ (4,098)
Long-term Debt	332,616		339,249
GBP Notes due 2025 3.875 Percent [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	521,286		509,425
Fair Value	$ 495,852		$ 453,811
Stated interest rate (as a percent)	3.875%	3.875%	3.875%
Unamortized Debt Issuance Expense	$ (6,480)		$ (6,573)
Long-term Debt	514,806		502,852
Senior Notes 5.375 Percent due 2026
Debt Instrument [Line Items]
Long-term Debt, Gross	250,000		250,000
Fair Value	$ 246,875		$ 224,375
Stated interest rate (as a percent)	5.375%	5.375%	5.375%
Unamortized Debt Issuance Expense	$ (3,078)		$ (3,185)
Long-term Debt	246,922		246,815
Senior Notes 4.875 Percent due 2027
Debt Instrument [Line Items]
Long-term Debt, Gross	1,000,000		1,000,000
Fair Value	$ 957,500		$ 855,000
Stated interest rate (as a percent)	4.875%	4.875%	4.875%
Unamortized Debt Issuance Expense	$ (12,086)		$ (12,442)
Long-term Debt	987,914		987,558
Senior Notes due 2028 5.25 Percent [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	825,000		825,000
Fair Value	$ 798,188		$ 713,625
Stated interest rate (as a percent)	5.25%	5.25%	5.25%
Unamortized Debt Issuance Expense	$ (10,628)		$ (10,923)
Long-term Debt	$ 814,372		814,077
Accounts Receivable Securitization Program
Debt Instrument [Line Items]
Average interest rate (as a percent)	3.50%	3.50%
Long-term Debt, Gross	$ 252,373		221,673
Fair Value	252,373		221,673
Unamortized Debt Issuance Expense	(184)		(218)
Long-term Debt	252,189		221,455
Real Estate Mortgages, Capital Leases and Other
Debt Instrument [Line Items]
Long-term Debt, Gross	566,677		606,702
Fair Value	566,677		606,702
Unamortized Debt Issuance Expense	(431)		(171)
Long-term Debt	$ 566,246		606,531
Mortgage Securitization Program [Member]
Debt Instrument [Line Items]
Average interest rate (as a percent)	3.50%	3.50%
Long-term Debt, Gross	$ 50,000		50,000
Fair Value	50,000		50,000
Unamortized Debt Issuance Expense	(1,091)		(1,128)
Long-term Debt	$ 48,909		48,872
New Credit Agreement
Debt Instrument [Line Items]
Average interest rate (as a percent)	4.00%	4.00%
New Credit Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Average interest rate (as a percent)	4.00%	4.00%
Long-term Debt, Gross	$ 1,139,566		793,832
Fair Value	1,139,566		793,832
Unamortized Debt Issuance Expense	(13,332)		(14,117)
Long-term Debt	$ 1,126,234		779,715
Term Loan A [Member] | Term Loan Facility
Debt Instrument [Line Items]
Average interest rate (as a percent)	4.20%	4.20%
Long-term Debt, Gross	$ 237,500		240,625
Fair Value	237,500		240,625
Unamortized Debt Issuance Expense	0		0
Long-term Debt	$ 237,500		240,625
Term Loan B [Member] | Term Loan Facility
Debt Instrument [Line Items]
Average interest rate (as a percent)	4.30%	4.30%
Debt Instrument, Unamortized Discount	$ 1,524		1,581
Long-term Debt, Gross	691,476		693,169
Fair Value	670,478		660,013
Unamortized Debt Issuance Expense	(8,430)		(8,742)
Long-term Debt	$ 683,046		684,427
UK Bilateral Revolving Credit Facility | Revolving Credit Facility
Debt Instrument [Line Items]
Line of Credit Facility, Interest Rate at Period End	3.20%	3.20%
Long-term Debt, Gross	$ 182,450		178,299
Fair Value	182,450		178,299
Unamortized Debt Issuance Expense	(2,255)		(2,357)
Long-term Debt	$ 180,195		$ 175,942
Term Loan Facility | Term Loan B [Member] | Loans Payable [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity				$ 700,000

