6-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Report on Form 6-K dated 4 May 2016

(Commission File No. 001-35053)

INTERXION HOLDING N.V.

(Translation of Registrant’s Name into English)

Tupolevlaan 24, 1119 NX Schiphol-Rijk, The Netherlands, +31 20 880 7600

(Address of Principal Executive Office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F. Form 20-F  x    Form 40-F  ¨

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):  ¨

Note: Regulation S-T Rule 101(b)(1) only permits the submission in paper of a Form 6-K if submitted solely to provide an attached annual report to security holders.

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7) ):  ¨

Note: Regulation S-T Rule 101(b)(7) only permits the submission in paper of a Form 6-K if submitted to furnish a report or other document that the registrant foreign private issuer must furnish and make public under the laws of the jurisdiction in which the registrant is incorporated, domiciled or legally organized (the registrant’s “home country”), or under the rules of the home country exchange on which the registrant’s securities are traded, as long as the report or other document is not a press release, is not required to be and has not been distributed to the registrant’s security holders, and, if discussing a material event, has already been the subject of a Form 6-K submission or other Commission filing on EDGAR.

This report contains Interxion Holding N.V.’s Condensed Consolidated Interim Financial Statements as at and for the three-month period ended 31 March 2016.

The interim report was prepared in accordance with the indenture (the “Indenture”) dated as of 3 July 2013 among Interxion Holding N.V., as Issuer, the guarantors named therein, The Bank of New York Mellon, London Branch, as Trustee, principal paying agent and transfer agent, The Bank of New York Mellon (Luxembourg) S.A., as Luxembourg paying agent and registrar, and Barclays Bank PLC, as Security Trustee.

This Report on Form 6-K is incorporated by reference into the Registration Statement on Form S-8 of the Registrant originally filed with the Securities and Exchange Commission on 23 June 2011 (File No. 333-175099) and into the Registration Statement on Form S-8 of the Registrant originally filed with the Securities and Exchange Commission on 2 June 2014 (File No. 333-196447).

Exhibit
99.1	The Interxion Holding N.V. Condensed Consolidated Interim Financial Statements as at and for the three-month period ended 31 March 2016.

SIGNATURE

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.

	INTERXION HOLDING N.V.
By:	/s/ David C. Ruberg
Name:	David C. Ruberg
Title:	Chief Executive Officer

Date: 4 May 2016

EX-99.1

Exhibit 99.1

Interxion Holding NV

Condensed Consolidated Interim Financial Statements

as at and for the three-month period ended

31 March 2016

Schiphol-Rijk, 4 May 2016

Financial Highlights

• Revenue increased by 10% to €102.0 million (1Q 2015: €92.5 million).

• Recurring Revenue increased by 12% to €97.2 million (1Q 2015: €87.1 million).

• Adjusted EBITDA¹ increased by 13% to €45.9 million (1Q 2015: €40.6 million).

• Adjusted EBITDA margin increased to 45.0% (1Q 2015: 43.9%).

• Net profit increased to €10.2 million (1Q 2015: €4.4 million).

• Adjusted net profit¹ increased by 13% to €10.0 million (1Q 2015: €8.9 million).

• Earnings per diluted share were €0.14 (1Q 2015: €0.06).

• Adjusted earnings per diluted share¹ were €0.14 (1Q 2015: €0.13).

• Capital Expenditures, including intangible assets², were €50.0 million (1Q 2015: €67.6 million).

• Subsequent to the quarter end, Interxion issued €150 million of 6.00% Senior Secured Notes due 2020 at 104.50%.

Operating Highlights

• Equipped Space increased by 400 square metres to 101,600 square metres.

• Revenue Generating Space increased by 1,300 square metres to 80,400 square metres.

• Utilisation Rate at the end of the quarter was 79%.

• Interxion’s tenth data centre in Frankfurt (FRA10) opened in the first quarter, with 1,200 square metres becoming available. Interxion’s second data centre in Copenhagen (CPH2) opened subsequent to the end of the first quarter, with 500 square metres becoming available.

Quarterly Review

Revenue in the first quarter of 2016 was €102.0 million, a 10% increase over the first quarter of 2015 and a 1% increase over the fourth quarter of 2015. Recurring revenue was €97.2 million, a 12% increase over the first quarter of 2015 and a 2% increase over the fourth quarter of 2015. Recurring revenue in the quarter was 95% of total revenue.

¹  Adjusted EBITDA, Adjusted net profit, and Adjusted earnings per diluted share are non-IFRS figures intended to adjust for unusual items and are not measures of financial performance under IFRS. Full definitions can be found in the “Use of non-IFRS information” section later in this interim report. Reconciliations of Adjusted EBITDA and Adjusted net profit to Net profit can be found in the tables later in this interim report.

