Document:

EX-10.2

 Exhibit 10.2 
 EXECUTION COPY 
 CONTRIBUTION AGREEMENT 

DATED AS OF NOVEMBER 20, 2012 
 BY AND AMONG 
 CYRUSONE LP, 

a Maryland limited partnership 
 AND 
 DATA CENTER INVESTMENTS INC., 

a Delaware corporation 

 TABLE OF CONTENTS 

 

							
	 	 	 	  	Page	 
	
	ARTICLE I	  
	
	CONTRIBUTION	  
			
	 Section 1.01.
	 	 CONTRIBUTION TRANSACTION
	  	 	2	  
	 Section 1.02.
	 	 CONSIDERATION
	  	 	2	  
	 Section 1.03.
	 	 FURTHER ACTION
	  	 	2	  
	 Section 1.04.
	 	 TREATMENT AS CONTRIBUTION
	  	 	2	  
	
	ARTICLE II	  
	
	CLOSING	  
			
	 Section 2.01.
	 	 CONDITIONS PRECEDENT
	  	 	3	  
	 Section 2.02.
	 	 TIME AND PLACE
	  	 	4	  
	 Section 2.03.
	 	 DELIVERY OF OP UNITS
	  	 	4	  
	 Section 2.04.
	 	 CLOSING DELIVERIES
	  	 	4	  
	 Section 2.05.
	 	 TERM OF THE AGREEMENT
	  	 	4	  
	 Section 2.06.
	 	 EFFECT OF TERMINATION
	  	 	5	  
	 Section 2.07.
	 	 TAX WITHHOLDING
	  	 	5	  
	
	ARTICLE III	  
	
	REPRESENTATIONS AND WARRANTIES OF THE OPERATING PARTNERSHIP	  
			
	 Section 3.01.
	 	 ORGANIZATION; AUTHORITY
	  	 	5	  
	 Section 3.02.
	 	 DUE AUTHORIZATION
	  	 	6	  
	 Section 3.03.
	 	 CONSENTS AND APPROVALS
	  	 	6	  
	 Section 3.04.
	 	 NO VIOLATION
	  	 	6	  
	 Section 3.05.
	 	 VALIDITY OF OP UNITS
	  	 	6	  
	 Section 3.06.
	 	 LITIGATION
	  	 	6	  
	 Section 3.07.
	 	 OP AGREEMENT
	  	 	7	  
	 Section 3.08.
	 	 LIMITED ACTIVITIES
	  	 	7	  
	 Section 3.09.
	 	 NO OTHER REPRESENTATIONS OR WARRANTIES
	  	 	7	  
	
	ARTICLE IV	  
	
	REPRESENTATIONS AND WARRANTIES OF THE CONTRIBUTOR	  
			
	 Section 4.01.
	 	 ORGANIZATION; AUTHORITY
	  	 	7	  
	 Section 4.02.
	 	 DUE AUTHORIZATION
	  	 	8	  
	 Section 4.03.
	 	 OWNERSHIP OF OWNERSHIP INTERESTS
	  	 	8	  
	 Section 4.04.
	 	 OWNERSHIP OF THE PROPERTIES
	  	 	8	  
	 Section 4.05.
	 	 CONSENTS AND APPROVALS
	  	 	8	  

  
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	 Section 4.06.
	 	 NO VIOLATION
	  	 	9	  
	 Section 4.07.
	 	 NON-FOREIGN PERSON
	  	 	9	  
	 Section 4.08.
	 	 TAXES
	  	 	9	  
	 Section 4.09.
	 	 SOLVENCY
	  	 	9	  
	 Section 4.10.
	 	 LITIGATION
	  	 	9	  
	 Section 4.11.
	 	 COMPLIANCE WITH LAWS
	  	 	9	  
	 Section 4.12.
	 	 EMINENT DOMAIN
	  	 	10	  
	 Section 4.13.
	 	 LICENSES AND PERMITS
	  	 	10	  
	 Section 4.14.
	 	 ENVIRONMENTAL COMPLIANCE
	  	 	10	  
	 Section 4.15.
	 	 CUSTOMER LEASES
	  	 	10	  
	 Section 4.16.
	 	 TANGIBLE PERSONAL PROPERTY
	  	 	11	  
	 Section 4.17.
	 	 ZONING
	  	 	11	  
	 Section 4.18.
	 	 INVESTMENT
	  	 	11	  
	 Section 4.19.
	 	 NO OTHER REPRESENTATIONS OR WARRANTIES
	  	 	12	  
	
	ARTICLE V	  
	
	INDEMNIFICATION	  
			
	 Section 5.01.
	 	 GENERAL INDEMNIFICATION
	  	 	12	  
	 Section 5.02.
	 	 NOTICE OF CLAIMS
	  	 	12	  
	 Section 5.03.
	 	 THIRD PARTY CLAIMS
	  	 	13	  
	 Section 5.04.
	 	 EXPIRATION
	  	 	13	  
	 Section 5.05.
	 	 LIMITATIONS ON AMOUNTS
	  	 	13	  
	 Section 5.06.
	 	 EXCLUSIVE REMEDY
	  	 	14	  
	 Section 5.07.
	 	 TAX TREATMENT
	  	 	14	  
	
	ARTICLE VI	  
	
	COVENANTS AND OTHER AGREEMENTS	  
			
	 Section 6.01.
	 	 COVENANTS OF THE CONTRIBUTOR
	  	 	14	  
	 Section 6.02.
	 	 COMMERCIALLY REASONABLE EFFORTS BY THE OPERATING PARTNERSHIP AND THE CONTRIBUTOR
	  	 	15	  
	 Section 6.03.
	 	 TAX AGREEMENT
	  	 	15	  
	
	ARTICLE VII	  
	
	WAIVERS AND CONSENTS	  
	
	ARTICLE VIII	  
	
	GENERAL PROVISIONS	  
			
	 Section 8.01.
	 	 NOTICES
	  	 	15	  
	 Section 8.02.
	 	 DEFINITIONS
	  	 	16	  
	 Section 8.03.
	 	 COUNTERPARTS
	  	 	19	  

  
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	 Section 8.04.
	 	 ENTIRE AGREEMENT; THIRD-PARTY BENEFICIARIES
	  	 	19	  
	 Section 8.05.
	 	 GOVERNING LAW
	  	 	19	  
	 Section 8.06.
	 	 ASSIGNMENT
	  	 	19	  
	 Section 8.07.
	 	 JURISDICTION
	  	 	19	  
	 Section 8.08.
	 	 SEVERABILITY
	  	 	19	  
	 Section 8.09.
	 	 RULES OF CONSTRUCTION
	  	 	20	  
	 Section 8.10.
	 	 EQUITABLE REMEDIES
	  	 	20	  
	 Section 8.11.
	 	 DESCRIPTIVE HEADINGS
	  	 	20	  
	 Section 8.12.
	 	 NO PERSONAL LIABILITY CONFERRED
	  	 	20	  
	 Section 8.13.
	 	 AMENDMENT; WAIVER
	  	 	20	  

  
 iii

 Defined Terms 

 

			
	 TERM
	 	 SECTION

	 Affiliate
	 	Section 8.02
	 Agreement
	 	Introduction
	 Business Day
	 	Section 8.02
	 CBI
	 	Section 8.02
	 Claim
	 	Section 3.10
	 Claim Notice
	 	Section 3.10
	 Closing
	 	Section 2.02
	 Closing Date
	 	Section 2.02
	 Code
	 	Section 8.02
	 Contributor
	 	Introduction
	 Customer Leases
	 	Section 4.15
	 CyrusOne Credit Agreement
	 	Section 8.02
	 CyrusOne GP
	 	Recitals
	 CyrusOne LLC
	 	Recitals
	 CyrusOne LLC Assets
	 	Section 4.07
	 Debt Issuance
	 	Recitals
	 Environmental Laws
	 	Section 8.02
	 Environmental Permits
	 	Section 8.02
	 Expiration Date
	 	Article V
	 Formation Transactions
	 	Recitals
	 Governmental Authority
	 	Section 8.02
	 Hazardous Materials
	 	Section 8.02
	 Indemnified Party
	 	Article V
	 Indemnifying Party
	 	Article V
	 Law
	 	Section 8.02
	 Liens
	 	Section 8.02
	 LLC Agreement
	 	Section 8.02
	 Losses
	 	Article V
	 Material Adverse Effect
	 	Section 8.02
	 OP Units
	 	Recitals
	 OP Value
	 	Section 5.05
	 Operating Partnership
	 	Introduction
	 Operating Partnership Agreement
	 	Section 1.05
	 Operating Partnership Subsidiaries
	 	Section 3.01
	 Order
	 	Section 8.02
	 Outside Date
	 	Section 2.06
	 Ownership Interests
	 	Recitals
	 Permitted Lien
	 	Section 8.02
	 Person
	 	Section 8.02
	 Properties
	 	Recitals
	 REIT
	 	Introduction
	 REIT Common Stock
	 	Section 8.02
	 Release
	 	Section 8.02
	 Securities Act
	 	Section 8.02
	 Subsidiary
	 	Section 8.02
	 Tax
	 	Section 8.02
	 Tax Return
	 	Section 8.02
	 Third Party Claims
	 	Article V

  
 iv 

			
	 TERM
	 	 SECTION

	 Total Consideration
	 	Section 1.02

  
 v 

 CONTRIBUTION AGREEMENT 

THIS CONTRIBUTION AGREEMENT is made and entered into as of November 20, 2012 (this “Agreement”), by and between
CyrusOne LP, a Maryland limited partnership (the “Operating Partnership”), which is a Subsidiary of CyrusOne Inc., a Maryland corporation (the “REIT”), and Data Center Investments Inc., a Delaware corporation (the
“Contributor”). 
 RECITALS 
 WHEREAS, the REIT desires to consolidate the ownership of a portfolio of properties listed on Exhibit A (the “Properties”) through a series of transactions whereby the Operating
Partnership will acquire all of the interests in CyrusOne LLC, a Delaware limited liability company (“CyrusOne LLC”), which owns or holds, directly or indirectly, fee simple or leasehold interests in the Properties; 

WHEREAS, the Contributor owns all of the interests in CyrusOne LLC; 

WHEREAS, the transactions contemplated by this Agreement and certain other internal restructuring transactions to be completed prior to
or on the Closing Date as set forth on Exhibit B-1 (collectively, the “Formation Transactions”) are related to the proposed issuance of 6.375% senior notes due 2022 by the Operating Partnership and CyrusOne Finance Corp., a
Maryland corporation, as co-issuers (the “Debt Issuance”); 
 WHEREAS, the Contributor will transfer its
interests in CyrusOne LLC (which includes all of CyrusOne LLC’s interests in CyrusOne Foreign Holdings LLC, a Delaware limited liability company, CyrusOne UK Holdco LLP, a U.K. limited liability partnership and CyrusOne UK Limited, a U.K.
limited company, each a Subsidiary of CyrusOne LLC) to the Operating Partnership in exchange for units of limited partnership interest (“OP Units”) in the Operating Partnership; 

WHEREAS, the Contributor desires to, and the Operating Partnership desires the Contributor to, contribute to the Operating Partnership,
all of the Contributor’s right, title and interest, free and clear of all Liens, except for Permitted Liens, including, without limitation, all of its voting rights and interests in the capital, profits and losses of CyrusOne LLC or any
property distributable therefrom, constituting all of its interests in and to CyrusOne LLC (such rights, title and interests in and to CyrusOne LLC are collectively referred to as the “Ownership Interests”), in exchange for OP
Units, on the terms and subject to the conditions set forth herein; and 
 WHEREAS, all necessary approvals have been obtained
by the parties to this Agreement to consummate the transactions contemplated herein and the other Formation Transactions. 

NOW, THEREFORE, in consideration of the foregoing and the representations, warranties, covenants and other terms contained in this
Agreement, the parties hereto, intending to be legally bound hereby, agree as follows: 

 ARTICLE I 
 CONTRIBUTION 
 Section 1.01. CONTRIBUTION TRANSACTION. At the Closing
and subject to the terms and conditions contained in this Agreement, the Contributor hereby assigns, sets over, and transfers to the Operating Partnership, absolutely and unconditionally and free and clear of all Liens, except for Permitted Liens,
all of the Contributor’s right, title and interest in and to the Ownership Interests, in exchange for the consideration set forth in Section 1.02. 
 Section 1.02. CONSIDERATION. The Operating Partnership shall, in exchange for the Ownership Interests, transfer to the Contributor 55,038,337 OP Units (the “Total Consideration”).
The transfer of OP Units to the Contributor shall be evidenced by an amendment to the Operating Partnership Agreement in such form as shall be reasonably acceptable to the Contributor. 

Section 1.03. FURTHER ACTION. If, at any time after the Closing, the Operating Partnership shall determine or be advised that any
deeds, bills of sale, assignments, assurances or other actions or things are necessary or desirable to vest, perfect or confirm of record or otherwise in the Operating Partnership the right, title or interest in or to the Ownership Interests
contributed by the Contributor, the Contributor shall execute and deliver all such deeds, bills of sale, assignments and assurances and take and do all such other actions and things as may be necessary or desirable to vest, perfect or confirm any
and all right, title and interest in or to the Ownership Interests or otherwise to carry out this Agreement; provided, that the Contributor shall not be obligated to take any action or execute any document if the additional actions or
documents impose additional liabilities, obligations, covenants, responsibilities, representations or warranties on the Contributor that are not contemplated by this Agreement or reasonably inferable by the terms herein. 

Section 1.04. TREATMENT AS CONTRIBUTION. 
 (a) Any transfer, assignment and exchange by the Contributor effectuated pursuant to this Agreement shall constitute a “Capital Contribution” by the Contributor to the Operating Partnership as
defined in Article I of the Operating Partnership Agreement (as defined) and is intended to be governed by Section 721(a) of the Code. 
 (b) The Contributor and the Operating Partnership agree to the tax treatment described in Section 1.04(a), and the Contributor and the Operating Partnership shall file their respective Tax Returns
consistent with such treatment, unless otherwise required by applicable Law. 

  
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 ARTICLE II 
 CLOSING 
 Section 2.01. CONDITIONS PRECEDENT. 