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Debt (Details) € in Thousands, $ in Thousands, $ in Thousands, $ in Thousands	Mar. 31, 2019 USD ($)	Mar. 31, 2019 EUR (€)	Mar. 31, 2019 AUD ($)	Mar. 31, 2019 CAD ($)	Dec. 31, 2018 USD ($)	Mar. 22, 2018 USD ($)
Debt covenants
Long-term Debt, Gross	$ 8,574,147				$ 8,229,430
Long-term Debt	$ 8,490,879				8,142,823
New Credit Agreement
Debt
Average interest rate (as a percent)	4.00%	4.00%	4.00%	4.00%
QRS Cash Pool [Member]
Debt covenants
Cash pool agreement, net cash position	$ 2,000				2,000
Cash pool agreement, gross cash position	271,400				300,800
Cash pool agreement, outstanding borrowings	(269,400)				(298,800)
TRS Cash Pool [Member]
Debt covenants
Cash pool agreement, net cash position	3,200				2,200
Cash pool agreement, gross cash position	281,100				281,500
Cash pool agreement, outstanding borrowings	$ (277,900)				$ (279,300)
Credit Agreement
Debt covenants
Net total lease adjusted leverage ratio	5.8	5.8	5.8	5.8	5.6
Net secured debt lease adjusted leverage ratio	2.8	2.8	2.8	2.8	2.6
Bond leverage ratio, per indentures	6.1	6.1	6.1	6.1	5.8
Fixed charge coverage ratio	2.2	2.2	2.2	2.2	2.2
Credit Agreement | Minimum
Debt covenants
Fixed charge coverage ratio	1.5	1.5	1.5	1.5
Credit Agreement | Maximum
Debt covenants
Net total lease adjusted leverage ratio	6.5	6.5	6.5	6.5
Net secured debt lease adjusted leverage ratio	4.0	4.0	4.0	4.0
Bond leverage ratio, per indentures	6.5	6.5	6.5	6.5
Revolving Credit Facility
Debt
Letters of credit outstanding	$ 37,271
Remaining amount available for borrowing under credit facility	$ 573,163
Revolving Credit Facility | New Credit Agreement
Debt
Average interest rate (as a percent)	4.00%	4.00%	4.00%	4.00%
Fair Value	$ 1,139,566				$ 793,832
Debt covenants
Long-term Debt, Gross	1,139,566				793,832
Long-term Debt	1,126,234				779,715
Revolving Credit Facility | UK Bilateral Revolving Credit Facility
Debt
Fair Value	182,450				178,299
Debt covenants
Long-term Debt, Gross	182,450				178,299
Long-term Debt	180,195				175,942
Term Loan Facility | New Credit Agreement | USD
Debt covenants
Long-term Debt, Gross	$ 965,800
Term Loan Facility | New Credit Agreement | Canada, Dollars
Debt covenants
Long-term Debt, Gross				$ 94,200
Term Loan Facility | New Credit Agreement | EUR
Debt covenants
Long-term Debt, Gross | €		€ 92,000
Term Loan Facility | Term Loan A [Member]
Debt
Average interest rate (as a percent)	4.20%	4.20%	4.20%	4.20%
Fair Value	$ 237,500				240,625
Debt covenants
Long-term Debt, Gross	237,500				240,625
Long-term Debt	$ 237,500				240,625
Term Loan Facility | Term Loan B [Member]
Debt
Average interest rate (as a percent)	4.30%	4.30%	4.30%	4.30%
Debt Instrument, Unamortized Discount	$ 1,524				1,581
Fair Value	670,478				660,013
Debt covenants
Long-term Debt, Gross	691,476				693,169
Long-term Debt	$ 683,046				$ 684,427
Loans Payable [Member] | Term Loan B [Member] | Term Loan Facility
Debt
Maximum borrowing capacity						$ 700,000
Euro Notes 3 Percent due 2025 [Member]
Debt
Stated interest rate (as a percent)	3.00%	3.00%	3.00%	3.00%	3.00%
Fair Value	$ 337,684				$ 321,029
Debt covenants
Long-term Debt, Gross	336,557				343,347
Long-term Debt	$ 332,616				$ 339,249
Senior Notes 4.875 Percent due 2027
Debt
Stated interest rate (as a percent)	4.875%	4.875%	4.875%	4.875%	4.875%
Fair Value	$ 957,500				$ 855,000
Debt covenants
Long-term Debt, Gross	1,000,000				1,000,000
Long-term Debt	$ 987,914				$ 987,558
Senior Notes 5.375 Percent due 2026
Debt
Stated interest rate (as a percent)	5.375%	5.375%	5.375%	5.375%	5.375%
Fair Value	$ 246,875				$ 224,375
Debt covenants
Long-term Debt, Gross	250,000				250,000
Long-term Debt	$ 246,922				$ 246,815
CAD 5.375 Percent Senior Notes due 2023 [Member]
Debt
Stated interest rate (as a percent)	5.375%	5.375%	5.375%	5.375%	5.375%
Fair Value	$ 189,444				$ 186,154
Debt covenants
Long-term Debt, Gross	187,262				183,403
Long-term Debt	$ 184,838				180,897
Australian Dollar Term Loan [Member]
Debt
Average interest rate (as a percent)	5.70%	5.70%	5.70%	5.70%
Debt Instrument, Unamortized Discount	$ 1,587				1,690
Fair Value	235,587				235,645
Debt covenants
Long-term Debt, Gross	234,000				233,955
Long-term Debt	$ 231,107		$ 331,875		$ 230,871

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Debt Covenant Ratios (Details)	Mar. 31, 2019	Dec. 31, 2018
Credit Agreement
Debt Instrument [Line Items]
Net total lease adjusted leverage ratio	5.8	5.6
Net secured debt lease adjusted leverage ratio	2.8	2.6
Bond leverage ratio, per indentures	6.1	5.8
Fixed charge coverage ratio	2.2	2.2
Credit Agreement | Maximum
Debt Instrument [Line Items]
Net total lease adjusted leverage ratio	6.5
Net secured debt lease adjusted leverage ratio	4.0
Bond leverage ratio, per indentures	6.5
Credit Agreement | Minimum
Debt Instrument [Line Items]
Fixed charge coverage ratio	1.5
Senior Notes 4.875 Percent due 2027, GBP Notes due 2025 and 5.25 Percent Notes [Member]
Debt Instrument [Line Items]
Debt Instrument Covenant, Indenture, Leverage Ratio Maximum	7.0

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Debt Cash Pool (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
QRS Cash Pool [Member]
Debt Instrument [Line Items]
Cash pool agreement, gross cash position	$ 271,400	$ 300,800
Cash pool agreement, outstanding borrowings	(269,400)	(298,800)
Cash pool agreement, net cash position	2,000	2,000
TRS Cash Pool [Member]
Debt Instrument [Line Items]
Cash pool agreement, gross cash position	281,100	281,500
Cash pool agreement, outstanding borrowings	(277,900)	(279,300)
Cash pool agreement, net cash position	$ 3,200	$ 2,200

