<SEC-DOCUMENT>0000950157-21-001180-index.html : 20211116
<SEC-HEADER>0000950157-21-001180.hdr.sgml : 20211116
<ACCEPTANCE-DATETIME>20211116164903
ACCESSION NUMBER:		0000950157-21-001180
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		5
FILED AS OF DATE:		20211116
DATE AS OF CHANGE:		20211116

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CyrusOne Inc.
		CENTRAL INDEX KEY:			0001553023
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35789
		FILM NUMBER:		211416806

	BUSINESS ADDRESS:	
		STREET 1:		2850 N HARWOOD ST
		STREET 2:		SUITE 2200
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75201
		BUSINESS PHONE:		(972) 350-0060

	MAIL ADDRESS:	
		STREET 1:		2850 N HARWOOD ST
		STREET 2:		SUITE 2200
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75201
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEFA14A
<SEQUENCE>1
<FILENAME>defa14a.htm
<DESCRIPTION>SCHEDULE 14A
<TEXT>
Document 1 - file: defa14a.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>image1.jpg
<TEXT>
Document 2 - file: image1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>image2.jpg
<TEXT>
Document 3 - file: image2.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>image3.jpg
<TEXT>
Document 4 - file: image3.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>image4.jpg
<TEXT>
Document 5 - file: image4.jpg

</DOCUMENT>
</SEC-DOCUMENT>