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( Mark One ) ☑ ☐ 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 1934 For the quarterly period ended March 31 , 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 : 1-9044 ( Duke Realty Corporation ) 0-20625 ( Duke Realty Limited Partnership ) . Duke REALTY DUKE REALTY CORPORATION DUKE REALTY LIMITED PARTNERSHIP ( Exact Name of Registrant as Specified in Its Charter ) Indiana ( Duke Realty Corporation ) Indiana ( Duke Realty Limited Partnership ) ( State or Other Jurisdiction of Incorporation or Organization ) 8711 River Crossing Boulevard Indianapolis , Indiana ( Address of Principal Executive Offices ) 35-1740409 ( Duke Realty Corporation ) 35-1898425 ( Duke Realty Limited Partnership ) ( I.R.S. Employer Identification Number ) 46240 ( Zip Code ) Registrant's Telephone Number , Including Area Code : ( 317 ) 808-6000 Securities registered pursuant to Section 12 ( b ) of the Act : Title of Class Duke Realty Corporation Common Stock , $ 0.01 par value Trading Symbol ( s ) DRE Name of Exchange on Which Registered 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 . Duke Realty Corporation Yes No □ Duke Realty Limited Partnership 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 ) . Duke Realty Corporation Yes 冈 No □ Duke Realty Limited Partnership 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 . Duke Realty Corporation : Large accelerated filer ☑ Accelerated filer Non - accelerated filer Smaller reporting company Emerging growth company Duke Realty Limited Partnership : Accelerated filer Large accelerated filer ☐ Non - accelerated filer ☑ Smaller reporting company Emerging growth company If an emerging growth company , indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13 ( a ) of the Exchange Act . Indicate by check mark whether the registrant is a shell company ( as defined in Rule 12b - 2 of the Exchange Act ) : Duke Realty Corporation Yes ☐ No ☑ Duke Realty Limited Partnership The number of shares of Duke Realty Corporation's common stock outstanding at April 28 , 2021 was 374,985,270 . Yes □ No ☑