(a) Condition to Each Party’s Obligations. The respective obligation of each party to effect the contributions
contemplated by this Agreement and to consummate the other transactions contemplated hereby to occur on the Closing Date is subject to the satisfaction or waiver of the following conditions: 

(i) Debt Issuance Proceeds. All conditions to the Debt Issuance shall have been satisfied and the initial
purchasers under the purchase agreement relating to the Debt Issuance shall be prepared to fund the Debt Issuance. This condition may not be waived by any party. 

(ii) No Injunction. No Governmental Authority shall have enacted, issued, promulgated, enforced or entered any
statute, rule, regulation, executive order, decree, judgment, injunction or other order (whether temporary, preliminary or permanent), in any case which is in effect and which prevents or prohibits consummation of any of the transactions
contemplated in this Agreement or any of the other Formation Transactions nor shall any of the same brought by a Governmental Authority of competent jurisdiction be pending that seeks the foregoing. 

(iii) Formation Transactions. The Formation Transactions set forth on Exhibit B-2 shall have been
consummated not later than concurrently herewith. This condition may not be waived by any party. 
 (b)
Conditions to Obligations of the Operating Partnership. The obligations of the Operating Partnership are further subject to satisfaction of the following conditions (any of which may be waived by the Operating Partnership in whole or in
part): 
 (i) Representations and Warranties. Except as would not have a Material Adverse Effect, the
representations and warranties of the Contributor contained in this Agreement shall be true and correct at and as of the Closing (except to the extent that any such representation or warranty speaks as of an earlier date, in which case it must be
true and correct only as of such earlier date). 
 (ii) Performance by the Contributor. The Contributor
shall have performed in all material respects all agreements and covenants required by this Agreement to be performed or complied with by it on or prior to the Closing Date. 

(iii) Consents, Etc. All necessary consents and approvals of Governmental Authorities or third parties (including
lenders) for the Contributor to consummate the transactions contemplated hereby (except for those the absence of which would not have a material adverse effect on the ability of the 

  
 3 

 
Contributor to consummate the transactions contemplated by this Agreement) and the other Formation Transactions shall have been obtained. 

(iv) No Material Adverse Change. There shall not have occurred between the date hereof and the Closing Date any
material adverse change in the business, financial condition, properties or results of operations of CyrusOne LLC. 
 (c) Conditions to Obligations of the Contributor. The obligations of the Contributor are further subject to satisfaction of the following conditions (any of which may be waived by the Contributor
in whole or in part): 
 (i) Representations and Warranties. Except as would not have a Material Adverse
Effect, the representations and warranties of the Operating Partnership contained in this Agreement shall be true and correct at and as of the Closing (except to the extent that any such representation or warranty speaks as of an earlier date, in
which case it must be true and correct only as of such earlier date). 
 (ii) Performance by the Operating
Partnership. The Operating Partnership shall have performed in all material respects all agreements and covenants required by this Agreement to be performed or complied with by it on or prior to the Closing Date. 

Section 2.02. TIME AND PLACE. Unless this Agreement shall have been terminated pursuant to Section 2.05, and subject to
satisfaction or waiver of the conditions in Section 2.01, the closing of the transfers contemplated by Sections 1.01 and 1.02 and the other transactions contemplated hereby (the “Closing”) shall occur immediately prior to the
time the Operating Partnership receives the proceeds from the Debt Issuance on November 20, 2012 (the “Closing Date”). The Closing shall take place at the offices of Cravath, Swaine & Moore LLP, 825 Eighth Avenue, New
York, New York 10019 or such other place as mutually determined by the parties hereto. The transfers described in Sections 1.01 and 1.02 and all closing deliveries shall be deemed concurrent for all purposes. 

Section 2.03. DELIVERY OF OP UNITS. The issuance of the OP Units to the Contributor shall be evidenced by an amendment to the
Operating Partnership Agreement in such form as shall be reasonably acceptable to the Contributor. 
 Section 2.04. CLOSING
DELIVERIES. At the Closing, the parties shall make, execute, acknowledge and deliver, or cause to be made, executed, acknowledged and delivered, any other documents reasonably requested by the Operating Partnership or the Contributor or reasonably
necessary or desirable to assign, transfer, convey, contribute and deliver the Ownership Interests, free and clear of all Liens, except for Permitted Liens, and to effectuate the transactions contemplated hereby. 

Section 2.05. TERM OF THE AGREEMENT. This Agreement shall terminate automatically if the contributions contemplated by this
Agreement shall not have been consummated on or prior to the second Business Day following the date hereof (such date is 

  
 4 

 
hereinafter referred to as the “Outside Date”), unless extended in writing by the parties to this Agreement. 

Section 2.06. EFFECT OF TERMINATION. In the event of termination of this Agreement for any reason, all obligations on the part of
the Operating Partnership and the Contributor under this Agreement shall terminate, except that the obligations set forth in Article VIII shall survive; it being understood and agreed, however, for the avoidance of doubt, that if this Agreement is
terminated because one or more of the conditions to a non-breaching party’s obligations under this Agreement is not satisfied by the Outside Date as a result of the other party’s material breach of a covenant, representation, warranty or
other obligation under this Agreement, the non-breaching party’s right to pursue all legal remedies with respect to such breach will survive such termination unimpaired. 
 Section 2.07. TAX WITHHOLDING. The Operating Partnership shall be entitled to deduct and withhold, from the consideration payable pursuant to this Agreement to the Contributor, such amounts as the
Operating Partnership is required to deduct and withhold with respect to the making of such payment under the Code or any provision of state, local or foreign Tax Law. To the extent that amounts are so withheld by the Operating Partnership, such
withheld amounts shall be treated for all purposes of this Agreement as having been paid to the Contributor in respect of which such deduction and withholding was made by the Operating Partnership. 

ARTICLE III 
 REPRESENTATIONS AND WARRANTIES OF THE OPERATING PARTNERSHIP 
 The Operating
Partnership hereby represents and warrants to and covenants with the Contributor as follows: 
 Section 3.01. ORGANIZATION;
AUTHORITY. 
 (a) The Operating Partnership is a limited partnership duly organized, validly existing and in good
standing under the Law of the State of Maryland. The Operating Partnership has all requisite power and authority to enter this Agreement and each other agreement, document and instrument contemplated hereby and to carry out the transactions
contemplated hereby and thereby, and to own, lease or operate its property and to carry on its business as presently conducted and, to the extent required under applicable Law, is qualified to do business and is in good standing in each jurisdiction
in which the nature of its business or the character of its property make such qualification necessary, other than in such jurisdictions where the failure to be so qualified would not have a material adverse effect on the business, financial
condition, properties or results of operations of the Operating Partnership and the Subsidiaries of the Operating Partnership (the “Operating Partnership Subsidiaries” and, each individually, an “Operating Partnership
Subsidiary”), taken as a whole. 
 (b) Exhibit C sets forth as of the date hereof, (i) each
Operating Partnership Subsidiary, (ii) the ownership interest therein of the Operating Partnership and (iii) if not 

  
 5 

 
wholly owned by the Operating Partnership, the identity and ownership interest of each of the other owners of such Operating Partnership Subsidiary. Each Operating Partnership Subsidiary has been
duly organized or formed and is validly existing under the Law of its jurisdiction of organization or formation, as applicable, has all power and authority to own, lease or operate its property and to carry on its business as presently conducted
and, to the extent required under applicable Law, is qualified to do business and is in good standing in each jurisdiction in which the nature of its business or the character of its property make such qualification necessary, except where the
failure to be so qualified would not have a material adverse effect on the business, financial condition, properties or results of operations of the Operating Partnership and the Operating Partnership Subsidiaries, taken as a whole. 

Section 3.02. DUE AUTHORIZATION. The execution, delivery and performance of this Agreement and each other agreement, document and
instrument contemplated hereby by the Operating Partnership has been duly and validly authorized by all necessary action of the Operating Partnership. This Agreement and each agreement, document and instrument executed and delivered by or on behalf
of the Operating Partnership pursuant to this Agreement constitutes, or when executed and delivered will constitute, the legal, valid and binding obligation of the Operating Partnership, each enforceable against the Operating Partnership in
accordance with its terms, subject to applicable bankruptcy, insolvency, moratorium or other similar Law relating to creditors’ rights and general principles of equity. 
 Section 3.03. CONSENTS AND APPROVALS. Except in connection with the Debt Issuance or as set forth on Schedule 3.03, no material consent, waiver, approval or authorization of, or filing with,
any Person or Governmental Authority or under any applicable Law is required to be obtained by the Operating Partnership in connection with the execution, delivery and performance of this Agreement, the transactions contemplated hereby or the other
Formation Transactions. 
 Section 3.04. NO VIOLATION. None of the execution, delivery or performance of this Agreement, or
any agreement contemplated hereby between the parties to this Agreement or the consummation of the transactions contemplated hereby or thereby (including the other Formation Transactions) does or will, with or without the giving of notice, lapse of
time, or both, violate, conflict with, result in a breach of, or constitute a default under (a) the organizational documents of the Operating Partnership, (b) any term or provision of any judgment, order, writ, injunction, or decree
binding on the Operating Partnership or (c) any other agreement to which the Operating Partnership is a party thereto. 

Section 3.05. VALIDITY OF OP UNITS. The OP Units to be issued to the Contributor pursuant to this Agreement have been duly
authorized by the Operating Partnership and, when issued against the consideration therefor, will be validly issued by the Operating Partnership, free and clear of all Liens created by the Operating Partnership (other than Liens created by the
Operating Partnership Agreement). 
 Section 3.06. LITIGATION. There is no action, suit or proceeding pending or, to the
Operating Partnership’s knowledge, threatened against the Operating Partnership or any Operating Partnership Subsidiary which, if adversely determined, would be reasonably expected 

  
 6 

 
to have a material adverse effect on the business, financial condition, properties or results of operations of the Operating Partnership and the Operating Partnership Subsidiaries, taken as a
whole, or which would reasonably be expected to impair the ability of the Operating Partnership to execute or deliver, or perform its obligations under, this Agreement and each other agreement, document and instrument executed by it pursuant to this
Agreement or to consummate the transactions contemplated hereby or thereby. 
 Section 3.07. OP AGREEMENT. Attached as
Exhibit D hereto is a true and complete copy of the Operating Partnership Agreement. 
 Section 3.08. LIMITED
ACTIVITIES. Except for activities in connection with the Debt Issuance or the Formation Transactions, the Operating Partnership and the Operating Partnership Subsidiaries have not engaged in any material business or incurred any material
obligations. 
 Section 3.09. NO OTHER REPRESENTATIONS OR WARRANTIES. Other than the representations and warranties
expressly set forth in this Article III, the Operating Partnership shall not be deemed to have made any other representation or warranty in connection with this Agreement or the transactions contemplated hereby. 

ARTICLE IV 

REPRESENTATIONS AND WARRANTIES OF THE CONTRIBUTOR 
 The Contributor hereby represents, warrants and agrees that as of the Closing Date: 
 Section 4.01. ORGANIZATION; AUTHORITY. 
 (a) The Contributor
is a corporation duly organized, validly existing and in good standing under the Law of the State of Delaware. The Contributor has all requisite power and authority to enter this Agreement and each other agreement, document and instrument
contemplated hereby and to carry out the transactions contemplated hereby and thereby, and to own, lease or operate its property and to carry on its business as presently conducted and, to the extent required under applicable Law, is qualified to do
business and is in good standing in each jurisdiction in which the nature of its business or the character of its property make such qualification necessary, other than in such jurisdictions where the failure to be so qualified would not have a
material adverse effect on the business, financial condition, properties or results of operations of the Contributor. 
 (b) CyrusOne LLC is a limited liability company duly organized, validly existing and in good standing under the Law of the State of Delaware. CyrusOne LLC has all power and authority to own, lease or
operate its property and to carry on its business as presently conducted and, to the extent required under applicable Law, is qualified to do business and is in good standing in each jurisdiction in which the nature of its business or the character
of its property make such qualification necessary, except where the failure to be so qualified would not have a material adverse effect on the business, financial condition, properties or results of operations of CyrusOne LLC. 

  
 7 

 Section 4.02. DUE AUTHORIZATION. The execution, delivery and performance of this
Agreement and each other agreement, document and instrument contemplated hereby by the Contributor has been duly and validly authorized by all necessary action of the Contributor. This Agreement and each agreement, document and instrument executed
and delivered by or on behalf of the Contributor pursuant to this Agreement constitutes, or when executed and delivered will constitute, the legal, valid and binding obligation of the Contributor, each enforceable against the Contributor in
accordance with its terms, subject to applicable bankruptcy, insolvency, moratorium or other similar Law relating to creditors’ rights and general principles of equity. 
 Section 4.03. OWNERSHIP OF OWNERSHIP INTERESTS. The Contributor is the record owner of the Ownership Interests and has the power and authority to transfer, sell, assign and convey to the Operating
Partnership such Ownership Interests free and clear of any Liens, except for Permitted Liens, and, upon delivery of the consideration for such Ownership Interests as provided herein, the Operating Partnership will acquire good and valid title
thereto, free and clear of any Liens, except for Permitted Liens and Liens created by the Operating Partnership Agreement. Except as provided for or contemplated by this Agreement or any other agreement, document or instrument contemplated hereby,
there are no rights, subscriptions, warrants, options, conversion rights, preemptive rights, agreements, instruments or understandings of any kind outstanding (a) relating to the Ownership Interests or (b) to purchase, transfer or to
otherwise acquire, or to in any way encumber, any of the interests which comprise such Ownership Interests or any securities or obligations of any kind convertible into any of the interests which comprise such Ownership Interests or other equity
interests or profit participation of any kind in CyrusOne LLC. All of the issued and outstanding Ownership Interests have been duly authorized and are validly issued, fully paid and non-assessable. 

Section 4.04. OWNERSHIP OF THE PROPERTIES. 
 (a) Except as set forth on Schedule 4.04(a), CyrusOne LLC or any Subsidiary of CyrusOne LLC that owns any of the Property that is designated as owned real property in Exhibit A hereto has
good and marketable title in fee simple to such Property free and clear of all Liens except Permitted Liens. 