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Selected Consolidated Financial Statements of Parent, Guarantors, Canada Company and Non-Guarantors - Balance Sheets (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Current Assets:
Cash and Cash Equivalents	$ 161,475		$ 165,485	$ 442,491	$ 925,699
Accounts Receivable	837,521		846,889
Prepaid expenses and other	210,854		195,740
Due from Related Parties, Current	0		0
Total Current Assets	1,209,850		1,208,114
Property, Plant and Equipment, Net	4,525,583		4,489,557
Other Assets, Net:
Long-term Notes Receivable from Affiliates and Intercompany Receivable	0		0
Investment in Subsidiaries	0		0
Goodwill	4,465,378		4,441,030
Operating lease right-of-use assets (see Note 2.d.)	1,791,536	$ 1,825,721
Other	1,697,016		1,713,546
Total Other Assets, Net	7,953,930		6,154,576
Total Assets	13,689,363		11,852,247	11,998,149
Liabilities and Equity
Intercompany Payable	0		0
Debit Balances Under Cash Pools	0		0
Current Portion of Long-term Debt	125,142		126,406
Total Other Current Liabilities	1,389,991		1,336,272
Long-term Debt, Net of Current Portion	8,365,737		8,016,417
Long-term Operating Lease Liabilities, net of current portion (see Note 2.d.)	1,656,659	$ 1,685,771
Long-term Notes Payable to Affiliates and Intercompany Payable	0		0
Other Long-term Liabilities	317,998		417,031
Redeemable Noncontrolling Interest	73,102		70,532
Total Iron Mountain Incorporated Stockholders' Equity	1,759,401		1,884,180
Noncontrolling Interests	1,333		1,409
Total Equity	1,760,734		1,885,589	2,261,275	2,298,842
Total Liabilities and Equity	13,689,363		11,852,247
Commitments and Contingencies (see Note 7)
Eliminations
Current Assets:
Cash and Cash Equivalents	(70,641)		(65,615)	(31,047)	(94,726)
Accounts Receivable	0		0
Prepaid expenses and other	(29)		(29)
Due from Related Parties, Current	(1,032,582)		(818,463)
Total Current Assets	(1,103,252)		(884,107)
Property, Plant and Equipment, Net	0		0
Other Assets, Net:
Long-term Notes Receivable from Affiliates and Intercompany Receivable	(5,009,984)		(4,954,686)
Investment in Subsidiaries	(2,943,682)		(2,891,318)
Goodwill	0		0
Operating lease right-of-use assets (see Note 2.d.)	0
Other	0		0
Total Other Assets, Net	(7,953,666)		(7,846,004)
Total Assets	(9,056,918)		(8,730,111)
Liabilities and Equity
Intercompany Payable	(1,032,582)		(818,463)
Debit Balances Under Cash Pools	(70,641)		(65,615)
Current Portion of Long-term Debt	(29)		(29)
Total Other Current Liabilities	0		0
Long-term Debt, Net of Current Portion	0		0
Long-term Operating Lease Liabilities, net of current portion (see Note 2.d.)	0
Long-term Notes Payable to Affiliates and Intercompany Payable	(5,009,984)		(4,954,686)
Other Long-term Liabilities	0		0
Redeemable Noncontrolling Interest	0		0
Total Iron Mountain Incorporated Stockholders' Equity	(2,943,682)		(2,891,318)
Noncontrolling Interests	0		0
Total Equity	(2,943,682)		(2,891,318)
Total Liabilities and Equity	(9,056,918)		(8,730,111)
Parent | Reportable legal entities
Current Assets:
Cash and Cash Equivalents	11		132	3,194	2,433
Accounts Receivable	0		0
Prepaid expenses and other	0		93
Due from Related Parties, Current	0		0
Total Current Assets	11		225
Property, Plant and Equipment, Net	168		190
Other Assets, Net:
Long-term Notes Receivable from Affiliates and Intercompany Receivable	5,009,984		4,954,686
Investment in Subsidiaries	1,926,435		1,885,174
Goodwill	0		0
Operating lease right-of-use assets (see Note 2.d.)	0
Other	5		0
Total Other Assets, Net	6,936,424		6,839,860
Total Assets	6,936,603		6,840,275
Liabilities and Equity
Intercompany Payable	729,843		462,927
Debit Balances Under Cash Pools	0		0
Current Portion of Long-term Debt	0		0
Total Other Current Liabilities	224,825		268,373
Long-term Debt, Net of Current Portion	4,218,887		4,223,822
Long-term Operating Lease Liabilities, net of current portion (see Note 2.d.)	0
Long-term Notes Payable to Affiliates and Intercompany Payable	0		0
Other Long-term Liabilities	3,647		973
Redeemable Noncontrolling Interest	0		0
Total Iron Mountain Incorporated Stockholders' Equity	1,759,401		1,884,180
Noncontrolling Interests	0		0
Total Equity	1,759,401		1,884,180
Total Liabilities and Equity	6,936,603		6,840,275
Guarantors
Other Assets, Net:
Deposits	76,000		57,200
Guarantors | Reportable legal entities
Current Assets:
Cash and Cash Equivalents	122,114		61,650	75,061	634,317
Accounts Receivable	37,598		47,900
Prepaid expenses and other	110,223		108,879
Due from Related Parties, Current	1,032,582		818,463
Total Current Assets	1,302,517		1,036,892
Property, Plant and Equipment, Net	2,999,744		3,002,104
Other Assets, Net:
Long-term Notes Receivable from Affiliates and Intercompany Receivable	0		0
Investment in Subsidiaries	1,017,247		1,006,144
Goodwill	2,857,855		2,858,539
Operating lease right-of-use assets (see Note 2.d.)	895,920
Other	976,403		979,483
Total Other Assets, Net	5,747,425		4,844,166
Total Assets	10,049,686		8,883,162
Liabilities and Equity
Intercompany Payable	0		0
Debit Balances Under Cash Pools	0		10,612
Current Portion of Long-term Debt	55,940		63,703
Total Other Current Liabilities	632,699		616,826
Long-term Debt, Net of Current Portion	2,212,686		1,877,649
Long-term Operating Lease Liabilities, net of current portion (see Note 2.d.)	832,007
Long-term Notes Payable to Affiliates and Intercompany Payable	5,009,984		4,954,686
Other Long-term Liabilities	51,575		115,994
Redeemable Noncontrolling Interest	0		0
Total Iron Mountain Incorporated Stockholders' Equity	1,254,795		1,243,692
Noncontrolling Interests	0		0
Total Equity	1,254,795		1,243,692
Total Liabilities and Equity	10,049,686		8,883,162
Non-Guarantors
Other Assets, Net:
Deposits	0		12,700
Non-Guarantors | Reportable legal entities
Current Assets:
Cash and Cash Equivalents	109,991		169,318	$ 395,283	$ 383,675
Accounts Receivable	799,923		798,989
Prepaid expenses and other	100,660		86,797
Due from Related Parties, Current	0		0
Total Current Assets	1,010,574		1,055,104
Property, Plant and Equipment, Net	1,525,671		1,487,263
Other Assets, Net:
Long-term Notes Receivable from Affiliates and Intercompany Receivable	0		0
Investment in Subsidiaries	0		0
Goodwill	1,607,523		1,582,491
Operating lease right-of-use assets (see Note 2.d.)	895,616
Other	720,608		734,063
Total Other Assets, Net	3,223,747		2,316,554
Total Assets	5,759,992		4,858,921
Liabilities and Equity
Intercompany Payable	302,739		355,536
Debit Balances Under Cash Pools	70,641		55,003
Current Portion of Long-term Debt	69,231		62,732
Total Other Current Liabilities	532,467		451,073
Long-term Debt, Net of Current Portion	1,934,164		1,914,946
Long-term Operating Lease Liabilities, net of current portion (see Note 2.d.)	824,652
Long-term Notes Payable to Affiliates and Intercompany Payable	0		0
Other Long-term Liabilities	262,776		300,064
Redeemable Noncontrolling Interest	73,102		70,532
Total Iron Mountain Incorporated Stockholders' Equity	1,688,887		1,647,626
Noncontrolling Interests	1,333		1,409
Total Equity	1,690,220		1,649,035
Total Liabilities and Equity	$ 5,759,992		$ 4,858,921