²  Capital expenditures, including intangible assets, represent payments to acquire property, plant, and equipment and intangible assets, as recorded in the consolidated statement of cash flows as “Purchase of property, plant and equipment” and “Purchase of intangible assets”, respectively.

2 Interim Report: Three-month period ended 31 March 2016 These Condensed Consolidated Interim Financial Statements are unaudited

Cost of sales in the first quarter of 2016 was €39.1 million, an 8% increase over the first quarter of 2015 and a slight decrease over the fourth quarter of 2015.

Gross profit was €62.9 million in the first quarter of 2016, a 12% increase over the first quarter of 2015 and a 2% increase over the fourth quarter of 2015. Gross profit margin was 61.6% in the first quarter of 2016 compared to 60.8% in the first quarter of 2015 and 61.1% in the fourth quarter of 2015.

Sales and marketing costs in the first quarter of 2016 were €7.7 million, a 16% increase over the first quarter of 2015 and a 5% increase from the fourth quarter of 2015.

Other general and administrative costs were €9.2 million in the first quarter of 2016, a 4% increase over the first quarter of 2015 and a 1% increase from the fourth quarter of 2015. Other general and administrative costs exclude depreciation, amortisation, impairments, share-based payments, M&A transaction costs and provision for onerous lease contracts.

Adjusted EBITDA for the first quarter of 2016 was €45.9 million, a 13% increase over the first quarter of 2015 and a 2% increase over the fourth quarter of 2015. Adjusted EBITDA margin was 45.0% in the first quarter of 2016 compared to 43.9% in the first quarter of 2015 and 44.6% in the fourth quarter of 2015.

Depreciation, amortisation, and impairments in the first quarter of 2016 was €21.5 million, an increase of 18% from the first quarter of 2015 and a 6% increase from the fourth quarter of 2015.

Operating profit in the first quarter of 2016 was €22.9 million, an increase of 70% from the first quarter of 2015, and slight increase from the fourth quarter of 2015. Each of the first quarter 2015, fourth quarter 2015, and first quarter 2016 were impacted by M&A transaction related items. Excluding these items, operating profit was €23.1 million in the first quarter of 2016, an increase of 14% over the first quarter of 2015 and a 1% decrease over the fourth quarter of 2015.

Net finance costs for the first quarter of 2016 were €8.0 million, a 21% increase over the first quarter of 2015, and a 2% decrease from the fourth quarter of 2015.

Income tax expense for the first quarter of 2016 was €4.7 million, a 94% increase over the first quarter of 2015, and an 83% increase from the fourth quarter of 2015.

Net profit was €10.2 million in the first quarter of 2016, a 131% increase over the first quarter of 2015, and a 16% decrease from the fourth quarter of 2015.

Adjusted net profit was €10.0 million in the first quarter of 2016, a 13% increase over the first quarter of 2015, and a 17% decrease from the fourth quarter of 2015.

Cash generated from operations, defined as cash generated from operating activities before interest and corporate income tax payments and receipts, was €50.4 million in the first quarter of 2016, compared to €34.2 million in the first quarter of 2015, and €38.1 million in the fourth quarter of 2015.

Capital expenditures, including intangible assets, were €50.0 million in the first quarter of 2016 compared to €67.6 million in the first quarter of 2015 and €42.0 million in the fourth quarter of 2015.

Cash and cash equivalents were €44.6 million at 31 March 2016, compared to €58.6 million at year end 2015.

Interim Report: Three-month period ended 31 March 2016	3
These Condensed Consolidated Interim Financial Statements are unaudited

Total borrowings, net of deferred revolving facility financing fees, were €554.9 million at 31 March 2016 compared to €555.1 million at year end 2015. As of 31 March 2016, the company’s revolving credit facility was undrawn. On 11 April 2016, the Company issued €150 million of 6.00% Senior Secured Notes due 2020, raising net proceeds of approximately €155 million.

Equipped space at the end of the first quarter of 2016 was 101,600 square metres compared to 94,800 square metres at the end of the first quarter of 2015 and 101,200 square metres at the end of the fourth quarter of 2015. Utilisation rate, the ratio of revenue-generating space to equipped space, was 79% at the end of the first quarter of 2016, compared with 78% at the end of the first quarter of 2015 and 78% at the end of the fourth quarter of 2015.

4 Interim Report: Three-month period ended 31 March 2016 These Condensed Consolidated Interim Financial Statements are unaudited

Further Information for Noteholders

This Interim Report was prepared in accordance with IAS 34 and intended to comply with the requirements in the indenture (the “Indenture”) dated as of 3 July 2013 among Interxion Holding NV, as Issuer, the guarantors named therein, The Bank of New York Mellon, London Branch, as Trustee, principal paying agent and transfer agent; The Bank of New York Mellon (Luxembourg) S.A., as Luxembourg paying agent and registrar, and Barclays Bank PLC, as Security Trustee.