(b) Except as set forth on Schedule 4.04(b), CyrusOne LLC or any Subsidiary of CyrusOne LLC that leases any of the
Property that is designated as leased real property in Exhibit A hereto has a valid leasehold interest in, and enjoys peaceful and undisturbed possession (consistent with historical use) of such Property, in each case free and clear of all
Liens except Permitted Liens. Neither CyrusOne LLC nor any Subsidiary of CyrusOne LLC has received any written notice of any material uncured default under any of the real property leases pursuant to which it leases such Properties, and to the
Contributor’s knowledge there is no material uncured default by any landlord thereunder, except in each case as would not reasonably be expected to have a Material Adverse Effect. 

Section 4.05. CONSENTS AND APPROVALS. Except as shall have been satisfied on or prior to the Closing Date, no consent, waiver,
approval or authorization of, or filing with, any Person or Governmental Authority or under any applicable Law is required to be obtained by the 

  
 8 

 
Contributor in connection with the execution, delivery and performance of this Agreement, each other agreement, document and instrument contemplated hereby, the transactions contemplated hereby
or the other Formation Transactions, except for those consents, waivers, approvals, authorizations or filings, the failure of which to obtain or to file would not have a Material Adverse Effect. 

Section 4.06. NO VIOLATION. None of the execution, delivery or performance of this Agreement or any agreement contemplated hereby
between the parties to this Agreement or the consummation of the transactions contemplated hereby or thereby (including the other Formation Transactions) does or will, with or without the giving of notice, lapse of time, or both, violate, conflict
with, result in a breach of, or constitute a default under or give to others any right of termination, acceleration, cancelation or other right under, (a) the organizational documents of the Contributor (b) any agreement, document or
instrument to which the Contributor is a party or by which the Contributor is bound or (c) any term or provision of any judgment, order, writ, injunction or decree binding on the Contributor (or its assets or properties), except, in the case of
(b) and (c), any such breaches or defaults that would not have a Material Adverse Effect. 
 Section 4.07. NON-FOREIGN
PERSON. The Contributor is a United States person (as defined in the Code) and is, therefore, not subject to the provisions of the Code relating to the withholding of sales or exchange proceeds to foreign persons. 

Section 4.08. TAXES. To the Contributor’s knowledge, and except as would not have a Material Adverse Effect, (a) all Tax
Returns and reports required to be filed with respect to the Properties and all other assets owned by CyrusOne LLC immediately prior to the transactions contemplated by this agreement (collectively, the “CyrusOne LLC Assets”) have
been timely filed (after giving effect to any filing extension properly granted by a Governmental Authority having authority to do so) and all such returns and reports are accurate and complete in all material respects, (b) all Taxes required
to be paid with respect to the CyrusOne LLC Assets have been paid and (c) no deficiencies for any Taxes have been proposed, asserted or assessed with respect to the CyrusOne LLC Assets, and no requests for waivers of the time to assess any such
Taxes are pending. 
 Section 4.09. SOLVENCY. The Contributor has been and will be solvent at all times prior to and for
the 90-day period following the transfer of the Ownership Interests to the Operating Partnership. 
 Section 4.10.
LITIGATION. There is no action, suit or proceeding pending or, to the Contributor’s knowledge, threatened against the Contributor which, if adversely determined, would reasonably be expected to impair the ability of the Contributor to execute
or deliver, or perform its obligations under, this Agreement and each other agreement, document and instrument executed by it pursuant to this Agreement or to consummate the transactions contemplated hereby or thereby or the other Formation
Transactions. 
 Section 4.11. COMPLIANCE WITH LAWS. In connection with the operation of CyrusOne LLC , except as set forth
on Schedule 4.10, to the Contributor’s knowledge, the Properties have been maintained, and the Contributor has not received written notice that any such Property is not, in compliance in all material respects with all applicable laws,
ordinances, 

  
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rules, regulations, codes, orders and statutes (including, without limitation, those currently relating to fire safety, conservation, parking, Americans with Disabilities Act, zoning and building
laws) whether federal, state or local, except where the failure to so comply would not have a Material Adverse Effect. Compliance with Environmental Laws is not addressed by this Section 4.11, but rather solely by Section 4.14. 

Section 4.12. EMINENT DOMAIN. There is no existing or, to the Contributor’s knowledge, proposed or threatened condemnation,
eminent domain or similar proceeding, or private purchase in lieu of such a proceeding, in respect of all or any material portion of the Properties. 
 Section 4.13. LICENSES AND PERMITS. Except as set forth on Schedule 4.13, to the Contributor’s knowledge, all licenses, permits or other governmental approvals (including certificates of
occupancy) required to be obtained by the owner of any Property in connection with the construction, use, occupancy, management, leasing and operation of such Properties have been obtained and are in full force and effect and in good standing,
except for those licenses, permits and other governmental approvals, the failure of which to obtain or maintain in good standing would not have a Material Adverse Effect. 
 Section 4.14. ENVIRONMENTAL COMPLIANCE. Except as set forth on Schedule 4.14, to the Contributor’s knowledge, CyrusOne LLC and its Subsidiaries are currently in compliance with all
Environmental Laws and Environmental Permits, except where the failure to so comply would not have a Material Adverse Effect. The Contributor has not received any written notice from the United States Environmental Protection Agency or any other
federal, state, county or municipal entity or agency that regulates Hazardous Materials or public health risks or other environmental matters or any other private party or Person claiming any current violation of, or requiring current compliance
with, any Environmental Laws or Environmental Permits or demanding payment or contribution for any Release or other environmental damage in, on, under, or upon any of the Properties. No litigation in which the Contributor, CyrusOne LLC or any
Subsidiary of CyrusOne LLC is a named party is pending with respect to Hazardous Materials located in, on, under or upon any of the Properties, and, to such Contributor’s knowledge, no investigation in such respect is pending and no such
litigation or investigation has been threatened in writing in the last twelve months by any Governmental Entity or any third party. To the Contributor’s knowledge, except as set forth on Schedule 4.14, there are no environmental
conditions existing at, on, under, upon or affecting the Properties any portion thereof that would reasonably be likely to result in any claim, liability or obligation under any Environmental Laws or Environmental Permit or any claim by any third
party that would have a Material Adverse Effect. 
 Section 4.15. CUSTOMER LEASES. To the Contributor’s knowledge,
except as set forth on Schedule 4.15, (i) all leases, licenses, subleases, tenancies, possession agreements and occupancy agreements with tenants, subtenants or licensees related to the Properties (the “Customer Leases”)
are in full force and effect, (ii) no monetary or material non-monetary default (beyond applicable notice and cure periods) by any party exists under any such Customer Lease and (iii) no tenant under any of such Customer Leases is
presently the subject of any voluntary or involuntary bankruptcy or insolvency proceedings, except in each case as would not reasonably be expected to have a Material Adverse Effect. 

  
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 Section 4.16. TANGIBLE PERSONAL PROPERTY. To the Contributor’s knowledge, except
as set forth on Schedule 4.16, or as would not have a Material Adverse Effect, each of CyrusOne LLC and its Subsidiaries’ interests in any fixtures or personal property that are reflected on the financial statements of such entity as
owned by such entity, are owned free and clear of all Liens other than Permitted Liens. 
 Section 4.17. ZONING. Except as
set forth on Schedule 4.17, the Contributor has not received (i) any written notice (which remains uncured) from any Governmental Authority stating that any of the Properties is currently violating any zoning, land use or other similar
rules or ordinances in any material respect, or (ii) any written notice of any pending or threatened proceedings for the rezoning (i.e., as opposed to the current zoning) of any of the Properties or any portion thereof except, in each case as
would not have a Material Adverse Effect. 
 Section 4.18. INVESTMENT. The Contributor acknowledges that the offering and
issuance of the OP Units to be acquired pursuant to this Agreement are intended to be exempt from registration under the Securities Act and that the Operating Partnership’s reliance on such exemptions is predicated in part on the accuracy and
completeness of the representations and warranties of the Contributor contained herein. In furtherance thereof, the Contributor represents and warrants to the Operating Partnership as follows: 

(a) The Contributor is an “accredited investor” (as such term is defined in Rule 501(a) of Regulation D
promulgated under the Securities Act). 
 (b) The Contributor is acquiring the OP Units solely for its own
account for the purpose of investment and not as a nominee or agent for any other Person and not with a view to, or for offer or sale in connection with, any distribution of any thereof in violation of the securities Law. 

(c) The Contributor is knowledgeable, sophisticated and experienced in business and financial matters; the Contributor has
previously invested in securities similar to the OP Units and fully understands the limitations on transfer imposed by the federal securities Law. The Contributor is able to bear the economic risk of holding the OP Units for an indefinite period and
is able to afford the complete loss of its investment in the OP Units; the Contributor has received and reviewed all information and documents about or pertaining to the Operating Partnership and the business and prospects of the Operating
Partnership and the issuance of the OP Units as the Contributor deems necessary or desirable, and has been given the opportunity to obtain any additional information or documents and to ask questions and receive answers about such information and
documents, the Operating Partnership and the business and prospects of the Operating Partnership which the Contributor deems necessary or desirable to evaluate the merits and risks related to its investment in the OP Units; and the Contributor
understands and has taken cognizance of all risk factors related to the purchase of the OP Units. The Contributor is relying upon its own independent analysis and assessment (including with respect to taxes), and the advice of the Contributor’s
advisors (including tax advisors), and not upon that of the Operating Partnership or any of the Operating Partnership’s Affiliates, for purposes of evaluating, entering into, and consummating the transactions contemplated hereby. 

  
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 (d) The Contributor acknowledges that the OP Units have not been registered
under the Securities Act and, therefore, may not be sold unless registered under the Securities Act or an exemption from registration is available. 
 Section 4.19. NO OTHER REPRESENTATIONS OR WARRANTIES. Other than the representations and warranties expressly set forth in this Article IV, the Contributor shall not be deemed to have made any other
representation or warranty in connection with this Agreement or the transactions contemplated hereby. 
 ARTICLE V

 INDEMNIFICATION 
 Section 5.01. GENERAL INDEMNIFICATION. From and after the Closing Date, each party hereto (each of which is an “Indemnifying Party”) shall indemnify and hold harmless the other party
and its Affiliates (each of which is an “Indemnified Party”) from and against any and all charges, complaints, claims, actions, causes of action, losses, damages, liabilities and expenses of any nature whatsoever, including amounts
paid in settlement, reasonable attorneys’ fees, costs of investigation, costs of investigative judicial or administrative proceedings or appeals therefrom and costs of attachment or similar bonds (collectively, “Losses”)
arising out of or relating to, asserted against, imposed upon or incurred by the Indemnified Party in connection with or as a result of any breach of a representation, warranty or covenant of the Indemnifying Party contained in this Agreement or in
any schedule, exhibit, certificate or affidavit or any other agreement, document or instrument delivered by the Indemnifying Party pursuant to this Agreement; provided, however, that: (i) the Operating Partnership shall not have
any obligation under this Article to indemnify any Indemnified Party against any Losses to the extent that such Losses arise by virtue of (A) any diminution in value of the OP Units, (B) the Contributor’s breach of this Agreement,
gross negligence, wilful misconduct or fraud or (C) CyrusOne LLC’s operation of its business or the ownership and operation of its assets outside of the ordinary course of business prior to the Closing Date; and (ii) the Contributor
shall not have any obligation under this Article to indemnify any Indemnified Party against any Losses to the extent that such Losses arise by virtue of (A) any diminution in value of the Properties, (B) the Operating Partnership’s
breach of this Agreement, gross negligence, wilful misconduct or fraud or (C) the Operating Partnership’s operation of its business or the ownership and operation of its assets outside of the ordinary course of business prior to the
Closing Date; and 
 Section 5.02. NOTICE OF CLAIMS. At the time when any Indemnified Party learns of any potential claim
that is subject to indemnification pursuant to the terms of this Agreement (a “Claim”) against the Indemnifying Party it will promptly give written notice (a “Claim Notice”) to the Indemnifying Party;
provided that failure to do so shall not prevent recovery under this Agreement, except to the extent that the Indemnifying Party shall have been materially prejudiced by such failure. Each Claim Notice shall describe in reasonable detail the
facts known to such Indemnified Party giving rise to such Claim, and the amount or good faith estimate of the amount of Losses arising therefrom. Unless prohibited by Law, such Indemnified Party shall deliver to the Indemnifying Party, promptly
after such Indemnified Party’s receipt thereof, copies of all notices and documents (including court papers) received by such Indemnified Party relating to claims asserted by third parties (“Third Party Claims”). Any

  
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Indemnified Party may at its option demand indemnity under this Article V as soon as a Claim has been threatened by a third party, regardless of whether an actual Loss has been suffered, so long
as such Indemnified Party shall in good faith determine that such claim is not frivolous and that such Indemnified Party may be liable for, or otherwise incur, a Loss as a result thereof. 

Section 5.03. THIRD PARTY CLAIMS. The Indemnifying Party shall be entitled, at its own expense, to assume and control the defense of
any Claims based on Third Party Claims, through counsel chosen by the Indemnifying Party and reasonably acceptable to such Indemnified Party (or any person authorized by such Indemnified Party to act on its behalf), if it gives written notice of its
intention to do so to such Indemnified Party within 30 days of the receipt of the applicable Claim Notice; provided, however, that such Indemnified Party may at all times participate in such defense at its expense. Without limiting the
foregoing, in the event that the Indemnifying Party exercises the right to undertake any such defense against a Third Party Claim, such Indemnified Party shall cooperate with the Indemnifying Party in such defense and make available to the
Indemnifying Party (unless prohibited by Law), at the Indemnifying Party’s expense, all witnesses, pertinent records, materials and information in such Indemnified Party’s possession or under such Indemnified Party’s control relating
thereto as is reasonably required by the Indemnifying Party. No compromise or settlement of such Third Party Claim may be effected by either such Indemnified Party, on the one hand, or the Indemnifying Party, on the other hand, without the
other’s consent (which consent shall not be unreasonably withheld, conditioned or delayed) unless (i) there is no finding or admission of any violation of Law and no effect on any other claims that may be made against such other party and
(ii) each Indemnified Party that is party to such claim is released from all liability with respect to such claim. 

