1、2019 Annual RUNITED STATESSECURITIES AND EXCHANGE COMMISSIONWashington,DC 20549FORM 10-K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)OF THE SECURITIES EXCHANGEACT OF 1934For the fiscal year ended December 31,2019 TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)OF THE SECURITIESEXCHANGE ACT OF 1934
2、For the transition period _ to _ Commission File Number:001-35789 CyrusOne Inc.(Exact name of registrant as specified in its charter)Maryland46-0691837(State or other jurisdiction ofincorporation or organization)(I.R.S.EmployerIdentification No.)2850 N.Harwood Street,Suite 2200,Dallas,TX 75201(Addre
3、ss of Principal Executive Offices)(Zip Code)(972)350-0060(Registrants telephone number,including area code)Securities registered pursuant to Section 12(b)of the Act:Title of Each ClassTrading SymbolName of Each Exchange on Which RegisteredCommonStock,$.01parvalueCONENASDAQSecurities registered pursu
4、ant to Section 12(g)of the Act:None.Indicatebycheckmarkiftheregistrantisawell-knownseasonedissuer,asdefinedinRule405oftheSecuritiesAct.YesNoIndicatebycheckmarkiftheregistrantisnotrequiredtofilereportspursuanttoSection13orSection15(d)oftheAct.YesNoIndicatebycheckmarkwhethertheregistrant(1)hasfiledall
5、reportsrequiredtobefiledbySection13or15(d)oftheSecuritiesExchangeActof1934duringthepreceding12months(orforsuchshorterperiodthattheregistrantwasrequiredtofilesuchreports),and(2)hasbeensubjecttosuchfilingrequirementsforthepast90days.YesNoIndicatebycheckmarkwhethertheregistranthassubmittedelectronicall
6、yeveryInteractiveDataFilerequiredtobesubmittedpursuanttoRule405ofRegulationS-T(232.405ofthischapter)duringthepreceding12months(orforsuchshorterperiodthattheregistrantwasrequiredtosubmitsuchfiles).YesNoIndicate by check mark whether the registrant is a large accelerated filer,an accelerated filer,a n