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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 FORM 10 - K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 OR TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 14817 Oak Lane ( Address of principal executive offices ) For the fiscal year ended December 31 , 2020 Commission File Number : 001-35039 Delaware ( State or other jurisdiction of incorporation or organization ) BankUnited , Inc. ( Exact name of registrant as specified in its charter ) Miami Lakes FL Large accelerated filer Non - accelerated filer Trading Symbol BKU ( I.R.S. Employer Identification No. ) Registrant's telephone number , including area code : ( 305 ) 569-2000 Securities registered pursuant to Section 12 ( b ) of the Act : Class Common Stock , $ 0.01 Par Value Securities 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 required 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 registrant was required to file such reports ) , and ( 2 ) has been subject to such filing requirements for the past 90 days . Yes > No 27-0162450 33016 ( Zip Code ) Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site , if any , every Interactive Data File required to be submitted and posted 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 and post such files ) . Yes No Accelerated filer Smaller reporting company Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S - K is not contained herein , and will not be contained , to the best of the registrant's knowledge , in definitive proxy or information statements incorporated by reference in Part III of this Form 10 - K or any amendment to this Form 10 - K . 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 . ☐ Name of Exchange on Which Registered New York Stock Exchange ☐ 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 o Indicate by check mark whether the registrant has filed a report on and attestation to its management's assessment of the effectiveness of its internal control over financial reporting under Section 404 ( b ) of the Sarbanes - Oxley Act ( 15 U.S.C. 7262 ( b ) ) by the registered public accounting firm that prepared or issued its audit report . < Indicate by check mark whether the registrant is a shell company ( as defined in Rule 12b - 2 of the Exchange Act ) . Yes □ No = The aggregate market value of the voting and non - voting common stock held by non - affiliates of the registrant on June 30 , 2020 was $ 1,852,385,492 The number of outstanding shares of the registrant common stock , $ 0.01 par value , as of February 24 , 2021 was 92,862,055 . DOCUMENTS INCORPORATED BY REFERENCE : Portions of the registrant's definitive proxy statement for the 2021 annual meeting of stockholders are incorporated by reference in this Annual Report on Form 10 - K in response to Part II . Item 5 and Part III . Items 10 , 11 , 12 , 13 and 14 .