The information in this Interim Report may contain forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Such statements are based on current expectations that involve risks and uncertainties. Any statements contained herein that are not statements of historical fact may be deemed to be forward-looking statements. For example, the words “believes”, “anticipates”, “plans”, “expects”, “intends”, and similar expressions are intended to identify forward-looking statements. Our actual results and the timing of certain events may differ significantly from the results discussed in the forward-looking statements. Factors that might cause such differences include, but are not limited to, the difficulty of reducing operating expenses in the short term, inability to utilise the capacity of newly planned data centres and data centre expansions, significant competition, the cost and supply of electrical power, data centre industry over-capacity, performance under service-level agreements, and other risks described from time to time in Interxion’s filings with the Securities and Exchange Commission. All forward-looking statements in this document are based on information available to us as of the date of this Interim Report and we assume no obligation to update any such forward-looking statements.

Use of Non-IFRS Information

EBITDA is defined as operating profit plus depreciation, amortisation and impairment of assets. We define Adjusted EBITDA as EBITDA adjusted to exclude share-based payments, M&A transaction costs, increase/(decrease) in provision for onerous lease contracts and income from sub-leases of unused data centre sites. Adjusted EBITDA margin is defined as Adjusted EBITDA as a percentage of revenue. We present EBITDA, Adjusted EBITDA and Adjusted EBITDA margin as additional information because we understand that they are measures used by certain investors and because they are used in our financial covenants in our €100 million revolving facility and our 6.00% Senior Secured Notes due 2020. A reconciliation from Profit for the period attributable to shareholders (“Net profit”) to EBITDA and EBITDA to Adjusted EBITDA is provided in the notes to our consolidated interim financial statements (Note 5).

Adjusted net profit is defined as Net profit excluding the impact of M&A transaction costs, adjustments for onerous lease contracts, interest capitalised, and the related corporate income tax effect with respect to the foregoing items.

Adjusted diluted earnings per share amounts are determined on Adjusted net profit. A reconciliation from reported Net profit to Adjusted net profit is provided on the next page.

Other companies may, however, present EBITDA, Adjusted EBITDA, Adjusted EBITDA margin and Adjusted net profit differently than we do. EBITDA, Adjusted EBITDA, Adjusted EBITDA margin and Adjusted net profit are not measures of financial performance under IFRS and should not be considered as an alternative to operating profit or as a measure of liquidity or an alternative to Net profit as indicators of our operating performance or any other measure of performance implemented in accordance with IFRS.

Interim Report: Three-month period ended 31 March 2016	5
These Condensed Consolidated Interim Financial Statements are unaudited

	For the three months ended
	31 Mar 2016			31 Mar 2015
	(€ in thousands - except per share data)
Net Profit - as reported		10,219			4,425
Add back
+ M&A transaction costs		229			6,887
		229			6,887
Reverse
- Adjustments to onerous lease contracts		—			(100	)
- Interest Capitalised		(465	)		(923	)
		(465	)		(1,023	)
Tax effect of above add backs & reversals		59			(1,400	)
Adjusted Net Profit		10,042			8,889
Reported basic earnings per share: (€)		0.15			0.06
Reported diluted earnings per share: (€)		0.14			0.06
Adjusted basic earnings per share: (€)		0.14			0.13
Adjusted diluted earnings per share: (€)		0.14			0.13

About Interxion

Interxion (NYSE: INXN) is a leading provider of carrier and cloud-neutral colocation data centre services in Europe, serving a wide range of customers through 42 data centres in 11 European countries. Interxion’s uniformly designed, energy efficient data centres offer customers extensive security and uptime for their mission-critical applications.

With over 600 connectivity providers, 21 European Internet exchanges, and most leading cloud and digital media platforms across its footprint, Interxion has created connectivity, cloud, content and finance hubs that foster growing customer communities of interest. For more information, please visit www.interxion.com.