Section 5.04. EXPIRATION. 
 (a) Subject to the limitations set forth in this Agreement, all representations, warranties, covenants and agreements (including those relating to indemnification in Section 5.01) made herein shall
survive the Closing. 
 (b) Unless otherwise specified in this Agreement, all representations, warranties and
covenants of the Indemnifying Party contained in this Agreement shall survive until twelve months after the Closing Date (the “Expiration Date”). If written notice of a claim in accordance with the provisions of this Article V has
been given prior to the Expiration Date, then the relevant representation, warranty and covenant shall survive, but only with respect to such specific claim, until such claim has been finally resolved. Any claim for indemnification not so asserted
in writing by the Expiration Date may not thereafter be asserted and shall forever be waived. 
 Section 5.05. LIMITATIONS
ON AMOUNTS. 
 (a) Except as provided in subparagraph (b) below, the Contributor shall not have any
liability under Section 5.01 for any Losses hereunder (i) unless and until the aggregate total amount of all such Losses for which the Contributor would, but for this provision, be liable exceeds, on a cumulative basis, one percent
(1%) of the aggregate fair market value as of the Closing Date of the OP Units issued to the Contributor on the 

  
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Closing Date (the “OP Value”), and then only to the extent of such excess, (ii) in excess of, on a cumulative basis, ten percent (10%) of the fair market value as of
the Closing Date of the OP Units issued to the Contributor in respect of any Property, to the extent such Losses are directly related to or arise out of such Property and (iii) in excess of, on a cumulative basis, ten percent (10%) of the
OP Value. 
 (b) The limitations in subparagraph (a) above shall not apply to any Losses resulting from
breach of Section 4.04 with respect to a specific Property unless and until such time as the Operating Partnership (or a Subsidiary of the Operating Partnership) obtains an endorsement providing the Operating Partnership with the benefit of the
existing title insurance policy held by CBI or one of its Subsidiaries with respect to such Property, if any, or a new title insurance policy for the benefit of the Operating Partnership (or a Subsidiary of the Operating Partnership) in the same
amount as the lenders’ title insurance policy required to be obtained under the CyrusOne Credit Agreement. 

Section 5.06. EXCLUSIVE REMEDY. In furtherance of the foregoing, the Indemnified Party hereby waives, as of the Closing, to the
fullest extent permitted under applicable Law, any and all rights, claims and causes of action (other than claims of, or causes of action arising from, fraud) it may have against the Indemnifying Party arising under or based upon any federal, state,
local or foreign Law, other than the right to seek indemnity pursuant to this Article V. The foregoing sentence shall not limit the Indemnified Party’s right to specific performance or injunctive relief in connection with the breach by the
Indemnifying Party of the provisions of this Agreement. 
 Section 5.07. TAX TREATMENT. All indemnity payments made
hereunder shall be treated as adjustments to the consideration paid hereunder for United States federal income tax purposes. 

ARTICLE VI 

COVENANTS AND OTHER AGREEMENTS 
 Section 6.01. COVENANTS OF THE CONTRIBUTOR. From the date hereof through the Closing, except as otherwise provided for or as contemplated by this Agreement or the other agreements, documents and
instruments contemplated hereby, the Contributor shall not: 
 (a) sell, transfer or otherwise dispose of all or
any portion of the Ownership Interests; 
 (b) mortgage, pledge, hypothecate, encumber (or permit to become
encumbered) all or any portion of the Ownership Interests; 
 (c) amend the LLC Agreement; or 

(d) adopt a plan of liquidation, dissolution, merger, consolidation, restructuring, recapitalization or reorganization
with respect to CyrusOne LLC. 

  
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 Section 6.02. COMMERCIALLY REASONABLE EFFORTS BY THE OPERATING PARTNERSHIP AND THE
CONTRIBUTOR. Each of the Operating Partnership and the Contributor shall use commercially reasonable efforts and cooperate with each other in (a) promptly determining whether any filings are required to be made or consents, approvals, waivers,
permits or authorizations are required to be obtained (under any applicable Law or regulation or from any Governmental Authority or third party) in connection with the transactions contemplated by this Agreement and the other Formation Transactions
and (b) promptly making any such filings, in furnishing information required in connection therewith and in timely seeking to obtain any such consents, approvals, waivers, permits or authorizations. 

Section 6.03. TAX AGREEMENT. The Operating Partnership shall account for any variation between the tax basis of any Contributed
Asset and its fair market value at the time of its contribution to the Operating Partnership under any method approved under Section 704(c) of the Code and the applicable regulations as chosen by the general partner of the Operating
Partnership. 
 ARTICLE VII 
 WAIVERS AND CONSENTS 
 Effective upon the Closing of the contribution of
Ownership Interests and the exchange of OP Units pursuant to Article I herein, the Contributor waives and relinquishes all rights and benefits otherwise afforded to the Contributor under any agreement, including any rights of appraisal or rights of
first offer or first refusal, and any and all notice provisions related thereto. 
 ARTICLE VIII 

GENERAL PROVISIONS 
 Section 8.01. NOTICES. All notices and other communications under this Agreement shall be in writing and shall be deemed given (a) when delivered personally, (b) five Business Days after
being mailed by certified mail, return receipt requested and postage prepaid, (c) one Business Day after being sent by a nationally recognized overnight courier or (d) when transmitted by facsimile or electronic mail if confirmed within 24
hours thereafter by a signed original sent in the manner provided in clause (a), (b) or (c) to the parties at the following addresses (or at such other address for a party as shall be specified by notice from such party): 

if to the Operating Partnership to: 
 c/o CyrusOne Inc. 
 1649 West Frankford Road 

Carrollton, Texas 75007 
 Facsimile: 713-965-0106 
 Email: customerservice@cyrusone.com 

Attention: General Counsel 

  
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 if to the Contributor, to: 

c/o Cincinnati Bell Inc. 
 221 East Fourth Street 
 Cincinnati, Ohio 45202 

Facsimile: 513-721-7358 
 Email: christopher.wilson@cinbell.com 
 Attention: General Counsel 

Section 8.02. DEFINITIONS. For purposes of this Agreement, the following terms shall have the following meanings. 

(a) “Affiliate” means, with respect to any Person, a Person that, directly or indirectly, through one or
more intermediaries, controls, is controlled by, or is under common control with the specified Person. For the purposes of this definition, “control” (including, with correlative meanings, the terms “controlled by” and
“under common control with”) as used with respect to any Person, shall mean the possession, directly or indirectly, of the power to direct or cause the direction of the management or policies of such Person, whether through the ownership
of voting securities, by agreement or otherwise. 
 (b) “Business Day” means any day that is not
a Saturday, Sunday or legal holiday in the State of New York. 
 (c) “CBI” means Cincinnati Bell
Inc., an Ohio corporation. 
 (d) “Code” means the Internal Revenue Code of 1986, as amended,
together with the rules and regulations promulgated or issued thereunder. 
 (e) “CyrusOne Credit
Agreement” means the credit agreement by and among the Operating Partnership, as borrower, Deutsche Bank, as administrative agent, certain subsidiaries of the REIT as guarantors, and the financial institutions party thereto as lenders, to
be entered into prior to or on the Closing Date. 
 (f) “Environmental Law” means Laws or Orders
of any Governmental Authority relating to pollution or protection of the environment or natural resources (including the generation, use, storage, management, treatment, transportation, disposal, presence, Release or threatened Release of any
Hazardous Material) or occupational health and safety, such as the Clean Air Act, 42 U.S.C. Section 7401 et seq.; the Clean Water Act, 33 U.S.C. Section 1251 et seq. and the Water Quality Act of 1987; the Federal Insecticide,
Fungicide, and Rodenticide Act, 7 U.S.C. Section 136 et seq.; the Marine Protection, Research and Sanctuaries Act, 33 U.S.C. Section 1401 et seq.; the National Environmental Policy Act, 42 U.S.C. Section 4321 et
seq.; the Noise Control Act, 42 U.S.C. Section 4901 et seq.; the Occupational Safety and Health Act, 29 U.S.C. Section 651 et seq.; the Resource Conservation and Recovery Act, 42 U.S.C. Section 6901 et seq.,
as amended by the Hazardous and Solid Waste Amendments of 1984; the Safe Drinking Water Act, 42 U.S.C. Section 300f et seq.; the Comprehensive 

  
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Environmental Response, Compensation, and Liability Act (“CERCLA”), 42 U.S.C. Section 9601 et seq., as amended by the Superfund Amendments and Reauthorization Act,
the Emergency Planning and Community Right-to- Know Act, and Radon Gas and Indoor Air Quality Research Act; the Toxic Substances Control Act, 15 U.S.C. Section 2601 et seq.; the Atomic Energy Act, 42 U.S.C. Section 2011 et
seq., and the Nuclear Waste Policy act of 1982, 42 U.S.C. Section 10101 et seq. 
 (g)
“Environmental Permits” means any and all licenses, certificates, permits, directives, requirements, registrations, government approvals, agreements, authorizations, and consents that are required under or are issued pursuant to any
Environmental Laws. 
 (h) “Governmental Authority” means any government or agency, bureau,
board, commission, court, department, official, political subdivision, tribunal or other instrumentality of any government, whether federal, state or local, domestic or foreign. 

(i) “Hazardous Material” means any material, substance or waste defined or regulated in relevant form,
quantity or concentration as hazardous or toxic or as a pollutant or contaminant (or words of similar import) pursuant to any Environmental Law, including any petroleum, waste oil or petroleum constituents or by-products. 

(j) “Law” means laws, statutes, rules, regulations, codes, orders, ordinances, judgments, injunctions,
decrees and policies of any Governmental Authority. 
 (k) “Liens” means all pledges, claims,
liens, charges, restrictions, controls, easements, rights of way, exceptions, reservations, leases, licenses, grants, covenants and conditions, encumbrances and security interests of any kind or nature whatsoever. 

(l) “LLC Agreement” means the limited liability company agreement of CyrusOne LLC (including all
amendments and restatements thereof). 
 (m) “Material Adverse Effect” means a material adverse
effect on the business, financial condition, properties or results of operations of the REIT and its Subsidiaries, taken as a whole. 
 (n) “Operating Partnership Agreement” means the Amended and Restated Agreement of Limited Partnership of the Operating Partnership dated as of November 20, 2012. 

(o) “Order” means any order, writ, judgment, injunction, decree, ruling, assessment, stipulation,
determination or award entered by or with any court or other Governmental Authority or arbitrator. 
 (p)
“Permitted Lien” means: 
 (i) Liens securing Taxes, the payment of which is not delinquent or
the payment of which is actively being contested in good faith by appropriate proceedings diligently pursued; 

  
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 (ii) zoning laws and ordinances applicable to the Properties that are not
violated by the existing structures or present uses thereof or the transfer of the Properties; 
 (iii) Liens
imposed by laws, such as carriers’, warehousemen’s and mechanics’ liens, and other similar liens arising in the ordinary course of business that secure payment of obligations arising in the ordinary course of business not more than 60
days past due or which are being contested in good faith by appropriate proceedings diligently pursued; 
 (iv)
non-exclusive easements for public utilities and other operational purposes that do not materially interfere with the current use of the Properties; and 
 (i) any other liens that do not materially interfere with the current use or operation of the Properties. 
 (q) “Person” means an individual, corporation, partnership, limited liability company, joint venture, association, trust, unincorporated organization or other entity. 

(r) “REIT Common Stock” means the common stock, par value $0.01 per share, of the REIT. 

(s) “Release” means any release, spill, emission, leaking, dumping, injection, pouring, pumping, placing,
discarding, abandoning, deposit, disposal, discharge, dispersal, leaching or migration into or through the environment (including ambient air, surface water, groundwater, land surface or subsurface strata). 

(t) “Securities Act” means the Securities Act of 1933, as amended, and the rules and regulations
promulgated thereunder. 
 (u) “Subsidiary” of any Person means any corporation, partnership,
limited liability company, joint venture, trust or other legal entity of which such Person owns (either directly or through or together with another Subsidiary of such Person) either (i) a general partner, managing member or other similar
interest or (ii) (A) 10% or more of the voting power of the voting capital stock or other equity interests or (B) 10% or more of the outstanding voting capital stock or other voting equity interests of such corporation, partnership,
limited liability company, joint venture, trust or other legal entity. 
 (v) “Tax” means all
federal, state, local and foreign income, property, withholding, sales, franchise, employment, excise and other taxes, tariffs or governmental charges of any nature whatsoever, including estimated taxes, together with penalties, interest or
additions to Tax with respect thereto. 
 (w) “Tax Return” means any return, declaration,
report, claim for refund, or information return or statement related to Taxes, including any schedule or attachment thereto, and including any amendment thereof. 

  
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 Section 8.03. COUNTERPARTS. This Agreement may be executed in counterparts, all of
which shall be considered one and the same agreement and shall become effective when one or more counterparts have been signed by each party and delivered to each other party. 
 Section 8.04. ENTIRE AGREEMENT; THIRD-PARTY BENEFICIARIES. This Agreement, including the exhibits and schedules hereto constitute the entire agreement and supersede each prior agreement and
understanding, whether written or oral, among the parties regarding the subject matter of this Agreement. This Agreement is not intended to confer any rights or remedies on any Person other than the parties hereto. 

Section 8.05. GOVERNING LAW. This Agreement shall be governed by, and construed in accordance with, the Law of the State of New
York, regardless of any Law that might otherwise govern under applicable principles of conflicts of laws thereof. 

Section 8.06. ASSIGNMENT. This Agreement shall be binding upon, and shall be enforceable by and inure to the benefit of, the parties
hereto and their respective heirs, legal representatives, successors and assigns; provided, however, that this Agreement may not be assigned (except by operation of Law) by any party without the prior written consent of the other
party, and any attempted assignment without such consent shall be null and void and of no force and effect, except that each of the Operating Partnership and the Contributor may assign its rights and obligations hereunder to an Affiliate.