XML

Selected Consolidated Financial Statements of Parent, Guarantors, Canada Company and Non-Guarantors - Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Consolidating financial statements
Revenues	$ 1,053,863	$ 1,042,458
Intercompany	0	0
Cost of sales (excluding depreciation and amortization)	461,544	448,721
Intercompany	0	0
Income (loss) from discontinued operations, net of tax	(24)	(462)
Operating Expenses:
Selling, General and Administrative	270,559	269,730
Depreciation and Amortization	162,483	160,578
Gain (Loss) on Sale of Assets and Asset Impairment Charges	602	(1,130)
Total Operating Expenses	895,188	877,899
Operating Income (Loss)	158,675	164,559
Interest Expense (Income), Net	102,436	97,626
Other (Income) Expense, Net	15,210	20,151
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes	41,029	46,782
Provision (Benefit) for Income Taxes	10,553	1,168
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax	0	0
Income (Loss) from Continuing Operations	30,476	45,614
Net income (loss)	30,452	45,152
Less: Net Income (Loss) Attributable to Noncontrolling Interests	891	468
Net income (loss) attributable to Iron Mountain Incorporated	29,561	44,684
Net income (loss)	30,452	45,152
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustment	18,191	31,651
Change in Fair Value of Interest Rate Swap Agreements	(2,674)	(185)
Equity in Other Comprehensive Income (Loss) of Subsidiaries	0	0
Total Other Comprehensive Income (Loss)	15,517	31,466
Comprehensive Income (Loss)	45,969	76,618
Comprehensive Income (Loss) Attributable to Noncontrolling Interests	1,704	2,027
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	44,265	74,591
Eliminations
Consolidating financial statements
Revenues	(6,077)	(5,696)
Intercompany	(6,077)	(5,696)
Cost of sales (excluding depreciation and amortization)	0	0
Intercompany	(6,077)	(5,696)
Income (loss) from discontinued operations, net of tax	0	0
Operating Expenses:
Selling, General and Administrative	0	0
Depreciation and Amortization	0	0
Gain (Loss) on Sale of Assets and Asset Impairment Charges	0	0
Total Operating Expenses	(6,077)	(5,696)
Operating Income (Loss)	0	0
Interest Expense (Income), Net	0	0
Other (Income) Expense, Net	0	0
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes	0	0
Provision (Benefit) for Income Taxes	0	0
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax	75,320	90,679
Income (Loss) from Continuing Operations	(75,320)	(90,679)
Net income (loss)	(75,320)	(90,679)
Less: Net Income (Loss) Attributable to Noncontrolling Interests	0	0
Net income (loss) attributable to Iron Mountain Incorporated	(75,320)	(90,679)
Net income (loss)	(75,320)	(90,679)
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustment	0	0
Change in Fair Value of Interest Rate Swap Agreements	0	0
Equity in Other Comprehensive Income (Loss) of Subsidiaries	(18,393)	(74,068)
Total Other Comprehensive Income (Loss)	(18,393)	(74,068)
Comprehensive Income (Loss)	(93,713)	(164,747)
Comprehensive Income (Loss) Attributable to Noncontrolling Interests	0	0
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	(93,713)	(164,747)
Parent | Reportable legal entities
Consolidating financial statements
Revenues	0	0
Intercompany	0	0
Cost of sales (excluding depreciation and amortization)	0	0
Intercompany	0	0
Income (loss) from discontinued operations, net of tax	0	0
Operating Expenses:
Selling, General and Administrative	87	43
Depreciation and Amortization	23	33
Gain (Loss) on Sale of Assets and Asset Impairment Charges	0	0
Total Operating Expenses	110	76
Operating Income (Loss)	(110)	(76)
Interest Expense (Income), Net	49,625	49,941
Other (Income) Expense, Net	182	(1,157)
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes	(49,917)	(48,860)
Provision (Benefit) for Income Taxes	0	0
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax	(79,478)	(93,544)
Income (Loss) from Continuing Operations	29,561	44,684
Net income (loss)	29,561	44,684
Less: Net Income (Loss) Attributable to Noncontrolling Interests	0	0
Net income (loss) attributable to Iron Mountain Incorporated	29,561	44,684
Net income (loss)	29,561	44,684
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustment	6,141	(5,635)
Change in Fair Value of Interest Rate Swap Agreements	(2,674)	(185)
Equity in Other Comprehensive Income (Loss) of Subsidiaries	11,237	35,732
Total Other Comprehensive Income (Loss)	14,704	29,912
Comprehensive Income (Loss)	44,265	74,596
Comprehensive Income (Loss) Attributable to Noncontrolling Interests	0	0
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	44,265	74,596
Guarantors | Reportable legal entities
Consolidating financial statements
Revenues	644,588	627,911
Intercompany	1,154	1,205
Cost of sales (excluding depreciation and amortization)	263,137	246,163
Intercompany	4,923	4,491
Income (loss) from discontinued operations, net of tax	(24)	(422)
Operating Expenses:
Selling, General and Administrative	187,822	185,348
Depreciation and Amortization	102,954	102,446
Gain (Loss) on Sale of Assets and Asset Impairment Charges	(574)	356
Total Operating Expenses	559,410	538,092
Operating Income (Loss)	85,178	89,819
Interest Expense (Income), Net	4,057	(1,508)
Other (Income) Expense, Net	527	1,560
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes	80,594	89,767
Provision (Benefit) for Income Taxes	1,301	(6,712)
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax	4,158	2,865
Income (Loss) from Continuing Operations	75,135	93,614
Net income (loss)	75,111	93,192
Less: Net Income (Loss) Attributable to Noncontrolling Interests	0	0
Net income (loss) attributable to Iron Mountain Incorporated	75,111	93,192
Net income (loss)	75,111	93,192
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustment	0	0
Change in Fair Value of Interest Rate Swap Agreements	0	0
Equity in Other Comprehensive Income (Loss) of Subsidiaries	7,156	38,336
Total Other Comprehensive Income (Loss)	7,156	38,336
Comprehensive Income (Loss)	82,267	131,528
Comprehensive Income (Loss) Attributable to Noncontrolling Interests	0	0
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	82,267	131,528
Non-Guarantors | Reportable legal entities
Consolidating financial statements
Revenues	415,352	420,243
Intercompany	4,923	4,491
Cost of sales (excluding depreciation and amortization)	198,407	202,558
Intercompany	1,154	1,205
Income (loss) from discontinued operations, net of tax	0	(40)
Operating Expenses:
Selling, General and Administrative	82,650	84,339
Depreciation and Amortization	59,506	58,099
Gain (Loss) on Sale of Assets and Asset Impairment Charges	(28)	774
Total Operating Expenses	341,745	345,427
Operating Income (Loss)	73,607	74,816
Interest Expense (Income), Net	48,754	(49,193)
Other (Income) Expense, Net	14,501	19,748
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes	10,352	5,875
Provision (Benefit) for Income Taxes	9,252	7,880
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax	0	0
Income (Loss) from Continuing Operations	1,100	(2,005)
Net income (loss)	1,100	(2,045)
Less: Net Income (Loss) Attributable to Noncontrolling Interests	891	468
Net income (loss) attributable to Iron Mountain Incorporated	209	(2,513)
Net income (loss)	1,100	(2,045)
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustment	12,050	37,286
Change in Fair Value of Interest Rate Swap Agreements	0	0
Equity in Other Comprehensive Income (Loss) of Subsidiaries	0	0
Total Other Comprehensive Income (Loss)	12,050	37,286
Comprehensive Income (Loss)	13,150	35,241
Comprehensive Income (Loss) Attributable to Noncontrolling Interests	1,704	2,027
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	11,446	33,214
Storage Rental And Service [Member]
Consolidating financial statements
Revenues	662,974	651,149
Storage Rental And Service [Member] | Eliminations
Consolidating financial statements
Revenues		0
Storage Rental And Service [Member] | Parent | Reportable legal entities
Consolidating financial statements
Revenues		0
Storage Rental And Service [Member] | Guarantors | Reportable legal entities
Consolidating financial statements
Revenues	403,741	396,476
Storage rental
Consolidating financial statements
Revenues	662,974	651,149
Storage rental | Eliminations
Consolidating financial statements
Revenues	0
Storage rental | Non-Guarantors | Reportable legal entities
Consolidating financial statements
Revenues	259,233	254,673
Service
Consolidating financial statements
Revenues	390,889	391,309
Service | Eliminations
Consolidating financial statements
Revenues	0	0
Service | Parent | Reportable legal entities
Consolidating financial statements
Revenues	0	0
Service | Guarantors | Reportable legal entities
Consolidating financial statements
Revenues	239,693	230,230
Service | Non-Guarantors | Reportable legal entities
Consolidating financial statements
Revenues	$ 151,196	$ 161,079

