X0306 4 2012-09-17 0 0001504008 BankUnited, Inc. BKU 0001194339 BOHLSEN JOHN C/O BANKUNITED, INC. 14817 OAK LANE MIAMI LAKES FL 33016 1 1 0 0 Chief Lending Officer Common Stock, par value $0.01 per share 2012-09-17 4 S 0 55778 25.1886 D 573895 D Common Stock, par value $0.01 per share 2012-09-18 4 S 0 42000 25.3505 D 531895 D Common Stock, par value $0.01 per share 2012-09-19 4 S 0 48974 25.5249 D 482921 D Common Stock, par value $0.01 per share 780425 I as Trustee The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan established by the reporting person on August 31, 2012. This transaction was executed in multiple trades at prices ranging from $25.00 to $25.33. The price reported represents the weighted average sale price of these trades. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer, full information regarding the shares sold at each separate price. This transaction was executed in multiple trades at prices ranging from $25.10 to $25.52. The price reported represents the weighted average sale price of these trades. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer, full information regarding the shares sold at each separate price. This transaction was executed in multiple trades at prices ranging from $25.44 to $25.67. The price reported represents the weighted average sale price of these trades. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer, full information regarding the shares sold at each separate price. Shares held by the Bohlsen 2010 Annuity Trust, over which the reporting person is the 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 for any other purpose. /s/ Douglas J. Pauls, as Attorney-in-Fact 2012-09-19