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Table of Contents ( Mark One ) ☑ 1934 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON , D.C. 20549 FORM 10 - Q QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF For the quarterly period ended September 30 , 2021 OR TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF ☐ 1934 For the transition period from to Commission File Number : 001-36409 CITY OFFICE REIT , INC . ( Exact name of registrant as specified in its charter ) Maryland ( State or other jurisdiction of incorporation or organization ) 666 Burrard Street Suite 3210 Vancouver , BC V6C 2X8 ( Address of principal executive offices ) ( Zip Code ) 98-1141883 ( I.R.S. Employer Identification No. ) Registrant's telephone number , including area code : ( 604 ) 806-3366 Title of Each Class Common Stock , $ 0.01 par value Securities registered pursuant to Section 12 ( b ) of the Act : 6.625 % Series A Cumulative Redeemable Preferred Stock , $ 0.01 par value per share Trading Symbol ( s ) " CIO " " CIO.PRA " Name of each Exchange on Which Registered New York Stock Exchange New York Stock Exchange 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 registrant 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 this chapter ) during the preceding 12 months ( or for such shorter period that the registrant was required to submit such files ) . Yes No ☐ Indicate by check mark whether the registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , a smaller reporting company , or an emerging growth company . See the definitions of " large accelerated filer , " " accelerated filer , " " smaller reporting company , ” and “ emerging growth company " in Rule 12b - 2 of the Exchange Act . Large accelerated filer Non - accelerated filer ㅁㅁ Accelerated filer Smaller reporting company ☑ ☐