 Section 8.07. JURISDICTION. Each of the parties hereto irrevocably and unconditionally submits to the exclusive
jurisdiction of (a) any New York State court sitting in the County of New York and (b) the United States District Court for the Southern District of New York, for the purposes of any action, suit or proceeding arising out of this Agreement
or any transaction contemplated hereby (and each agrees that no such action, suit or proceeding relating to this Agreement shall be brought by it or any of its Affiliates except in such courts). Each of the parties hereto further agrees that, to the
fullest extent permitted by applicable Law, service of any process, summons, notice or document by U.S. registered mail to such person’s respective address set forth in Section 8.01 shall be effective service of process for any action,
suit or proceeding in New York with respect to any matters to which it has submitted to jurisdiction as set forth above in the immediately preceding sentence. Nothing in this Agreement will affect the right of any party to this Agreement to serve
process in any other manner permitted by applicable Law. Each of the parties hereto irrevocably and unconditionally waives (and agrees not to plead or claim) any objection to the laying of venue of any action, suit or proceeding arising out of this
Agreement or the transactions contemplated hereby in (i) any New York State court sitting in the County of New York or (ii) the United States District Court for the Southern District of New York, or that any such action, suit or proceeding
brought in any such court has been brought in an inconvenient forum. 
 Section 8.08. SEVERABILITY. Each provision of this
Agreement will be interpreted so as to be effective and valid under applicable Law, but if any provision is held invalid, illegal or unenforceable under applicable Law in any jurisdiction, then such invalidity, illegality or unenforceability will
not affect any other provision, and this Agreement will be reformed, construed and enforced in such jurisdiction as if such invalid, illegal or unenforceable provision had never been included herein. 

  
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 Section 8.09. RULES OF CONSTRUCTION. 

(a) The parties hereto agree that they have been represented by counsel during the negotiation, preparation and execution
of this Agreement and, therefore, waive the application of any Law, regulation, holding or rule of construction providing that ambiguities in an agreement or other document will be construed against the party drafting such agreement or document.

 (b) The words “hereof,” “herein” and “herewith” and words of similar import
shall, unless otherwise stated, be construed to refer to this Agreement as a whole and not to any particular provision of this Agreement, and article, section, paragraph, exhibit and schedule references are to the articles, sections, paragraphs,
exhibits and schedules of this Agreement unless otherwise specified. Whenever the words “include,” “includes” or “including” are used in this Agreement, they shall be deemed to be followed by the words “without
limitation.” All terms defined in this Agreement shall have the defined meanings contained herein when used in agreement, document or instrument made or delivered pursuant hereto unless otherwise defined therein. The definitions contained in
this Agreement are applicable to the singular as well as the plural forms of such terms and to the masculine as well as to the feminine and neuter genders of such terms. Unless explicitly stated otherwise herein, any agreement, document, instrument
or statute defined or referred to herein or in any agreement, document or instrument that is referred to herein means such agreement, document, instrument or statute as from time to time, amended, qualified or supplemented, including (in the case of
agreements, documents and instruments) by waiver or consent and (in the case of statutes) by succession of comparable successor statutes and all attachments thereto and instruments incorporated therein. References to a Person are also to its
permitted successors and assigns. 
 Section 8.10. EQUITABLE REMEDIES. The parties agree that irreparable damage would
occur in the event that any of the provisions of this Agreement were not performed in accordance with their specific terms or were otherwise breached. It is accordingly agreed that each party shall be entitled to an injunction or injunctions to
prevent breaches of this Agreement by the other party hereto and to enforce specifically the terms and provisions hereof in any federal or state court located in New York, this being in addition to any other remedy to which the parties are entitled
under this Agreement or otherwise at law or in equity. 
 Section 8.11. DESCRIPTIVE HEADINGS. The descriptive headings
herein are inserted for convenience only and are not intended to be part of or to affect the meaning or interpretation of this Agreement. 
 Section 8.12. NO PERSONAL LIABILITY CONFERRED. This Agreement shall not create or permit any personal liability or obligation on the part of any officer, director, partner, employee or shareholder of
the Operating Partnership or the Contributor. 
 Section 8.13. AMENDMENT; WAIVER. Any amendment hereto shall be in writing
and signed by all parties hereto. No waiver of any of the provisions of this Agreement shall be valid unless in writing and signed by the party against whom enforcement is sought. 

  
 20 

 IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be signed by their
respective duly authorized officers or representatives, all as of the date first written above. 
  

			
	CYRUSONE LP
		
	By:	 	CyrusOne GP
		 	Sole General Partner
		
	By:	 	CyrusOne Inc.
		 	Sole Trustee of CyrusOne GP
		
	By:	 	 /s/ Kimberly H. Sheehy

	Name:	 	Kimberly H. Sheehy
	Title:	 	Chief Financial Officer and Administrative Officer
	
	 CONTRIBUTOR
  

DATA CENTER INVESTMENTS INC.

		
	By:	 	 /s/ Christopher J. Wilson

	Name:	 	Christopher J. Wilson
	Title:	 	Vice President, General Counsel and Secretary

 EXHIBITS 
 Exhibit A:  Properties 
 Exhibit
B:  Formation Transactions 
 Exhibit C:  Operating Partnership Subsidiaries

 Exhibit D:  Operating Partnership Agreement 

 EXHIBIT A 
 PROPERTIES 
 Owned Real Property 

 

					
	 Common Name and Address
	  	 City
	  	 State & Zip Code

	Mason – 4800 Parkway Drive	  	Mason	  	Ohio 45040
	Goldcoast – 11500 Goldcoast Drive	  	Cincinnati	  	Ohio 45249
	Lebanon – 401 Kingsview Drive	  	Lebanon	  	Ohio 45036
	7th Street – 229 West Seventh Street	  	Cincinnati	  	Ohio 45202

 Leased Real Property 
  

									
	 Common Name and Address
	 	 City
	 	 State & Zip

Code
	 	 Landlord/Owner
	 	 Name of Lease

	7th Street Data Center – 209 West Seventh Street	 	Cincinnati	 	Ohio 45202	 	Cincinnati Bell Telephone Company LLC	 	Data Center and Office Lease Agreement dated 10/29/2012 between Cincinnati Bell Telephone Company LLC and CyrusOne Inc.
	Blue Ash Data Center – 10150 Alliance Road	 	Blue Ash	 	Ohio 45242	 	Catholic Healthcare Partners	 	Sublease Agreement dated 1/1/2009 between Catholic Healthcare Partners and Mercy Health Partners of Southwest Ohio and Cincinnati Bell Technology Solutions Inc.
	Hamilton Data Center – 101 Knightsbridge Drive	 	Hamilton	 	Ohio 45011	 	Vora Technology Park LLC	 	Commercial Lease dated 11/1/2006 between Vora Technology Park LLC and Cincinnati Bell Technology Solutions Inc.
	Florence Data Center – 7200 Industrial Road	 	Florence	 	Kentucky 41042	 	Duke Energy Kentucky, Inc.	 	Lease dated September 9, 2004 between Duke Energy Kentucky, Inc. and Cincinnati Bell Technology Solutions Inc.
	Singapore Data Center – 29A International Business Park	 	Jurong East	 	Singapore	 	Digital Singapore Jurong East PTE. LTD.	 	Deed of Turn Key Datacenter Lease dated 8/3/2011 between Digital Singapore Jurong East PTE. LTD. and CBTS UK Limited
	London, UK Data Center – Kestral Way	 	Woking	 	Surrey	 	Sentrum IV Limited	 	Lease dated 10/7/2011 Sentrum IV Limited and CBTS UK Limited Inc.

 EXHIBIT B-1 
 FORMATION TRANSACTIONS 
  

	 	1.	Data Centers South Inc. (“Data Centers South”) is formed as a Delaware corporation. 

 

	 	2.	Data Center Investments Inc. (“Data Center Investments”) is formed as a Delaware corporation. 

 

	 	3.	Data Centers South Holdings LLC (“DCS Holdco”) is formed as a Delaware limited liability company. 

 

	 	4.	Data Center Investments Holdco LLC (“DCI Holdco”) is formed as a Delaware limited liability company. 

 

	 	5.	GramTel Inc., a Virginia corporation, merges with and into CyrusOne Inc., a Delaware corporation (“CyrusOne Inc.”), with CyrusOne Inc. surviving.

  

	 	6.	Cincinnati Bell Technology Solutions Inc., a Delaware corporation (“CBTS”), transfers its long haul fiber network assets and data center asset and
assigns its interests in leases associated with its data center business to CyrusOne Inc. in exchange for the constructive issuance of CyrusOne Inc. shares and CyrusOne Inc.’s assumption of liabilities related to such assets and leases.

  

	 	7.	Cincinnati Bell Telephone Company LLC, an Ohio limited liability company (“CBT”), sells its data center building located at 229 West Seventh Street to
CyrusOne Inc. for $18 million payable in the form of a promissory note from CyrusOne Inc. to CBT. 

  

	 	8.	CBTS contributes the stock of CyrusOne Inc. to Data Center Investments in exchange for the stock of Data Center Investments. 

 

	 	9.	CyrusOne Inc. converts to CyrusOne LLC, a limited liability company (“CyrusOne LLC”), pursuant to Delaware law. 

 

	 	10.	CyrusOne LLC transfers its high-basis assets to Data Centers South in exchange for the transfer of Data Centers South stock to CyrusOne LLC and the assumption of
certain liabilities of CyrusOne LLC (including a portion of the intercompany debt owed by CyrusOne LLC to CBTS and all of the intercompany debt owed by CyrusOne LLC to Cincinnati Bell Inc., an Ohio corporation (“CBI”)).

  

	 	11.	Data Center Investments assumes remaining portion of intercompany debt owed by CyrusOne LLC to CBTS. 

 

	 	12.	CyrusOne LLC distributes the stock of Data Centers South to Data Center Investments. 

	 	13.	Data Center Investments transfers interests in CyrusOne LLC to CyrusOne LP, a Maryland limited partnership (“CyrusOne LP”), in exchange for CyrusOne LP
limited partnership interests. 

  

	 	14.	Data Centers South transfers its high-basis assets to CyrusOne LP in exchange for CyrusOne LP limited partnership interests and CyrusOne LP’s assumption of Data
Center Investment’s liabilities. 

  

	 	15.	CyrusOne LP transfers its high-basis assets to CyrusOne LLC. 

  

	 	16.	Data Center Investments transfers its limited partnership interests in CyrusOne LP to DCI Holdco. 

 

	 	17.	Data Centers South transfers its limited partnership interests in CyrusOne LP to DCS Holdco. 

 

	 	18.	CBI, CBTS, CBT, CyrusOne LLC and CyrusOne LP enter into intercompany agreements. 

 EXHIBIT B-2 
 FORMATION TRANSACTIONS 
  

	 	1.	Data Centers South Inc. (“Data Centers South”) is formed as a Delaware corporation. 

 

	 	2.	Data Center Investments Inc. (“Data Center Investments”) is formed as a Delaware corporation. 

 

	 	3.	Data Centers South Holdings LLC (“DCS Holdco”) is formed as a Delaware limited liability company. 

 

	 	4.	Data Center Investments Holdco LLC (“DCI Holdco”) is formed as a Delaware limited liability company. 

 

	 	5.	GramTel Inc., a Virginia corporation, merges with and into CyrusOne Inc., a Delaware corporation (“CyrusOne Inc.”), with CyrusOne Inc. surviving.

  

	 	6.	Cincinnati Bell Technology Solutions Inc., a Delaware corporation (“CBTS”), transfers its long haul fiber network assets and data center asset and
assigns its interests in leases associated with its data center business to CyrusOne Inc. in exchange for the constructive issuance of CyrusOne Inc. shares and CyrusOne Inc.’s assumption of liabilities related to such assets and leases.

  

	 	7.	Cincinnati Bell Telephone Company LLC, an Ohio limited liability company (“CBT”), sells its data center building located at 229 West Seventh Street to
CyrusOne Inc. for $18 million payable in the form of a promissory note from CyrusOne Inc. to CBT. 

  

	 	8.	CBTS contributes the stock of CyrusOne Inc. to Data Center Investments in exchange for the stock of Data Center Investments. 

 

	 	9.	CyrusOne Inc. converts to CyrusOne LLC, a limited liability company (“CyrusOne LLC”), pursuant to Delaware law. 

 

	 	10.	CyrusOne LLC transfers its high-basis assets to Data Centers South in exchange for the transfer of Data Centers South stock to CyrusOne LLC and the assumption of
certain liabilities of CyrusOne LLC (including a portion of the intercompany debt owed by CyrusOne LLC to CBTS and all of the intercompany debt owed by CyrusOne LLC to Cincinnati Bell Inc., an Ohio corporation (“CBI”)).

  

	 	11.	Data Center Investments assumes remaining portion of intercompany debt owed by CyrusOne LLC to CBTS. 

 

	 	12.	CyrusOne LLC distributes the stock of Data Centers South to Data Center Investments. 

	 	13.	Data Centers South transfers its high-basis assets to CyrusOne LP, a Maryland limited partnership (“CyrusOne LP”), in exchange for CyrusOne LP limited
partnership interests and CyrusOne LP’s assumption of Data Center Investment’s liabilities. 

 EXHIBIT C 
 OPERATING PARTNERSHIP SUBSIDIARIES 
  

	 	1.	CyrusOne Finance Corp. – 100% 

 EXHIBIT D 
 OPERATING PARTNERSHIP AGREEMENT 

 Schedule 3.03 

Consents and Approvals 
 None 

 Schedule 4.04(a) 

Ownership of the Properties – owned real property 
 None 

 Schedule 4.04(b) 

Ownership of the Properties – leased real property 
 None 

 Schedule 4.11 

Compliance with Laws 
 None 

 Schedule 4.13 

Licenses and Permits 
 None 

 Schedule 4.14 

Environmental Compliance 
 None 

 Schedule 4.15 

Material Customer Leases 
 None 

 Schedule 4.16 

Tangible Personal Property 
 None 

 Schedule 4.17 

Zoning 

NoneEX-10.18

 Exhibit 10.18 
 EXECUTION COPY 
 EMPLOYMENT AGREEMENT 

This EMPLOYMENT AGREEMENT (the “Agreement”) is made as of January 24, 2013 (the “Effective Date”)
by and between VENKATESH S. DURVASULA (“Employee”) and CYRUS ONE LLC, a Delaware limited liability company (“Employer”). 
 WHEREAS, CyrusOne, Inc. a Maryland corporation (“CyrusOne”), pursuant to the Form S-11 registration statement filed August 8, 2012 with the Securities and Exchange Commission
(the “SEC”) and amended from time to time, has consummated an initial public offering (the “IPO”) of its common stock as of January 24, 2013; 

NOW, THEREFORE, in consideration of the above and the promises and mutual obligations of the parties contained herein, and for
other valuable consideration, the receipt and sufficiency of which are hereby acknowledged, Employer and Employee agree as follows: 
 1. Employment. By this Agreement, Employer and Employee set forth the terms of Employer’s employment of Employee on and after the Effective Date. 