XML

Selected Consolidated Financial Statements of Parent, Guarantors, Canada Company and Non-Guarantors - Statements of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Cash Flows from Operating Activities:
Cash Flows from Operating Activities—Continuing Operations	$ 117,067	$ 91,568
Cash Flows from Operating Activities—Discontinued Operations	0	0
Cash Flows from Operating Activities	117,067	91,568
Cash Flows from Investing Activities:
Capital expenditures (see Liquidity and Capital Resources section of Management's Discussion & Analysis of Financial Condition and Results of Operations)	(184,765)	(95,605)
Cash paid for acquisitions, net of cash acquired	(39,423)	(1,428,974)
Intercompany loans to subsidiaries	0	0
Payments to Acquire Customer Relationships, Customer Inducements and Contract Fulfillment Costs	(67,912)	(18,046)
Proceeds from sales of property and equipment and other, net	105	(19,387)
Payments to Acquire Interest in Joint Venture	(19,222)	0
Cash Flows from Investing Activities—Continuing Operations	(311,217)	(1,562,012)
Cash Flows from Investing Activities—Discontinued Operations	0	0
Cash Flows from Investing Activities	(311,217)	(1,562,012)
Cash Flows from Financing Activities:
Repayment of revolving credit facility, term loan facilities and other debt	(1,351,242)	(4,410,656)
Proceeds from revolving credit facility, term loan facilities and other debt	1,723,462	5,496,491
Borrowings under cash pools	0	0
Debt financing from (repayment to) and equity contribution from (distribution to) noncontrolling interests, net	(498)	(561)
Intercompany loans from parent	0	0
Parent cash dividends	(178,023)	(169,006)
Net (payments) proceeds associated with employee stock-based awards	(5,963)	(5,950)
Net proceeds associated with the Over-Allotment Option	0	76,192
Net proceeds associated with the At the Market (ATM) Program	0	8,716
Payment of debt financing and stock issuance costs	0	(9,974)
Net Cash Provided by (Used in) Financing Activities, Continuing Operations	187,736	985,252
Cash Flows from Financing Activities—Discontinued Operations	0	0
Net Cash Provided by (Used in) Financing Activities	187,736	985,252
Effect of exchange rates on cash and cash equivalents	2,404	1,984
Increase (Decrease) in cash and cash equivalents	(4,010)	(483,208)
Cash and cash equivalents, including Restricted Cash, beginning of period	165,485	925,699
Cash and cash equivalents, including Restricted Cash, end of period	161,475	442,491
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	161,475		$ 165,485
Eliminations
Cash Flows from Operating Activities:
Cash Flows from Operating Activities—Continuing Operations	0	0
Cash Flows from Operating Activities—Discontinued Operations	0	0
Cash Flows from Operating Activities	0	0
Cash Flows from Investing Activities:
Capital expenditures (see Liquidity and Capital Resources section of Management's Discussion & Analysis of Financial Condition and Results of Operations)	0	0
Cash paid for acquisitions, net of cash acquired	0	0
Intercompany loans to subsidiaries	275,034	366,180
Payments to Acquire Customer Relationships, Customer Inducements and Contract Fulfillment Costs	0	0
Proceeds from sales of property and equipment and other, net	0	0
Payments to Acquire Interest in Joint Venture	0
Cash Flows from Investing Activities—Continuing Operations	(275,034)	(366,180)
Cash Flows from Investing Activities—Discontinued Operations	0	0
Cash Flows from Investing Activities	(275,034)	(366,180)
Cash Flows from Financing Activities:
Repayment of revolving credit facility, term loan facilities and other debt	0	0
Proceeds from revolving credit facility, term loan facilities and other debt	0	0
Borrowings under cash pools	(5,026)	63,679
Debt financing from (repayment to) and equity contribution from (distribution to) noncontrolling interests, net	0	0
Intercompany loans from parent	275,034	366,180
Parent cash dividends	0	0
Net (payments) proceeds associated with employee stock-based awards	0	0
Net proceeds associated with the Over-Allotment Option		0
Net proceeds associated with the At the Market (ATM) Program		0
Payment of debt financing and stock issuance costs		0
Net Cash Provided by (Used in) Financing Activities, Continuing Operations	270,008	429,859
Cash Flows from Financing Activities—Discontinued Operations		0
Net Cash Provided by (Used in) Financing Activities	270,008	429,859
Effect of exchange rates on cash and cash equivalents	0	0
Increase (Decrease) in cash and cash equivalents	(5,026)	63,679
Cash and cash equivalents, including Restricted Cash, beginning of period	(65,615)	(94,726)
Cash and cash equivalents, including Restricted Cash, end of period	(70,641)	(31,047)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	(70,641)		(65,615)
Parent | Reportable legal entities
Cash Flows from Operating Activities:
Cash Flows from Operating Activities—Continuing Operations	(68,310)	(66,516)
Cash Flows from Operating Activities—Discontinued Operations	0	0
Cash Flows from Operating Activities	(68,310)	(66,516)
Cash Flows from Investing Activities:
Capital expenditures (see Liquidity and Capital Resources section of Management's Discussion & Analysis of Financial Condition and Results of Operations)	0	0
Cash paid for acquisitions, net of cash acquired	0	0
Intercompany loans to subsidiaries	(252,175)	(157,737)
Payments to Acquire Customer Relationships, Customer Inducements and Contract Fulfillment Costs	0	0
Proceeds from sales of property and equipment and other, net	0	0
Payments to Acquire Interest in Joint Venture	0
Cash Flows from Investing Activities—Continuing Operations	252,175	157,737
Cash Flows from Investing Activities—Discontinued Operations	0	0
Cash Flows from Investing Activities	252,175	157,737
Cash Flows from Financing Activities:
Repayment of revolving credit facility, term loan facilities and other debt	0	0