6 Interim Report: Three-month period ended 31 March 2016 These Condensed Consolidated Interim Financial Statements are unaudited

Condensed Consolidated Interim Income Statements

			For the three months ended
			31 Mar 2016			31 Mar 2015
	Note		€’000			€’000
Revenue		5		102,000			92,482
Cost of sales		5		(39,119	)		(36,282	)
Gross profit				62,881			56,200
Other income		5		98			63
Sales and marketing costs		5		(7,724	)		(6,679	)
General and administrative costs		5		(32,386	)		(36,159	)
Operating profit				22,869			13,425
Finance income		6		145			1,208
Finance expense		6		(8,103	)		(7,793	)
Profit before taxation				14,911			6,840
Income tax expense		7		(4,692	)		(2,415	)
Profit for the period attributable to shareholders				10,219			4,425
Earnings per share
Basic earnings per share: (€)				0.15			0.06
Diluted earnings per share: (€)				0.14			0.06

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

Interim Report: Three-month period ended 31 March 2016	7
These Condensed Consolidated Interim Financial Statements are unaudited

Condensed Consolidated Interim Statements of Comprehensive Income

	For the three months ended
	31 Mar 2016			31 Mar 2015
	€’000			€’000
Profit for the period attributable to shareholders		10,219			4,425
Other comprehensive income
Items that are, or may be, reclassified subsequently to profit or loss:
Foreign currency translation differences		(6,706	)		13,943
Effective portion of changes in fair value of cash flow hedge		(97	)		(36	)
Tax on items that are, or may be, reclassified subsequently to profit or loss		845			(1,178	)
Other comprehensive income/(loss) for the period, net of tax		(5,958	)		12,729
Total comprehensive income attributable to shareholders		4,261			17,154

The foreign currency translation differences are primarily related to exchange rate differences on equities and permanent loans in GBP.

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

8 Interim Report: Three-month period ended 31 March 2016 These Condensed Consolidated Interim Financial Statements are unaudited

Condensed Consolidated Interim Statements of Financial Position

As at			31 Mar 2016			31 Dec 2015
	Note		€’000			€’000
Non-current assets
Property, plant and equipment		8		1,020,125			999,072
Intangible assets				24,600			23,194
Deferred tax assets				21,705			23,024
Financial assets				924			—
Other non-current assets				7,501			6,686
				1,074,855			1,051,976
Current assets
Trade receivables and other current assets				134,419			141,534
Cash and cash equivalents				44,612			58,554
				179,031			200,088
Total assets				1,253,886			1,252,064
Shareholders’ equity
Share capital				7,017			6,992
Share premium				510,598			507,296
Foreign currency translation reserve				14,972			20,865
Hedging reserve, net of tax				(278	)		(213	)
Accumulated deficit				(17,304)			(27,523)
				515,005			507,417
Non-current liabilities
Trade payables and other liabilities				12,387			12,049
Deferred tax liabilities				9,251			9,951
Borrowings		10		550,614			550,812
				572,252			572,812
Current liabilites
Trade payables and other liabilities				156,301			162,629
Income tax liabilities				4,730			2,738
Provision for onerous lease contracts				647			1,517
Borrowings		10		4,951			4,951
				166,629			171,835
Total liabilities				738,881			744,647
Total liabilities and shareholders’ equity				1,253,886			1,252,064

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

Interim Report: Three-month period ended 31 March 2016	9
These Condensed Consolidated Interim Financial Statements are unaudited

Condensed Consolidated Interim Statements of Changes in Shareholders’ Equity

	Share capital		Share premium		Foreign currency translation reserve			Hedging reserve			Accumu- lated deficit			Total equity
	€’000		€’000		€’000			€’000			€’000			€’000
Balance at 1 January 2016		6,992		507,296		20,865			(213	)		(27,523	)		507,417
Profit for the period		—		—		—			—			10,219			10,219
Other comprehensive income/(loss), net of tax		—		—		(5,893	)		(65	)		—			(5,958	)
Total comprehensive income		—		—		(5,893	)		(65	)		10,219			4,261
Exercise of options		25		1,901		—			—			—			1,926
Share-based payments		—		1,401		—			—			—			1,401
Total contribution by, and distributions to, owners of the Company		25		3,302		—			—			—			3,327
Balance at 31 March 2016		7,017		510,598		14,972			(278	)		(17,304	)		515,005
Balance at 1 January 2015		6,932		495,109		10,440			(247	)		(76,089	)		436,145
Profit for the period		—		—		—			—			4,425			4,425
Other comprehensive income, net of tax		—		—		12,753			(24	)		—			12,729
Total comprehensive income		—		—		12,753			(24	)		4,425			17,154
Exercise of options		24		2,122		—			—			—			2,146
Share-based payments		—		1,950		—			—			—			1,950
Total contribution by, and distributions to, owners of the Company		24		4,072		—			—			—			4,096
Balance at 31 March 2015		6,956		499,181		23,193			(271	)		(71,664	)		457,395

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

10 Interim Report: Three-month period ended 31 March 2016 These Condensed Consolidated Interim Financial Statements are unaudited