2. Term of Agreement. The term of this Agreement initially shall be the one year period commencing on the Effective Date;
provided, however, that on the first anniversary of the Effective Date and on each subsequent anniversary of the Effective Date, the term of this Agreement automatically shall be extended for a period of one additional year, unless
earlier terminated in accordance with Section 13 (the “Term”). Notwithstanding anything in this Agreement to the contrary, Sections 7, 8, 9, 10, 11 and 12 shall survive any termination of the Term, this Agreement and
Employee’s termination of employment hereunder. 
 3. Duties. (a) Title/Reporting. Employee shall serve
as Chief Commercial Officer of CyrusOne, or in such other equivalent capacity as may be designated by the Chief Executive Officer of CyrusOne. Employee shall initially report to the Chief Executive Officer of CyrusOne. 

(b) Affiliates. Employee shall furnish such managerial, executive, financial, technical and other skills, advice,
and assistance in operating the CyrusOne Group as may be reasonably requested of him. As of the Effective Date, the “CyrusOne Group” means the Employer, CyrusOne LP, CyrusOne and their respective subsidiaries. For the avoidance of
doubt, the term CyrusOne Group shall not include Cincinnati Bell Inc. or any subsidiaries of Cincinnati Bell Inc. that are not subsidiaries of CyrusOne. 
 (c) Duties. Employee shall perform such duties, consistent with the provisions of Section 3(a), as are reasonably assigned to Employee, including, without limitation, service as an officer for
other entities in the CyrusOne Group. 
 (d) Full Working Time. Employee shall devote Employee’s
entire time, attention and energies to the business of the CyrusOne Group. The words “entire time, attention and energies” are intended to mean that Employee shall devote 

  
 1 

 
Employee’s full effort during reasonable working hours to the business of CyrusOne Group and shall devote at least 40 hours per week to the business of the CyrusOne Group. Employee shall
travel to such places as are necessary in the performance of Employee’s duties. 
 4. Compensation.  

(a) Base Salary. Employee shall receive an annual base salary (the “Base Salary”) of $300,000.00
per year, payable in accordance with Employer’s regular payroll practices as then in effect, for each year during the Term, subject to proration for any partial year. Such Base Salary, and all other amounts payable under this Agreement, shall
be subject to withholding as required by law. 
 (b) Annual Bonus. In addition to the Base Salary, during
the Term, Employee shall be eligible to receive an annual bonus (the “Bonus”) for each calendar year for which services are performed under this Agreement. Any Bonus for a calendar year shall be payable after the conclusion of the
calendar year in accordance with Employer’s regular bonus payment policies, but in no event paid later than March 15th following the end of the applicable calendar year. Each year, Employee shall be given a Bonus target of not less than
75% of his then current Base Salary, subject to proration for a partial year. The actual Bonus target shall be established from time to time by the compensation committee (the “Compensation Committee”) of CyrusOne’s board of
directors (the “Board”) if Employee is a named executive officer for purposes of CyrusOne’s annual proxy statement or is otherwise an executive officer whose compensation is determined by the Compensation Committee, or, if
Employee is not so subject, then in accordance with the provisions of CyrusOne’s then existing annual incentive plan or any similar plan made available to employees of the CyrusOne Group (the “annual incentive plan”) in which
Employee participates. Any Bonus award to Employee shall further be subject to the terms and conditions of any such applicable annual incentive plan, and, to the extent any Bonus award to Employee is intended to be “qualified performance-based
compensation” under Section 162(m) of the Internal Revenue Code of 1986, as amended (the “Code”), the performance goals applicable to the Bonus award shall be based on one or more of the performance criteria set forth in
the applicable section of a shareholder-approved annual incentive plan. 
 (c) Long-Term Incentive Awards.
In each year during the Term, Employee shall be eligible to be considered for grants of awards under any of Employer’s long-term incentive compensation plans maintained by CyrusOne for the benefit of CyrusOne Group employees. 

(d) Compensation Review. On at least an annual basis during the Term, the Base Salary and Bonus target shall be
reviewed and subject to adjustment at the discretion of the Chief Executive Officer, or if Employee is a named executive officer of CyrusOne, then by the Board. 
 5. Expenses. All reasonable and necessary expenses incurred by Employee in the course of the performance of Employee’s duties to the CyrusOne Group shall be

  
 2 

 
reimbursable in accordance with Employer’s then current travel and expense policies. 
 6. Benefits.  
 (a) While Employee remains in the employ of
Employer, Employee shall be eligible to participate in all of the various employee benefit plans and programs which are made available to similarly situated officers of CyrusOne, in accordance with the eligibility provisions and other terms and
conditions of such plans and programs. 
 (b) Notwithstanding anything contained herein to the contrary, the Base
Salary and any Bonuses otherwise payable to Employee shall be reduced by any benefits paid to Employee by Employer under any disability plans made available to Employee by the CyrusOne Group (the “Disability Plans”). 

(c) In addition, Employee shall be eligible to receive those benefits set forth on Schedule 1 hereto, payable in
accordance with Employer’s regular payment policies with respect to such benefits. 
 7. Confidentiality. The
CyrusOne Group is engaged in, among other things, investing in and operating data centers throughout the United States and internationally. Employee acknowledges that in the course of employment with the Employer, Employee shall be entrusted with or
obtain access to information (all of which information is referred to hereinafter collectively as the “Information”) proprietary to members of the CyrusOne Group, that Employee did not have or have access to prior to signing this
Agreement, including, without limitation, the following: the organization and management of each member of the CyrusOne Group; the names, addresses, buying habits and other special information regarding past, present and potential customers,
employees and suppliers of the CyrusOne Group; customer and supplier contracts and transactions or price lists of the CyrusOne Group and its suppliers; products, services, programs and processes sold, licensed or developed by the CyrusOne Group;
technical data, plans and specifications, and present and/or future development projects of the CyrusOne Group; financial and/or marketing data respecting the conduct of the present or future phases of business of the CyrusOne Group; computer
programs, systems and/or software; ideas, inventions, trademarks, trade secrets, business information, know-how, processes, improvements, designs, redesigns, discoveries and developments of the CyrusOne Group; and other information considered
confidential by any of the CyrusOne Group or customers or suppliers of the CyrusOne Group. Employee may also be entrusted with and have access to Third Party Information. The term “Third Party Information” means confidential or
trade secret information that the CyrusOne Group may receive from third parties or information which is subject to a duty on the CyrusOne Group members’ parts to maintain the confidentiality of such Third Party Information and to use it only
for limited purposes. At all times during the Term and thereafter, Employee agrees to retain the Information and Third Party Information in absolute confidence and not to disclose the Information and Third Party Information to any person or
organization except as required in the performance of Employee’s duties for the CyrusOne Group, without the express written consent of Employer; provided that Employee’s obligation of confidentiality shall not extend to any
Information which 

  
 3 

 
becomes generally available to the public other than as a result of disclosure by Employee. 
 8. New Developments. All ideas, inventions, discoveries, concepts, trade secrets, trademarks, service marks or other developments or improvements, whether patentable or not, conceived by Employee,
alone or with others, at any time during the Term, whether or not during working hours or on the premises of the CyrusOne Group, which are within the scope of or related to the business operations of any member of the CyrusOne Group (the
“New Developments”), shall be and remain the exclusive property of such member of the CyrusOne Group. Employee agrees that any New Developments which, within one year after the cessation of employment with Employer, are made,
disclosed, reduced to a tangible or written form or description or are reduced to practice by Employee and which are based upon, utilize or incorporate Information shall, as between Employee and the CyrusOne Group, be presumed to have been made
during Employee’s employment by Employer. Employee further agrees that Employee shall not, during the Term, improperly use or disclose any proprietary information or trade secrets of any former employer or other person or entity and that
Employee shall not bring onto the premises of the CyrusOne Group any unpublished document or proprietary information belonging to any such employer, person or entity unless consented to in writing by such employer, person or entity. 

At all times during the Term and thereafter, Employee shall do all things reasonably necessary to ensure ownership of such New
Developments by the applicable member of the CyrusOne Group, including the execution of documents assigning and transferring to such member of the CyrusOne Group all of Employee’s rights, title and interest in and to such New Developments and
the execution of all documents required to enable such member of the CyrusOne Group to file and obtain patents, trademarks, service marks and copyrights in the United States and foreign countries on any of such New Developments. 

9. Surrender of Material upon Termination. Employee hereby agrees that upon cessation of Employee’s employment, for whatever
reason and whether voluntary or involuntary, or upon the request of Employer at any time, Employee shall immediately surrender to Employer all of the property and other things of value in his possession or in the possession of any person or entity
under Employee’s control that are the property of any member of the CyrusOne Group, including without any limitation all personal notes, drawings, manuals, documents, photographs or the like, including copies and derivatives thereof, and
e-mails and other electronic and digital information of all types regardless of where or the type of device on which such materials may be stored by Employee, relating directly or indirectly to any Information, materials or New Developments, or
relating directly or indirectly to the business of any member of the CyrusOne Group, or, with the permission of Employer, shall destroy such copies of such materials. 
 10. Remedies. (a) Employer and Employee hereby acknowledge and agree that the services rendered by Employee to the CyrusOne Group, the information disclosed to Employee during and by virtue of
Employee’s employment and Employee’s commitments and obligations to any member of the CyrusOne Group herein are of a 

  
 4 

 
special, unique and extraordinary character, and that the breach of any provision of this Agreement by Employee shall cause the CyrusOne Group irreparable injury and damage, and consequently the
Employer shall be entitled to, in addition to all other remedies available to it, injunctive and equitable relief to prevent a breach of Sections 7, 8, 9, 11 and 12 of this Agreement and to secure the enforcement of this Agreement. 

(b) Except as provided in Section 10(a), the parties hereto agree to submit to final and binding arbitration
any dispute, claim or controversy, whether for breach of this Agreement or for violation of any of Employee’s statutorily created or protected rights, arising between the parties that either party would have been otherwise entitled to file or
pursue in court or before any administrative agency (herein, a “claim”), and each party waives all right to sue the other party. To the extent Employee may have a non-waivable right to file or participate in a claim or charge,
Employee agrees that to the maximum extent permitted by law he shall not obtain and waives any right or entitlement to obtain relief or damages (whether legal, monetary, equitable, or other) from such non-waivable claim or change. 

(i) This agreement to arbitrate and any resulting arbitration award are enforceable under and subject to the Federal
Arbitration Act, 9 U.S.C. § 1 et seq. (“FAA”). If the FAA is held not to apply for any reason, then the laws of the State of Texas concerning the enforceability of arbitration agreements and awards (without regard
to its conflicts of laws principles) shall govern this Agreement and the arbitration award. 
 (ii) (A) All
of a party’s claims must be presented at a single arbitration hearing. Any claim not raised at the arbitration hearing is waived and released. The arbitration hearing shall take place in Dallas, Texas. 

(B) The arbitration process shall be governed by the Employment Dispute Resolution Rules of the American Arbitration
Association (“AAA”) except to the extent they are modified by this Agreement. In the event that any provisions of this Section 10 are determined by AAA to be unenforceable or impermissibly contrary to AAA rules, then this
Section 10 shall be modified as necessary to comply with AAA requirements. 
 (C) Employee has had an
opportunity to review the AAA rules and the requirements that Employee must pay a filing fee, which Employer has agreed to split on an equal basis. 
 (D) The arbitrator shall be selected from a panel of arbitrators chosen by the AAA. After the filing of a Request for Arbitration, the AAA shall send simultaneously to Employer and Employee an identical
list of names of five persons chosen from the panel. Each party shall have 10 days from the transmittal date in which to strike up to two names, number the remaining names in order of preference and return the list to the AAA. 

  
 5 

 (E) Any pre-hearing disputes shall be presented to the arbitrator for
expeditious, final and binding resolution. 
 (F) The award of the arbitrator shall be in writing and shall set
forth each issue considered and the arbitrator’s finding of fact and conclusions of law as to each such issue. 
 (G) The remedy and relief that may be granted by the arbitrator to Employee are limited to lost wages, benefits, cease and desist and affirmative relief, compensatory, liquidated and punitive damages and
reasonable attorney’s fees, and shall not include reinstatement or promotion. If the arbitrator would have awarded reinstatement or promotion, but for the prohibition in this Agreement, the arbitrator may award reasonable front pay. The
arbitrator may assess to either party, or split, the arbitrator’s fee and expenses and the cost of the transcript, if any, in accordance with the arbitrator’s determination of the merits of each party’s position, but each party shall
bear any cost for its witnesses and proof. 
 (H) Employer and Employee recognize that a primary benefit each
derives from arbitration is avoiding the delay and costs normally associated with litigation. Therefore, neither party shall be entitled to conduct any discovery prior to the arbitration hearing except that: (1) Employer shall furnish Employee
with copies of all non-privileged documents in Employee’s personnel file; (2) if the claim is for discharge, Employee shall furnish Employer with records of earnings and benefits relating to Employee’s subsequent employment (including
self-employment) and all documents relating to Employee’s efforts to obtain subsequent employment; (3) the parties shall exchange copies of all documents they intend to introduce as evidence at the arbitration hearing at least 10 days
prior to such hearing; (4) Employee shall be allowed (at Employee’s expense) to take the depositions, for a period not to exceed four hours each, of two representatives of Employer, and Employer shall be allowed (at its expense) to depose
Employee for a period not to exceed four hours; and (5) Employer or Employee may ask the arbitrator to grant additional discovery to the extent permitted by AAA rules upon a showing that such discovery is necessary. 

(I) Nothing herein shall prevent either party from taking the deposition of any witness where the sole purpose for taking
the deposition is to use the deposition in lieu of the witness testifying at the hearing and the witness is, in good faith, unavailable to testify in person at the hearing due to poor health, residency and employment more than 50 miles from the
hearing site, conflicting travel plans or other comparable reason. 
 (J) Arbitration must be requested in
writing no later than six months from the date of the party’s knowledge of the matter disputed by the claim. A party’s failure to initiate arbitration within the time limits herein shall be considered a waiver and release by that party
with respect to any claim subject to arbitration under this Agreement. 