Proceeds from revolving credit facility, term loan facilities and other debt	0	0
Borrowings under cash pools	0	0
Debt financing from (repayment to) and equity contribution from (distribution to) noncontrolling interests, net	0	0
Intercompany loans from parent	0	0
Parent cash dividends	(178,023)	(169,006)
Net (payments) proceeds associated with employee stock-based awards	(5,963)	(5,950)
Net proceeds associated with the Over-Allotment Option		76,192
Net proceeds associated with the At the Market (ATM) Program		8,716
Payment of debt financing and stock issuance costs		(412)
Net Cash Provided by (Used in) Financing Activities, Continuing Operations	(183,986)	(90,460)
Cash Flows from Financing Activities—Discontinued Operations	0	0
Net Cash Provided by (Used in) Financing Activities	(183,986)	(90,460)
Effect of exchange rates on cash and cash equivalents	0	0
Increase (Decrease) in cash and cash equivalents	(121)	761
Cash and cash equivalents, including Restricted Cash, beginning of period	132	2,433
Cash and cash equivalents, including Restricted Cash, end of period	11	3,194
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	11		132
Guarantors | Reportable legal entities
Cash Flows from Operating Activities:
Cash Flows from Operating Activities—Continuing Operations	116,235	96,674
Cash Flows from Operating Activities—Discontinued Operations	0	0
Cash Flows from Operating Activities	116,235	96,674
Cash Flows from Investing Activities:
Capital expenditures (see Liquidity and Capital Resources section of Management's Discussion & Analysis of Financial Condition and Results of Operations)	(84,766)	(62,148)
Cash paid for acquisitions, net of cash acquired	(9,508)	(1,315,549)
Intercompany loans to subsidiaries	(22,859)	(208,443)
Payments to Acquire Customer Relationships, Customer Inducements and Contract Fulfillment Costs	(49,301)	(11,874)
Proceeds from sales of property and equipment and other, net	36	(19,466)
Payments to Acquire Interest in Joint Venture	(19,222)
Cash Flows from Investing Activities—Continuing Operations	(139,902)	(1,200,594)
Cash Flows from Investing Activities—Discontinued Operations	0	0
Cash Flows from Investing Activities	(139,902)	(1,200,594)
Cash Flows from Financing Activities:
Repayment of revolving credit facility, term loan facilities and other debt	(410,563)	(2,308,119)
Proceeds from revolving credit facility, term loan facilities and other debt	734,243	3,067,988
Borrowings under cash pools	(10,612)	(51,946)
Debt financing from (repayment to) and equity contribution from (distribution to) noncontrolling interests, net	0	0
Intercompany loans from parent	(228,937)	(154,184)
Parent cash dividends	0	0
Net (payments) proceeds associated with employee stock-based awards	0	0
Net proceeds associated with the Over-Allotment Option		0
Net proceeds associated with the At the Market (ATM) Program		0
Payment of debt financing and stock issuance costs		(9,075)
Net Cash Provided by (Used in) Financing Activities, Continuing Operations	84,131	544,664
Cash Flows from Financing Activities—Discontinued Operations	0	0
Net Cash Provided by (Used in) Financing Activities	84,131	544,664
Effect of exchange rates on cash and cash equivalents	0	0
Increase (Decrease) in cash and cash equivalents	60,464	(559,256)
Cash and cash equivalents, including Restricted Cash, beginning of period	61,650	634,317
Cash and cash equivalents, including Restricted Cash, end of period	122,114	75,061
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	122,114		61,650
Non-Guarantors | Reportable legal entities
Cash Flows from Operating Activities:
Cash Flows from Operating Activities—Continuing Operations	69,142	61,410
Cash Flows from Operating Activities—Discontinued Operations	0	0
Cash Flows from Operating Activities	69,142	61,410
Cash Flows from Investing Activities:
Capital expenditures (see Liquidity and Capital Resources section of Management's Discussion & Analysis of Financial Condition and Results of Operations)	(99,999)	(33,457)
Cash paid for acquisitions, net of cash acquired	(29,915)	(113,425)
Intercompany loans to subsidiaries	0	0
Payments to Acquire Customer Relationships, Customer Inducements and Contract Fulfillment Costs	(18,611)	(6,172)
Proceeds from sales of property and equipment and other, net	69	79
Payments to Acquire Interest in Joint Venture	0
Cash Flows from Investing Activities—Continuing Operations	(148,456)	(152,975)
Cash Flows from Investing Activities—Discontinued Operations	0	0
Cash Flows from Investing Activities	(148,456)	(152,975)
Cash Flows from Financing Activities:
Repayment of revolving credit facility, term loan facilities and other debt	(940,679)	(2,102,537)
Proceeds from revolving credit facility, term loan facilities and other debt	989,219	2,428,503
Borrowings under cash pools	(15,638)	11,733
Debt financing from (repayment to) and equity contribution from (distribution to) noncontrolling interests, net	(498)	(561)
Intercompany loans from parent	(46,097)	(211,996)
Parent cash dividends	0	0
Net (payments) proceeds associated with employee stock-based awards	0	0
Net proceeds associated with the Over-Allotment Option		0
Net proceeds associated with the At the Market (ATM) Program		0
Payment of debt financing and stock issuance costs		(487)
Net Cash Provided by (Used in) Financing Activities, Continuing Operations	17,583	101,189
Cash Flows from Financing Activities—Discontinued Operations		0
Net Cash Provided by (Used in) Financing Activities	17,583	101,189
Effect of exchange rates on cash and cash equivalents	2,404	1,984
Increase (Decrease) in cash and cash equivalents	(59,327)	11,608
Cash and cash equivalents, including Restricted Cash, beginning of period	169,318	383,675
Cash and cash equivalents, including Restricted Cash, end of period	109,991	$ 395,283
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 109,991		$ 169,318