Condensed Consolidated Interim Statements of Cash Flows

	For the three months ended
	31 Mar 2016			31 Mar 2015
	€’000			€’000
Net profit		10,219			4,425
Depreciation, amortisation and impairments		21,478			18,215
Provision for onerous lease contracts		(880	)		(925	)
Share-based payments		1,401			2,241
Net finance expense		7,958			6,585
Income tax expense		4,692			2,415
		44,868			32,956
Movements in trade receivables and other current assets		5,041			(1,631	)
Movements in trade payables and other liabilities		506			2,874
Cash generated from operations		50,415			34,199
Interest and fees paid (a)		(14,362	)		(13,574	)
Interest received		7			49
Income tax paid		(1,054	)		(2,320	)
Net cash flows from / (used in) operating activities		35,006			18,354
Cash flows from investing activities
Purchase of property, plant and equipment		(47,446	)		(65,318	)
Purchase of intangible assets		(2,556	)		(2,252	)
Net cash flows from / (used in) investing activities		(50,002	)		(67,570	)
Cash flows from financing activities
Proceeds from exercised options		1,926			2,178
Repayment of mortgages		(320	)		(320	)
Net cash flows from / (used in) financing activities		1,606			1,858
Effect of exchange rate changes on cash		(552	)		1,417
Net increase / (decrease) in cash and cash equivalents		(13,942	)		(45,941	)
Cash and cash equivalents, beginning of period		58,554			99,923
Cash and cash equivalents, end of period		44,612			53,982

^(a) Interest paid is reported net of cash interest capitalised, which is reported as part of “Purchase of property, plant and equipment.”

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

Interim Report: Three-month period ended 31 March 2016	11
These Condensed Consolidated Interim Financial Statements are unaudited

Notes to the Condensed Consolidated Interim Financial Statements

1 The Company

Interxion Holding NV (the “Company”) is domiciled in The Netherlands. The address of the Company’s registered office is Tupolevlaan 24, 1119 NX, Schiphol-Rijk, The Netherlands. The Consolidated Interim Financial Statements of the Company as at and for the three month periods ended 31 March 2016 comprise the Company and its subsidiaries (together referred to as the “Group”). The Group is a leading pan-European operator of carrier neutral Internet data centres.

2 Basis of preparation

a) Statement of compliance

The Condensed Consolidated Interim Financial Statements have been prepared in accordance with International Financial Reporting Standards (IFRS) IAS 34 Interim Financial Reporting. They do not include all the information required for full annual financial statements, and should be read in conjunction with the audited Consolidated Financial Statements of the Group as at and for the year ended 31 December 2015; these are contained in the 2015 Annual Report (Form 20-F) as filed with the Securities and Exchange Commission on 31 March 2016, which is publicly available on the company’s website – www.interxion.com, or from the SEC website – www.sec.gov.

b) Estimates, judgment and seasonality

The preparation of Condensed Consolidated Interim Financial Statements requires management to make judgments, estimates and assumptions that affect the application of accounting policies and the reported amounts of assets and liabilities, income and expense. Actual results may differ from these estimates. Estimates and underlying assumptions are reviewed on an ongoing basis. Revisions to accounting estimates are recognised in the period in which the estimates are revised and in any future periods affected.

In preparing these Condensed Consolidated Interim Financial Statements, the significant judgments made by management in applying the Group’s accounting policies and the key sources of estimation uncertainty were the same as those applied to the Consolidated Financial Statements as at and for the year ended 31 December 2015 in the 2015 Annual Report (Form 20-F).

The Group’s operations are not significantly exposed to seasonality.

3 Significant accounting policies

The accounting policies applied by the Group in these Condensed Consolidated Interim Financial Statements are the same as those applied by the Group in its Consolidated Financial Statements as at and for the year ended 31 December 2015 in the 2015 Annual Report (Form 20-F), if necessary amended to include new Standards and Interpretations effective as of 1 January 2016. Compared with the accounting principles as applied in the 2015 financial statements these new Standards and Interpretations did not have a significant impact on the financial position or performance of the Group.

4 Financial risk management

The Group’s financial risk management objectives and policies are consistent with those disclosed in the audited Consolidated Financial Statements in the 2015 Annual Report (Form 20-F).

12 Interim Report: Three-month period ended 31 March 2016 These Condensed Consolidated Interim Financial Statements are unaudited

5 Information by segment

Operating segments are to be identified on the basis of internal reports about components of the Group that are regularly reviewed by the chief operating decision maker in order to allocate resources to the segments and to assess their performance.

There are two segments: the first is The Big4 which comprises France, Germany, The Netherlands and the United Kingdom; the second is Rest of Europe, which comprises Austria, Belgium, Denmark, Ireland, Spain, Sweden and Switzerland. Shared expenses, such as corporate management, general and administrative expenses, loans and borrowings, and related expenses and income tax assets and liabilities, are stated in Corporate and other.