  
 6 

 (K) Employer and Employee consent that judgment upon the arbitration award
may be entered in any Federal or state court that has jurisdiction. 
 (L) Except as provided in
Section 10(a), neither party shall commence or pursue any litigation on any claim that is or was subject to arbitration under this Agreement. 
 (M) All aspects of any arbitration procedure under this Agreement, including the hearing and the record of the proceedings, are confidential and shall not be open to the public, except to the extent the
parties agree otherwise in writing, or as may be appropriate in any subsequent proceedings between the parties, or as may otherwise be appropriate in response to a governmental agency or legal process or as may be required to be disclosed by the
CyrusOne Group pursuant to applicable law, rule or regulation to which the CyrusOne Group is subject, including requirements of the Securities and Exchange Commission and any stock exchanges on which CyrusOne’s securities are listed.

 11. Covenant Not to Compete; No Interference; No Solicitation. (a) Employee acknowledges that (a) the
business of the CyrusOne Group in which Employee shall be principally engaged is investing in and operating data centers throughout the United States and internationally; (b) the CyrusOne Group’s business is national and international in
scope; (c) Employee’s work for Employer shall give Employee access to the confidential affairs and proprietary information of the CyrusOne Group and to “trade secrets” (as defined under the laws of the State of Texas) of the
CyrusOne Group; (d) the covenants and agreements of Employee contained in this Section 11 are essential to protect the legitimate business and goodwill of the CyrusOne Group; (e) the covenants in this Section 11 do not impose an
undue hardship on Employee and shall not prevent Employee from engaging in gainful employment: and (f) Employer would not have entered into this Agreement but for the covenants and agreements set forth in this Section 11. Therefore,
ancillary to the otherwise enforceable agreements set forth in this Agreement, and to avoid the actual or threatened misappropriation of the Information or goodwill, Employee agrees to the restrictive covenants set forth in this Agreement. At all
times during the Term and during the one year period following cessation of Employee’s employment with Employer for any reason (the “Restricted Period”), Employee agrees that Employee will not accept employment or engage or
participate in any business activity (whether as a principal, partner, joint venturer, agent, employee, salesperson, consultant, independent contractor, director, officer or otherwise) with a “Competitor” of the CyrusOne Group that would
involve Employee: 
 (i) providing, selling or attempting to sell, or assisting in the sale or attempted sale of,
any services or products competitive with or similar to those services or products with which Employee had any involvement, and/or regarding which Employee had any Information, during Employee’s employment with Employer (including any products
or services being researched or developed by the CyrusOne Group during Employee’s employment with Employer); or 

  
 7 

 (ii) providing or performing services that are similar to any services that
Employee provided to or performed for the CyrusOne Group during Employee’s employment with Employer. 
 For purposes of
this provision, a “Competitor” is any business or entity that, at any time during the one year period following Employee’s termination or separation, provides or seeks to provide, any products or services similar or related to
any products sold or any services provided by the CyrusOne Group. “Competitor” includes, without limitation, any company or business that provides data colocation services to businesses or entities. The restrictions set forth in this
paragraph will be limited to the geographic areas (1) where Employee performed services for the CyrusOne Group, (2) where Employee solicited or served the CyrusOne Group’s customers or clients, and/or (3) otherwise impacted or
influenced by Employee’s provision of services to the CyrusOne Group. Notwithstanding the foregoing, Employee may invest in securities of any entity, solely for investment purposes and without participating in the business thereof, if
(A) such securities are traded on any national securities exchange or the National Association of Securities Dealers Automatic Quotation System or equivalent non-U.S. securities exchange, (B) Employee is not a controlling person of, or a
member of a group which controls, such entity and (C) Employee does not, directly or indirectly, own one percent (1%) or more of any class of securities of such entity. 

(b) During the Restricted Period, Employee shall not either directly or indirectly, solicit business from or interfere
with or adversely affect, or attempt to interfere with or adversely affect, the CyrusOne Group’s relationships with any person, firm, association, corporation or other entity which was known by Employee during his employment with Employer to
be, or is included on any listing to which Employee had access during the course of employment as, a customer, client, supplier, consultant or employee of the CyrusOne Group and Employee shall not divert or change, or attempt to divert or change,
any such relationship to the detriment of the CyrusOne Group or to the benefit of any other person, firm, association, corporation or other entity. 
 (c) During the Restricted Period, Employee shall not, (x) without the prior written consent of Employer, accept employment, as an employee, consultant or otherwise, with any company or entity which
is a supplier of the CyrusOne Group at any time during the final year of Employee’s employment with Employer or (y) induce or seek to induce any other employee of the CyrusOne Group to terminate his or her employment relationship with the
CyrusOne Group. 
 (d) Employee iterates that the covenants, restrictions, agreements and obligations set forth
herein are founded upon valuable consideration and, with respect to the covenants, restrictions, agreements and obligations set forth in this Section 11, are reasonable in duration and geographic scope. The time period and geographical area set
forth in this Section 11 are each divisible and separable, and, in the event that the covenants not to compete and/or not to divert business or employees contained therein are judicially held invalid or unenforceable as to such time period
and/or geographical area, they shall be valid and enforceable in such geographical area(s) and for such time period(s) which the court determines to be reasonable and enforceable. Employee 

  
 8 

 
agrees that in the event that any court of competent jurisdiction determines that the above covenants are invalid or unenforceable, Employee shall join with Employer in requesting such court to
construe the applicable provision by limiting or reducing it so as to be enforceable to the extent compatible with the then applicable law. After such determination has become final and unappealable, the duration or scope of such provision, as the
case may be, shall be reduced so that such provision becomes enforceable and, in its reduced form, such provision shall then be enforceable and shall be enforced. Furthermore, it is agreed that any period of restriction or covenant hereinabove
stated shall not include any period of violation or period of time required for litigation or arbitration to enforce such restrictions or covenants. If any of the provisions in this Section 11 conflict with similar provisions in any other
document or agreement related to Employee’s employment with Employer, the provisions of this Agreement will apply; provided, however, if the restrictions set forth in the other document or agreement at issue are broader in scope
that those in this Agreement and are enforceable under applicable law, those restrictions will apply. 
 12. Goodwill. In
the course of employment with Employer, Employee will be entrusted with, have access to and obtain goodwill belonging to the CyrusOne Group. Employee agrees not to use the goodwill for the benefit of any person or entity other than the CyrusOne
Group. During the Term and thereafter, Employee shall not disparage any member of the CyrusOne Group in any way which could adversely affect the goodwill, reputation and business relationships of the CyrusOne Group with the public generally, or with
any of their customers, suppliers or employees. Employee understands and agrees that the CyrusOne Group shall be entitled to make any such public disclosures as are required by applicable law, rule or regulation regarding Employee, including
termination of Employee’s employment with Employer, and that any public disclosures so made by the CyrusOne Group and other statements materially consistent with such public disclosures shall not be restricted in any manner by this
Section 12. 
 13. Termination. (a) Termination for Terminating Disability. (i) Employer or
Employee may terminate the Term upon Employee’s failure or inability to perform the services required hereunder, because of any physical or mental infirmity for which Employee receives disability benefits under any Disability Plans, over a
period of one hundred twenty (120) consecutive working days during any twelve (12) consecutive month period (a “Terminating Disability”). 

(ii) If Employer or Employee elects to terminate the Term in the event of a Terminating Disability, such termination shall
be effective immediately upon the giving of written notice by the terminating party to the other party. 
 (iii)
Upon termination of the Term on account of a Terminating Disability, Employer shall pay Employee Employee’s accrued compensation hereunder, whether Base Salary, Bonus or otherwise (subject to offset for any amounts received pursuant to the
Disability Plans), to the date of termination. In the event of a Terminating Disability, Employer also shall provide Employee with disability benefits and all other benefits according to the provisions of the applicable Disability Plans and any
other CyrusOne Group plans in which Employee is then participating. Furthermore, 

  
 9 

 
Employee shall continue to accrue service as an employee in accordance with the provisions of the applicable Disability Plans and pension plan(s). Upon termination of the Term on account of a
Terminating Disability, any outstanding equity or non-equity incentive awards shall be treated in accordance with the applicable provisions of the applicable incentive plan or related award agreements. 

(iv) If the parties elect not to terminate the Term upon an event of a Terminating Disability and Employee returns to
active employment with Employer prior to such a termination, or if such disability exists for less than one hundred twenty consecutive working days, the provisions of this Agreement shall remain in full force and effect. 

(b) Termination on Account of Death of Employee. The Term terminates immediately and automatically on the death of
Employee; provided, however, that Employee’s estate shall be paid Employee’s accrued compensation hereunder, whether Base Salary, Bonus or otherwise, to the date of death. Upon termination of the Term on account of the death
of Employee, any outstanding equity or non-equity incentive awards shall be treated in accordance with the applicable provisions of the applicable incentive plan or related award agreements. 

(c) Termination by Employer for Cause. Employer may terminate the Term immediately, upon written notice to
Employee, for Cause. For purposes of this Agreement, Employer shall have “Cause” to terminate the Term only if CyrusOne determines that there has been fraud, misappropriation, embezzlement or misconduct constituting serious criminal
activity on the part of Employee. Upon termination for Cause, Employee shall be entitled to receive only Employee’s accrued compensation hereunder, whether Base Salary, Bonus or otherwise, to the date of termination. 

(d) Termination by Employer Other than for Cause, Death or Disability or by Employee in a Constructive Termination.
Employer may terminate the Term immediately upon written notice to Employee for any reason and Employee may terminate the Term immediately upon written notice to Employer for any reason as provided in Section 13(f). In the event Employer
terminates the Term for any reason other than those set forth in Sections 13(a), (b), (c) and (e), or in the event Employee terminates the Term, upon written notice to Employer, as a result of a Constructive Termination (as herein defined),
other than within one year after a Change in Control (as provided in Section 13(e): 
 (i) on the date which
is sixty (60) days after Employee’s termination of employment with Employer, subject to Employer’s receipt of Employee’s executed and irrevocable release as provided in Section 13(g), Employer shall pay Employee in a lump
sum cash payment an amount equal to 2.0 times the sum of (A) Employee’s annual Base Salary rate in effect at the time of the termination of this Agreement and (B) the annual Bonus target, prorated to the date of termination;

 (ii) for purposes of any outstanding stock option or other outstanding incentive award issued by the CyrusOne
Group to Employee, the portion of 

  
 10 

 
any such outstanding award that would otherwise have vested on or prior to the end of the Severance Period (as herein defined) shall become vested and exercisable as of immediately before the
termination of the Term (and Employee shall be afforded the opportunity to exercise them until the earlier of (1) the latest date, determined in accordance with the terms of such stock options or awards, that applies because such stock options
or awards become vested and exercisable immediately before the termination of the Term or (2) the end of the Severance Period) and the restrictions applicable to the portion of any restricted stock award issued by the CyrusOne Group to Employee
that would otherwise have lapsed on or prior to the end of the Severance Period shall lapse as of immediately before the termination of the Term; 
 (iii) if applicable, an amount equal to the sum of (a) any forfeitable benefits of Employee under any nonqualified (i.e., not qualified under Code Section 401(a)) pension, profit sharing,
savings or deferred compensation plan of any member of the CyrusOne Group which would have vested prior to the end of the Severance Period if the Term had not terminated, plus (b) any additional vested benefits which would have accrued for
Employee under any nonqualified defined benefit pension plan if the Term had not terminated prior to the end of the Severance Period and if Employee’s annual Base Salary and annual Bonus target had neither increased nor decreased after such
termination, shall be payable by Employer at the same time and in the same manner as such benefits would have been paid under such plan or plans had such benefits become vested and accrued under such plan or plans at the time of the termination of
the Term; 
 (iv) if applicable, an amount equal to the sum of (A) any forfeitable benefits of Employee
under any qualified (i.e., qualified under Code Section 401(a)) pension, profit sharing, 401(k) or deferred compensation plan of any member of the CyrusOne Group which would have vested prior to the end of the Severance Period if the
Term had not terminated, plus (B) any additional vested benefits which would have accrued for Employee under any qualified defined benefit pension plan if the Term had not terminated prior to the end of the Severance Period and if
Employee’s annual Base Salary and annual Bonus target had neither increased nor decreased after such termination, shall be paid by Employer from its general assets (and not under such plan or plans) in one lump sum on the date which is sixty
(60) days after Employee’s termination of employment with Employer, subject to Employer’s receipt of Employee’s executed and irrevocable release as provided in Section 13(g); and 

(v) for the remainder of the Severance Period, Employer shall continue to provide Employee with medical, dental, vision
and group term life coverage comparable to the medical, dental, vision and group term life coverage in effect for Employee immediately prior to the termination of the Term (with the cost of such benefits shared between Employee and Employer on a
basis comparable to the cost-sharing of such benefits immediately prior to the termination of the Term), provided, however, that, with respect to benefits covered by the Consolidated Omnibus Budget Reconciliation Act of 1985, as
amended (“COBRA”), the Employer may instead elect to pay or reimburse Employee’s COBRA payments for continued health and dental coverage. To the extent that Employee would have been eligible for any post-retirement

  
 11 

 
medical, dental, vision or group term life benefits from Employer if Employee had continued in employment through the end of the Severance Period, Employer shall provide such post-retirement
benefits to Employee after the end of the Severance Period. 
 (e) Terminations in Connection with a Change in
Control. The Term shall terminate automatically in the event and at the time that both there is a Change in Control and either (A) Employee elects to terminate his employment with Employer within one year after the Change in Control as a
result of Constructive Termination or (B) Employee’s employment with Employer is actually terminated by Employer within one year after the Change in Control for any reason other than those set forth in Sections 13(a), (b) and
(c). 
 (i) In the event of a termination of the Term under this Section 13(e): 

(A) on the date which is sixty (60) days after Employee’s termination of employment with Employer, subject to
Employer’s receipt of Employee’s executed and irrevocable release as provided in Section 13(g), Employer shall pay Employee in a lump sum cash payment an amount equal to the product obtained by multiplying (1) the sum of the
annual Base Salary rate in effect at the time of the termination of the Term and the annual Bonus target in effect at the time of such termination by (2) two; 