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Segment Information - Additional Information (Details)	12 Months Ended
	Dec. 31, 2018 segment
Segment Reporting [Abstract]
Number of operating segments	6

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Segment Information - Segment Reporting Information by Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Segment information
Revenues	$ 1,053,863	$ 1,042,458
Depreciation and Amortization	162,483	160,578
Depreciation	114,611	113,432
Revenue reduction associated with amortization of customer inducements and above- and below-market leases	47,872	47,146
Adjusted EBITDA	324,506	343,015
Assets	13,689,363	11,998,149	$ 11,852,247
Expenditures for Segment Assets	292,100	1,542,625
Capital Expenditures	184,765	95,605
Cash Paid for Acquisitions, Net of Cash Acquired	39,423	1,428,974
Payments to Acquire Customer Relationships, Customer Inducements and Contract Fulfillment Costs	67,912	18,046
North American Records and Information Management business
Segment information
Revenues	527,380	526,843
Depreciation and Amortization	60,002	62,752
Depreciation	45,752	49,138
Revenue reduction associated with amortization of customer inducements and above- and below-market leases	14,250	13,614
Adjusted EBITDA	223,683	225,738
Assets	5,823,817	5,030,238
Expenditures for Segment Assets	56,265	43,181
Capital Expenditures	28,688	29,870
Cash Paid for Acquisitions, Net of Cash Acquired	9,876	1,551
Payments to Acquire Customer Relationships, Customer Inducements and Contract Fulfillment Costs	17,701	11,760
North American Data Management Business
Segment information
Revenues	96,747	99,964
Depreciation and Amortization	10,202	10,104
Depreciation	8,013	8,023
Revenue reduction associated with amortization of customer inducements and above- and below-market leases	2,189	2,081
Adjusted EBITDA	50,552	53,852
Assets	902,514	833,690
Expenditures for Segment Assets	5,632	6,853
Capital Expenditures	5,632	6,853
Cash Paid for Acquisitions, Net of Cash Acquired	0	0
Payments to Acquire Customer Relationships, Customer Inducements and Contract Fulfillment Costs	0	0
Western European Business
Segment information
Revenues	128,753	134,075
Depreciation and Amortization	15,257	17,556
Depreciation	10,947	12,758
Revenue reduction associated with amortization of customer inducements and above- and below-market leases	4,310	4,798
Adjusted EBITDA	39,209	43,966
Assets	1,414,878	917,155
Expenditures for Segment Assets	30,101	7,480
Capital Expenditures	2,116	6,047
Cash Paid for Acquisitions, Net of Cash Acquired	11,484	0
Payments to Acquire Customer Relationships, Customer Inducements and Contract Fulfillment Costs	16,501	1,433
Other International Business
Segment information
Revenues	200,956	210,767
Depreciation and Amortization	30,599	31,873
Depreciation	18,218	19,064
Revenue reduction associated with amortization of customer inducements and above- and below-market leases	12,381	12,809
Adjusted EBITDA	58,124	60,747
Assets	2,686,938	2,441,685
Expenditures for Segment Assets	31,254	32,160
Capital Expenditures	15,149	25,142
Cash Paid for Acquisitions, Net of Cash Acquired	14,543	3,208
Payments to Acquire Customer Relationships, Customer Inducements and Contract Fulfillment Costs	1,562	3,810
Global Data Center Business
Segment information
Revenues	61,536	46,603
Depreciation and Amortization	31,632	22,268
Depreciation	19,013	11,380
Revenue reduction associated with amortization of customer inducements and above- and below-market leases	12,619	10,888
Adjusted EBITDA	26,011	20,790
Assets	2,310,001	1,875,766
Expenditures for Segment Assets	153,705	1,438,012
Capital Expenditures	121,557	13,111
Cash Paid for Acquisitions, Net of Cash Acquired	0	1,424,215
Payments to Acquire Customer Relationships, Customer Inducements and Contract Fulfillment Costs	32,148	686
Corporate and Other
Segment information
Revenues	38,491	24,206
Depreciation and Amortization	14,791	16,025
Depreciation	12,668	13,069
Revenue reduction associated with amortization of customer inducements and above- and below-market leases	2,123	2,956
Adjusted EBITDA	(73,073)	(62,078)
Assets	551,215	899,615
Expenditures for Segment Assets	15,143	14,939
Capital Expenditures	11,623	14,582
Cash Paid for Acquisitions, Net of Cash Acquired	3,520	0
Payments to Acquire Customer Relationships, Customer Inducements and Contract Fulfillment Costs	0	357
Records Management [Member]
Segment information
Revenues	733,396	740,495
Records Management [Member] | North American Records and Information Management business
Segment information
Revenues	427,367	435,002
Records Management [Member] | North American Data Management Business
Segment information
Revenues	0	0
Records Management [Member] | Western European Business
Segment information
Revenues	108,707	113,759
Records Management [Member] | Other International Business
Segment information
Revenues	172,977	181,330
Records Management [Member] | Global Data Center Business
Segment information
Revenues	0	0
Records Management [Member] | Corporate and Other
Segment information
Revenues	24,345	10,404
Storage rental
Segment information
Revenues	662,974	651,149
Storage rental | North American Records and Information Management business
Segment information
Revenues	306,986	304,819
Storage rental | North American Data Management Business
Segment information
Revenues	66,572	69,246
Storage rental | Western European Business
Segment information
Revenues	80,695	83,952
Storage rental | Other International Business
Segment information
Revenues	129,473	131,747
Storage rental | Global Data Center Business
Segment information
Revenues	59,718	45,495
Storage rental | Corporate and Other
Segment information
Revenues	19,530	15,890
Service
Segment information
Revenues	390,889	391,309
Service | North American Records and Information Management business
Segment information
Revenues	220,394	222,024
Service | North American Data Management Business
Segment information
Revenues	30,175	30,718
Service | Western European Business
Segment information
Revenues	48,058	50,123
Service | Other International Business
Segment information
Revenues	71,483	79,020
Service | Global Data Center Business
Segment information
Revenues	1,818	1,108
Service | Corporate and Other
Segment information
Revenues	18,961	8,316
Data Management [Member]
Segment information
Revenues	147,248	152,093
Data Management [Member] | North American Records and Information Management business
Segment information
Revenues	0	0
Data Management [Member] | North American Data Management Business
Segment information
Revenues	93,989	97,594
Data Management [Member] | Western European Business
Segment information
Revenues	19,886	20,219
Data Management [Member] | Other International Business
Segment information
Revenues	19,227	20,478
Data Management [Member] | Global Data Center Business
Segment information
Revenues	0	0
Data Management [Member] | Corporate and Other
Segment information
Revenues	14,146	13,802
Information Destruction [Member]
Segment information
Revenues	111,683	103,267
Information Destruction [Member] | North American Records and Information Management business
Segment information
Revenues	100,013	91,841
Information Destruction [Member] | North American Data Management Business
Segment information
Revenues	2,758	2,370
Information Destruction [Member] | Western European Business
Segment information
Revenues	160	97
Information Destruction [Member] | Other International Business
Segment information
Revenues	8,752	8,959
Information Destruction [Member] | Global Data Center Business
Segment information
Revenues	0	0
Information Destruction [Member] | Corporate and Other
Segment information
Revenues	0	0
Data Center Business
Segment information
Revenues	61,536	46,603
Data Center Business | North American Records and Information Management business
Segment information
Revenues	0	0
Data Center Business | North American Data Management Business
Segment information
Revenues	0	0
Data Center Business | Western European Business
Segment information
Revenues	0	0
Data Center Business | Other International Business
Segment information
Revenues	0	0
Data Center Business | Global Data Center Business
Segment information
Revenues	61,536	46,603
Data Center Business | Corporate and Other
Segment information
Revenues	$ 0	$ 0