The performance of the operating segments is primarily assessed based on the measures of revenue (including recurring and non-recurring revenue components), EBITDA and Adjusted EBITDA. Other information provided, except as noted below, to the Board of Directors is measured in a manner consistent with that in the financial statements.

Interim Report: Three-month period ended 31 March 2016	13
These Condensed Consolidated Interim Financial Statements are unaudited

				Rest of						Corporate
For the three months ended 31 March 2016	Big4			Europe			Subtotal			and other			Total
	€’000			€’000			€’000			€’000			€’000
Recurring revenue		62,266			34,945			97,211			—			97,211
Non-recurring revenue		3,276			1,513			4,789			—			4,789
Revenue		65,542			36,458			102,000			—			102,000
Cost of sales		(24,644	)		(12,079	)		(36,723	)		(2,396	)		(39,119	)
Gross profit/(loss)		40,898			24,379			65,277			(2,396	)		62,881
Other income		98			—			98			—			98
Sales and marketing costs		(1,773	)		(1,376	)		(3,149	)		(4,575	)		(7,724	)
General and administrative costs		(17,541	)		(7,736	)		(25,277	)		(7,109	)		(32,386	)
Operating profit/(loss)		21,682			15,267			36,949			(14,080	)		22,869
Net finance expense														(7,958	)
Profit before tax														14,911
Total assets		876,049			317,481			1,193,530			60,356			1,253,886
Total liabilities		187,441			56,436			243,877			495,004			738,881
Capital expenditure, including intangible assets*		(36,757	)		(10,282	)		(47,039	)		(2,963	)		(50,002	)
Depreciation, amortisation, impairments		(14,292	)		(6,144	)		(20,436	)		(1,042	)		(21,478	)
Adjusted EBITDA		36,181			21,515			57,696			(11,776	)		45,920
For the three months ended 31 March 2015	Big4			Rest of Europe			Subtotal			Corporate and other			Total
	€’000			€’000			€’000			€’000			€’000
Recurring revenue		54,983			32,068			87,051			—			87,051
Non-recurring revenue		3,627			1,804			5,431			—			5,431
Revenue		58,610			33,872			92,482			—			92,482
Cost of sales		(22,293	)		(11,989	)		(34,282	)		(2,000	)		(36,282	)
Gross profit/(loss)		36,317			21,883			58,200			(2,000	)		56,200
Other income		63			—			63			—			63
Sales and marketing costs		(1,806	)		(1,357	)		(3,163	)		(3,516	)		(6,679	)
General and administrative costs		(15,091	)		(7,179	)		(22,270	)		(13,889	)		(36,159	)
Operating profit/(loss)		19,483			13,347			32,830			(19,405	)		13,425
Net finance expense														(6,585	)
Profit before tax														6,840
Total assets		824,515			312,666			1,137,181			51,580			1,188,761
Total liabilities		181,390			58,898			240,288			491,078			731,366
Capital expenditure, including intangible assets*		(33,766	)		(33,125	)		(66,891	)		(679	)		(67,570	)
Depreciation, amortisation, impairments		(11,717	)		(5,435	)		(17,152	)		(1,063	)		(18,215	)
Adjusted EBITDA		31,370			18,978			50,348			(9,743	)		40,605

* Capital expenditure, including intangible assets, represents payments to acquire property, plant and equipment and intangible assets, as recorded in the consolidated statement of cash flows as “Purchase of property, plant and equipment” and “Purchase of intangible assets,” respectively.

14 Interim Report: Three-month period ended 31 March 2016 These Condensed Consolidated Interim Financial Statements are unaudited

Reconciliation to adjusted EBITDA

	For the three months ended
	31 Mar			31 Mar
	2016			2015
Consolidated	€’000			€’000
Profit for the period attributable to shareholders		10,219			4,425
Income tax expense		4,692			2,415
Profit before taxation		14,911			6,840
Finance income		(145	)		(1,208	)
Finance expense		8,103			7,793
Operating profit		22,869			13,425
Depreciation, amortisation and impairments		21,478			18,215
EBITDA(1)		44,347			31,640
Share-based payments		1,442			2,241
Increase/(decrease) in provision for onerous lease contracts		—			(100	)
M&A transaction costs(2)		229			6,887
Income from sub-leases of unused data centre sites		(98	)		(63	)
Adjusted EBITDA(1)		45,920			40,605
	For the three months ended
	31 Mar			31 Mar
	2016			2015
Big4	€’000			€’000
Operating profit		21,682			19,483
Depreciation, amortisation and impairments		14,292			11,717
EBITDA(1)		35,974			31,200
Share-based payments		305			333
Increase/(decrease) in provision for onerous lease contracts		—			(100	)
Income from sub-leases of unused data centre sites		(98	)		(63	)
Adjusted EBITDA(1)		36,181			31,370