(B) all outstanding stock options and other incentive awards issued by the CyrusOne Group to Employee that are not vested
and exercisable at the time of the termination of the Term shall become immediately vested and exercisable (and Employee shall be afforded the opportunity to exercise them until the earlier of (1) the latest date, determined in accordance with
the terms of such stock options or awards, that would apply if such stock options or awards had become vested and exercisable immediately before the termination of the Term or (2) the end of the Severance Period) and the restrictions applicable
to all outstanding restricted stock issued by the CyrusOne Group to Employee shall lapse upon the termination of the Term; 
 (C) an amount equal to the sum of (1) any forfeitable benefits of Employee under any nonqualified (i.e., not qualified under Code Section 401(a)) pension, profit sharing, savings or
deferred compensation plan of any member of the CyrusOne Group which would have vested prior to the end of the Severance Period if the Term had not terminated, plus (2) any additional vested benefits which would have accrued for Employee under
any nonqualified defined benefit pension plan if the Term had not terminated prior to the end of the Severance Period and if Employee’s annual Base Salary and annual Bonus target had neither increased nor decreased after such termination, shall
be payable by Employer at the same time and in the same manner as such benefits would have been paid under such plan or plans had such benefits become vested and accrued under such plan or plans at the time of the termination of the Term;

 (D) an amount equal to the sum of (1) any forfeitable benefits of Employee under any qualified
(i.e., qualified under Code Section 401(a)) pension, 

  
 12 

 
profit sharing, 401(k) or deferred compensation plan of any member of the CyrusOne Group which would have vested prior to the end of the Severance Period if the Term had not terminated, plus
(2) any additional vested benefits which would have accrued for Employee under any qualified defined benefit pension plan if the Term had not terminated prior to the end of the Severance Period and if Employee’s annual Base Salary and
annual Bonus target had neither increased nor decreased after such termination, shall be paid by Employer from its general assets (and not under such plan or plans) in one lump sum on the date which is sixty (60) days after Employee’s
termination of employment with Employer, subject to Employer’s receipt of Employee’s executed and irrevocable release as provided in Section 13(g); 

(E) for the remainder of the Severance Period, Employer shall continue to provide Employee with medical, dental, vision
and group term life coverage comparable to the medical, dental, vision and group term life coverage in effect for Employee immediately prior to the termination of the Term (with the cost of such benefits shared between Employee and Employer on a
basis comparable to the cost-sharing of such benefits immediately prior to the termination of the Term), provided, however, that, with respect to benefits covered by COBRA, the Employer may instead elect to pay or reimburse
Employee’s COBRA payments for continued health and dental coverage. To the extent that Employee would have been eligible for any post-retirement medical, dental, vision or group term life benefits from Employer if Employee had continued in
employment through the end of the Severance Period, Employer shall provide such post-retirement benefits to Employee after the end of the Severance Period. 
 (ii) Notwithstanding any other provision in this Agreement, in the event that it is determined (by the reasonable computation of an independent nationally recognized certified public accounting firm that
shall be selected by Employer prior to the applicable Change in Control (the “Accountant”)) that the aggregate amount of the payments, distributions, benefits and entitlements of any type payable by Employer or any affiliate to or
for the benefit of Employee (including any payment, distribution, benefit or entitlement made by any person or entity effecting a Change in Control), in each case, that could be considered “parachute payments” within the meaning of
Section 280G of the Code (such payments, the “Parachute Payments”) that, but for this Section 13(e)(ii) would be payable to Employee, exceeds the greatest amount of Parachute Payments that could be paid to Employee without
giving rise to any liability for any excise tax imposed by Section 4999 of the Code (or any successor provision thereto) or any similar tax imposed by state or local law, or any interest or penalties with respect to such tax (such tax or taxes,
together with any such interest or penalties, collectively referred to as the “Excise Tax”), then the aggregate amount of Parachute Payments payable to Employee shall not exceed the amount which produces the greatest after-tax
benefit to Employee after taking into account any Excise Tax to be payable by Employee. For the avoidance of doubt, this provision shall reduce the amount of Parachute Payments otherwise payable to Employee, if doing so would place Employee in a
more favorable net after-tax economic position as compared with not reducing the amount of Parachute Payments (taking into account the Excise Tax payable in respect of such Parachute Payments). 

  
 13 

 (f) Voluntary Resignation by Employee (other than as a result of
Constructive Termination). Employee may resign upon 60 days’ prior written notice to Employer. In the event of a resignation under this Section 13(f), the Term shall terminate and Employee shall be entitled to receive Employee’s
Base Salary through the date of termination, any Bonus earned but not paid at the time of termination and any other vested compensation or benefits called for under any compensation plan or program of any member of the CyrusOne Group. 

(g) Section 13 Payments and Release. Upon termination of the Term as a result of an event of termination
described in this Section 13 and except for Employer’s payment of the required payments under this Section 13 (including any Base Salary accrued through the date of termination, any Bonus earned for the year preceding the year in
which the termination occurs and any nonforfeitable amounts payable under any employee plan), all further compensation under this Agreement shall terminate. Employee further agrees that as a condition precedent to Employee’s receipt of payments
under this Section 13 (other than any Base Salary accrued through the date of termination, any Bonus earned for the year preceding the year in which the termination occurs and all payments pursuant to Section 13(e), upon the request of
Employer and by a reasonable deadline set by Employer (to ensure that payments can be made by the dates specified in this Section 13 following the expiration of the time for revocation of such release as permitted by law), Employee shall
execute and not revoke a release of claims against the CyrusOne Group, which release shall contain customary and appropriate terms and conditions as determined in good faith by Employer. 

(h) Certain Surviving Rights. The termination of the Term shall not amend, alter or modify the rights and
obligations of the parties under Sections 7, 8, 9, 10, 11 and 12, the terms of which shall survive the termination of the Term. 
 (i) Additional Terms. To the extent provided below, the following provisions apply under this Section 13 and the other provisions of the Agreement. 

(i) Notwithstanding any other provision of this Agreement, for purposes of Sections 13(d) and 13(e), “Severance
Period” means the one year period beginning at the time of the termination of the Term. 
 (ii)
“Change in Control” has the meaning set forth in The CyrusOne 2012 Long Term Incentive Plan. 

(iii) Except as set forth in Section 14, below, for purposes of Section 13(d) and 13(e), “Constructive
Termination” shall be deemed to have occurred if, without Employee’s consent, (A) there is a material adverse change in Employee’s reporting responsibilities set forth in Section 3(a) or there is otherwise a material
reduction by the CyrusOne Group in Employee’s authority, reporting relationship or responsibilities, (B) there is a material reduction by the CyrusOne Group in Employee’s Base Salary or Bonus target, or (C) Employee is required
by Employer to relocate more than 50 miles from his designated office then in effect as of the Effective Date. 

  
 14 

 (iv) When an amount (referred to in this Section 13(i)(iv) as the
“principal sum”) that is payable under Section 13(d)(i), 13(d)(iv), 13(e)(i)(A) or 13(e)(i)(D) on the date which is sixty (60) days after Employee’s termination of employment with Employer is paid, such payment shall
also include an amount that is equal to the amount of interest that would have been earned by such principal sum for the period from the date of Employee’s termination of employment with Employer to the date which is sixty (60) days after
Employee’s termination of employment had such principal sum earned interest for such period at an annual rate of interest of 3.5%. 
 (v) To the extent that any of the benefits applicable to medical, dental and vision coverage provided to Employee under Section 13(d)(v) or 13(e)(i)(E) (referred to in this Section 13(i) as
“healthcare plan benefits”) are subject to Federal income taxation, the following conditions shall apply: 
 (A) the amount of healthcare plan benefits provided or paid during any tax year of Employee under Section 13(d)(v) or 13(e)(i)(E) shall not affect the amount of healthcare plan benefits that are
provided or eligible for payment in any other tax years of Employee (disregarding any limit on the amount of medical expenses, as defined in Code Section 213(d), that may be paid or reimbursed over some or all of the period in which such
coverage is in effect because of a lifetime, annual or similar limit on any covered person’s expenses that can be paid or reimbursed under Employer’s health care plans under which the terms of such coverage is determined); 

(B) the payment or reimbursement of an expense for healthcare plan benefits that is eligible for payment or reimbursement
shall not be made prior to the date immediately following the date which is sixty (60) days after Employee’s termination of employment with Employer and shall in any event be made no later than the last day of the tax year of Employee next
following the tax year of Employee in which the expense is incurred; and 
 (C) Employee’s right to
healthcare plan benefits shall not be subject to liquidation or exchange for any other benefit. 
 (vi) This
Agreement and the amounts payable and other benefits hereunder are intended to comply with, or otherwise be exempt from, Section 409A of the Code. This Agreement shall be administered, interpreted and construed in a manner consistent with
Section 409A. If any provision of this Agreement is found not to comply with, or otherwise not to be exempt from, the provisions of Section 409A, it shall be modified and given effect, in the sole discretion of the Board or Compensation
Committee thereof and without requiring Employee’s consent, in such manner as the Board or Compensation Committee determines to be necessary or appropriate to comply with, or to effectuate an exemption from, Section 409A. Each payment
under this Agreement shall be treated as a separate identified payment for purposes of Section 409A. The preceding provisions shall not be construed as a guarantee by Employer of any particular tax effect to Employee of the payments and other
benefits under this Agreement. 

  
 15 

 (A) With respect to any reimbursement of expenses of, or any provision of
in-kind benefits to, Employee, as specified under this Agreement, such reimbursement of expenses or provision of in-kind benefits shall be subject to the following conditions: (1) the expenses eligible for reimbursement or the amount of in-kind
benefits provided in one taxable year shall not affect the expenses eligible for reimbursement or the amount of in-kind benefits provided in any other taxable year, except for any medical reimbursement arrangement providing for the reimbursement of
expenses referred to in Section 105(b) of the Code; (2) the reimbursement of an eligible expense shall be made no later than the end of the year after the year in which such expense was incurred; and (3) the right to reimbursement or
in-kind benefits shall not be subject to liquidation or exchange for another benefit. 
 (B) If a payment
obligation under this Agreement arises on account of Employee’s termination of employment and if such payment is subject to Section 409A, the payment shall be paid only in connection with Employee’s “separation from service”
(as defined in Treas. Reg. Section 1.409A-1(h)). If a payment obligation under this Agreement arises on account of Employee’s “separation from service” (as defined under Treas. Reg. Section 1.409A-1(h)) while Employee is a
“specified employee” (as defined under Treas. Reg. Section 1.409A-1(h) and using the identification methodology selected by Employer from time to time), any payment of “deferred compensation” (as defined under Treasury
Regulation Section 1.409A-1(b)(1), after giving effect to the exemptions in Treasury Regulation Sections 1.409A-1(b)(3) through (b)(12)) that is scheduled to be paid within six months after such separation from service shall accrue without
interest and shall be paid on the first day of the seventh month beginning after the date of Employee’s separation from service or, if earlier, within 15 days after the appointment of the personal representative or executor of Employee’s
estate following his death. 
 14. Assignment. As this is an agreement for personal services involving a relation of
confidence and a trust between Employer and Employee, all rights and duties of Employee arising under this Agreement, and the Agreement itself, are non-assignable by Employee. Employee acknowledges that Employer may elect to assign this Agreement to
an affiliate. 
 15. Notices. Any notice required or permitted to be given under this Agreement shall be sufficient if in
writing and if delivered personally or by certified mail to Employee at Employee’s place of residence as then recorded on the books of Employer or to Employer at its principal office. 

16. Waiver. No waiver or modification of this Agreement or the terms contained herein shall be valid unless in writing and duly
executed by the party to be charged therewith. The waiver by any party hereto of a breach of any provision of this Agreement by the other party shall not operate or be construed as a waiver of any subsequent breach by such party. 

17. Governing Law; Venue. This Agreement shall be governed by the laws of the State of Texas and, to the extent applicable,
Federal law, and the parties agree to 

  
 16 

 
submit to the jurisdiction of the state and Federal courts sitting in Dallas, Texas counties for all disputes hereunder; provided that, arbitration of claims under Section 10(b)(ii) shall
take place in Dallas, Texas. 
 18. Entire Agreement. This Agreement contains the entire agreement of the parties with
respect to Employee’s employment by Employer. There are no other contracts, agreements or understandings, whether oral or written, existing between them except as contained or referred to in this Agreement. 

19. Severability. In case anyone or more of the provisions of this Agreement is held to be invalid, illegal or unenforceable in
any respect, such invalidity, illegality or other enforceability shall not affect any other provisions hereof, and this Agreement shall be construed as if such invalid, illegal or unenforceable provisions have never been contained herein.

 20. Successors and Assigns. Subject to the requirements of Section 14 above, this Agreement shall be binding upon
Employee, Employer and Employer’s successors and assigns. 
 21. Confidentiality of Agreement Terms. The terms of
this Agreement shall be held in strict confidence by Employee and shall not be disclosed by Employee to anyone other than Employee’s spouse, Employee’s legal counsel and Employee’s other advisors, unless required by law. Further,
except as provided in the preceding sentence, Employee shall not reveal the existence of this Agreement or discuss its terms with any person (including but not limited to any employee of the CyrusOne Group) without the express authorization of the
President of CyrusOne; provided that Employee shall advise any prospective new employer of the existence of Employee’s non-competition, confidentiality and similar obligations under this Agreement and Employer has the right to disclose
these same obligations to third-parties if it deems such disclosure necessary to protect its interests. To the extent that the terms of this Agreement have been disclosed by the CyrusOne Group, in a public filing or otherwise, the confidentiality
requirements of this Section 21 shall no longer apply to such terms. 
 22. Counterparts. This Agreement may be
executed in several counterparts, each of which shall be deemed an original, but all of which shall constitute one and the same instrument. Signatures delivered by facsimile or electronic means (including by “pdf”) shall be deemed
effective for all purposes. 

  
 17 

 IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be duly executed as of
the day and year first above written. 
  

							
	CYRUSONE LLC,
			
		 	by	 	
		 		 	 /s/ Gary J. Wojtaszek

		 		 	Name:	 	Gary J. Wojtaszek
		 		 	Title:	 	President and Chief Executive Officer
		
		 	Date: January 24, 2013
	
	EMPLOYEE,
			
		 	by	 	
		 		 	 /s/ Venkatesh S. Durvasula

		 		 	Name:	 	Venkatesh S. Durvasula
		 		 	Title:	 	Chief Commercial Officer
		
		 	Date: January 24, 2013

  
 18 

 SCHEDULE 1 
 (Section 6(c) Benefits) 
 Car allowance of $10,000/year 

  
 19

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