XML

Segment Information - Reconciliation to Income from Continuing Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Reconciliation of Adjusted EBITDA to income from continuing operations
Adjusted EBITDA	$ 324,506	$ 343,015
Provision (Benefit) for Income Taxes	10,553	1,168
Less: Depreciation and Amortization	162,483	160,578
Gain (Loss) on Sale of Assets and Asset Impairment Charges	602	(1,130)
Income (Loss) from Continuing Operations	30,476	45,614
Interest Expense (Income), Net	102,436	97,626
Other Expense (Income), Net	15,210	20,151
Recall Transaction and IODC Transaction [Member]
Reconciliation of Adjusted EBITDA to income from continuing operations
Total Significant Acquisition Costs	$ 2,746	$ 19,008

XML

Commitments and Contingencies (Details) $ in Thousands	Mar. 31, 2019 USD ($)
Insurance Settlement
Commitments and Contingencies
Reasonably possible additional losses	$ 17,500

XML

Stockholders' Equity Matters - Dividends Declared (Details)											1 Months Ended	3 Months Ended
	Apr. 02, 2019 USD ($)	Feb. 07, 2019 $ / shares	Oct. 02, 2018 USD ($)	Jul. 24, 2018 $ / shares	Jul. 02, 2018 USD ($)	May 24, 2018 $ / shares	Apr. 02, 2018 USD ($)	Feb. 14, 2018 $ / shares	Dec. 15, 2015 USD ($)	Oct. 29, 2015 $ / shares	Oct. 31, 2017 USD ($)	Mar. 31, 2019 USD ($) $ / shares shares	Mar. 31, 2018 USD ($)	Dec. 31, 2018 $ / shares shares
Subsidiary or Equity Method Investee [Line Items]
Dividends Declared per Common Share (in dollars per share) | $ / shares		$ 0.6110		$ 0.5875		$ 0.5875		$ 0.5875		$ 0.6110
Dividends, Common Stock			$ 168,148,000		$ 168,078,000		$ 167,969,000		$ 174,935,000			$ 176,460,000	$ 169,044,000
Common stock, issued shares | shares												286,829,854		286,321,009
Common Stock, Par or Stated Value Per Share | $ / shares												$ 0.01		$ 0.01
Subsequent Event
Subsidiary or Equity Method Investee [Line Items]
Dividends, Common Stock	$ 175,242,000
At The Market (ATM) Equity Program [Member]
Subsidiary or Equity Method Investee [Line Items]
Sale of Stock, Authorized Amount											$ 500,000,000
Sale of Stock, Remaining Aggregate Sale Price Of Stock Available For Distribution												$ 431,200,000
Number Of Banks											10
Sale of Stock, Number of Shares Issued in Transaction | shares												0

XML

Divestments - (Details) - USD ($) $ in Thousands		3 Months Ended
	Mar. 19, 2019	Mar. 31, 2019	Mar. 31, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Payments to Acquire Interest in Joint Venture		$ 19,222	$ 0
Consumer Storage | Disposal Group, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on disposal		4,200
Corporate Joint Venture | Makespace
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Payments to Acquire Interest in Joint Venture	$ 20,000
Equity method investment, ownership percentage	34.00%
Equity method investment, fair value		$ 27,500

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Significant Acquisition Costs Significant Acquisition Costs Included in Statements of Operations (Details) - Recall Transaction and IODC Transaction [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Business Combination, Separately Recognized Transactions [Line Items]
Total Significant Acquisition Costs	$ 2,746	$ 19,008
Cost of sales (excluding depreciation and amortization)
Business Combination, Separately Recognized Transactions [Line Items]
Total Significant Acquisition Costs	898	296
Selling, general and administrative expenses
Business Combination, Separately Recognized Transactions [Line Items]
Total Significant Acquisition Costs	$ 1,848	$ 18,712

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Significant Acquisition Costs Significant Acquisition Costs by Segment (Details) - Recall Transaction and IODC Transaction [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Business Combination, Separately Recognized Transactions [Line Items]
Total Significant Acquisition Costs	$ 2,746	$ 19,008
North American Records and Information Management business
Business Combination, Separately Recognized Transactions [Line Items]
Total Significant Acquisition Costs	378	584
North American Data Management Business
Business Combination, Separately Recognized Transactions [Line Items]
Total Significant Acquisition Costs	0	0
Western European Business
Business Combination, Separately Recognized Transactions [Line Items]
Total Significant Acquisition Costs	0	2,152
Other International Business
Business Combination, Separately Recognized Transactions [Line Items]
Total Significant Acquisition Costs	502	537
Global Data Center Business
Business Combination, Separately Recognized Transactions [Line Items]
Total Significant Acquisition Costs	143	10,181
Corporate and Other
Business Combination, Separately Recognized Transactions [Line Items]
Total Significant Acquisition Costs	$ 1,723	$ 5,554

XML

Label	Element	Value
Accounting Standards Update 2014-09 [Member] | Accumulated Distributions in Excess of Net Income [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ (29,461,000)