Interim Report: Three-month period ended 31 March 2016	15
These Condensed Consolidated Interim Financial Statements are unaudited

	For the three months ended
	31 Mar			31 Mar
	2016			2015
Rest of Europe	€’000			€’000
Operating profit		15,267			13,347
Depreciation, amortisation and impairments		6,144			5,435
EBITDA(1)		21,411			18,782
Share-based payments		104			196
Adjusted EBITDA(1)		21,515			18,978
	For the three months ended
	31 Mar			31 Mar
	2016			2015
Corporate and other	€’000			€’000
Operating profit/(loss)		(14,080	)		(19,405	)
Depreciation, amortisation and impairments		1,042			1,063
EBITDA(1)		(13,038	)		(18,342	)
Share-based payments		1,033			1,712
M&A transaction costs(2)		229			6,887
Adjusted EBITDA(1)		(11,776	)		(9,743	)

(1) EBITDA is defined as operating profit plus depreciation, amortisation and impairment of assets. We define Adjusted EBITDA as EBITDA adjusted to exclude share-based payments, M&A transaction costs, increase/(decrease) in provision for onerous lease contracts and income from sub-leases on unused data centre sites. We present EBITDA and Adjusted EBITDA as additional information because we understand that they are measures used by certain investors and because they are used in our financial covenants in our €100 million revolving facility and our 6.00% Senior Secured Notes due 2020. Other companies may, however, present EBITDA and Adjusted EBITDA differently. EBITDA and Adjusted EBITDA are not measures of financial performance under IFRS and should not be considered as an alternative to operating profit or as a measure of liquidity, or an alternative to net income as indicators of our operating performance or any other measure of performance implemented in accordance with IFRS.

(2) “M&A transaction costs” are costs associated with the evaluation, diligence and conclusion or termination of merger or acquisition activity. In the quarter ended 31 March 2015, M&A transaction costs included €6.9 million related to the abandoned merger with TelecityGroup. In the quarter ended 31 March 2016, M&A transaction costs included €0.2 million related to other activity including the evaluation of potential asset acquisitions.

16 Interim Report: Three-month period ended 31 March 2016 These Condensed Consolidated Interim Financial Statements are unaudited

6 Finance income and expense

	For the three months ended
	31 Mar 2016			31 Mar 2015
	€’000			€’000
Foreign currency exchange gains		142			1,178
Bank and other interest		3			30
Finance income		145			1,208
Interest expense on Senior Secured Notes, bank and other loans		(6,917	)		(6,583	)
Interest expense on finance leases		(827	)		(720	)
Interest expense on provision for onerous lease contracts		(11	)		(39	)
Other financial expenses		(348	)		(451	)
Finance expense		(8,103	)		(7,793	)
Net finance expense		(7,958	)		(6,585	)

The “Interest expense on provision for onerous lease contracts” relates to the unwinding of the discount rate used to calculate the “Provision for onerous lease contracts”.

7 Income tax expense

The Group’s consolidated effective tax rate of 31%, in respect of continuing operations for the three months ended 31 March 2016, was affected by the non-tax-deductible share-based payments. The effective tax rate for the three months ended 31 March 2015 was 35%.

8 Property, plant and equipment

Acquisitions

During the three months ended 31 March 2016, the Group acquired tangible fixed assets (primarily data-centre-related assets) at a cost of €49,460,000 (three months ended 31 March 2015: €53,600,000).

Capitalised interest relating to borrowing costs for the three months ended 31 March 2016 amounted to €465,000 (three months ended 31 March 2015: €923,000). The cash effect of the interest capitalised for the three months ended 31 March 2016 amounted to €1,041,000, which in the Statement of Cash Flows is presented under “Purchase of property, plant and equipment” (three months ended 31 March 2015: €1,969,000).

Interim Report: Three-month period ended 31 March 2016	17
These Condensed Consolidated Interim Financial Statements are unaudited

Capital commitments

At 31 March 2016, the Group had outstanding capital commitments of €117,200,000. These commitments are expected to be substantially settled during the remainder of 2016.

On 15 March 2016 the Group entered into a contract to lease properties in Marseille, France. The lease, which covers land and buildings, will commence during the second quarter of 2016.

9 Financial Instruments

Fair values versus carrying amounts

As of 31 March 2016, the market price of the 6.00% Senior Secured Notes due 2020 was 105.875 (31 March 2015: 108.034). Using this market price, the fair value of the Senior Secured Notes due 2020 would have been approximately €503 million (31 March 2015: €514 million), compared with their nominal value of €475 million (31 March 2015: €475 million).

