X0306 5 2021-12-31 0 0 0 0001504008 BankUnited, Inc. BKU 0001634049 Cornish Thomas M. C/O BANKUNITED, INC. 14817 OAK LANE MIAMI LAKES FL 33016 0 1 0 0 Chief Operating Officer Common Stock, par value $0.01 per share 2021-04-28 5 G 0 2249 D 99600 D Common Stock, par value $0.01 per share 400 I As Co-Trustee Bona fide gift by the Reporting Person for no consideration. Shares held by the P.A. Castellanos-Cornish Revocable Trust for which Mr. Cornish serves as a co-trustee. The reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of these shares for Section 16 or any other purpose. /s/ Susan Greenfield as Attorney-in-Fact 2022-01-10