1、2020 Annual RUNITED STATESSECURITIES AND EXCHANGE COMMISSIONWashington,DC 20549FORM 10-KANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934For the fiscal year ended December 31,2020TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934
2、For the transition period _ to _ Commission File Number:001-35789CyrusOne 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(Addres
3、s 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 RegisteredCommon Stock,$.01 par valueCONEThe NASDAQ Global Select Market
4、1.450%Senior Notes due 2027CONE27The Nasdaq Stock Market LLCSecurities registered pursuant to Section 12(g)of the Act:None.Indicate by check mark if the registrant is a well-known seasoned issuer,as defined in Rule 405 of the Securities Act.Yes No Indicate by check mark if the registrant is not requ
5、ired to file reports pursuant to Section 13 or Section 15(d)of the Act.Yes No Indicate by check mark whether the registrant(1)has filed all reports required to be filed by Section 13 or 15(d)of the Securities Exchange Act of 1934 during the preceding 12 months(or for such shorter period that the reg
6、istrant was required to file such reports),and(2)has been subject to such filing requirements for the past 90 days.Yes No Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T(232.405 of