At 31 March 2016, the Group had a cash flow hedge carried at a negative fair value, to hedge the interest rate risk of part of two mortgages.

As of 31 March 2016, the fair value of all mortgages were equal to their carrying amount of €43.8 million. As of 31 March 2016, the fair value of the financial lease liabilities were €41.3 million compared with the carrying amount of €34.7 million.

The carrying amounts of other financial assets and liabilities approximate their fair value.

Fair values and hierarchy

The Company regularly reviews significant unobservable inputs and valuation adjustments. If third party information, such as broker quotes or pricing services, is used to measure fair values, then the Company assesses the evidence obtained from the third parties to support the conclusion that such valuations meet the requirements of IFRS, including the level in the fair value hierarchy in which such valuations should be classified. Significant valuation issues are reported to the Company’s Audit Committee.

When measuring the fair value of an asset or a liability, the Company uses observable market data to the extent possible. Fair values are categorised into different levels in a fair value hierarchy based on the inputs used in the valuation techniques as follows:

Level 1: quoted prices (unadjusted) in active markets for identical assets or liabilities.

Level 2: inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly (i.e., as prices) or indirectly (i.e., derived from prices).

Level 3: inputs for the asset or liability that are not based on observable market data (unobservable inputs).

If the inputs used to measure the fair value of an asset or a liability fall into different levels of the fair value hierarchy, then the fair value measurement is categorised in its entirety in the same level of the fair value hierarchy as the lowest level input that is significant to the entire measurement. The Company recognises transfers between levels of the fair value hierarchy at the end of the reporting period during which the change has occurred.

18 Interim Report: Three-month period ended 31 March 2016 These Condensed Consolidated Interim Financial Statements are unaudited

The values of the instruments are:

	Carrying value			Fair value
				Level 1			Level 2			Level 3
31 March 2016
Senior secured notes 6.00% due 2020		(475,470	)		(503,000	)		—			—
Finance leases		(34,690	)		—			(41,323	)		—
Mortgages		(43,800	)		—			(43,800	)		—
Interest rate swap		(418	)		—			(418	)		—
Financial asset		924			—			—			924
31 December 2015
Senior secured notes 6.00% due 2020		(475,503	)		(502,000	)		—			—
Finance leases		(34,582	)		—			(41,012	)		—
Mortgages		(44,073	)		—			(44,073	)		—
Interest rate swap		(321	)		—			(321	)		—

No changes in levels of hierarchy, or transfers between levels, occurred in the reporting period. Fair values were obtained from quoted market prices in active markets or, where no active market exists, by using valuation techniques. Valuation techniques include discounted cash flow models using inputs as market interest rates and cash flows.

The financial asset which is in Level 3 as from 2016, represents a bridge loan given by Interxion Participation 1 B.V.

10 Borrowings

As at 31 March 2016, our €100.0 million revolving facility was undrawn.

11 Related party transactions

In the first three months of 2016, the Board of Directors approved a conditional award of 121,849 performance shares to certain members of key management, including the Executive Director. The conditional award of 61,469 performance shares to the Executive Director is subject to the approval of the Annual General Meeting of Shareholders, which is anticipated to be held in June 2017.

Interim Report: Three-month period ended 31 March 2016	19
These Condensed Consolidated Interim Financial Statements are unaudited

12 Subsequent events

Mortgage

On 8 April 2016, the Group completed a €14.6 million financing. The facility is secured by a mortgage on the data centre property in Vienna (Austria), acquired by Interxion Real Estate VII GmbH in January 2015, a pledge on the lease agreement, and is guaranteed by Interxion Real Estate Holding B.V. The facility has a maturity of fourteen years and nine months, and has a variable interest rate based on EURIBOR plus 195 basis points. The principal amount is to be repaid in 177 monthly instalments, increasing from €76,000 to €91,750. The first monthly installment of €76,000 is due on 30 April 2016, and a final repayment of €91,750 is due on 31 December 2030.

Additional notes under Indenture 3 July 2013

On 14 April 2016, the Company completed the issuance of additional €150 million aggregate principal amount of its 6.00% Senior Secured Notes due 2020 (the “Notes”). The net proceeds of the offering were approximately € 155 million. The Notes are guaranteed by certain subsidiaries of the Company. The Notes were issued under the indenture dated July 3, 2013 pursuant to which the Company has previously issued €475 million in aggregate principal amount of 6.00% Senior Secured Notes due 2020.

20 Interim Report: Three-month period ended 31 March 2016 These Condensed Consolidated Interim Financial Statements are unaudited