[Form 3] BankUnited, Inc. Initial Statement of Beneficial Ownership

Rhea-AI Filing Summary

BankUnited, Inc. (BKU) reported the equity holdings of its Chief Financial Officer in a beneficial ownership filing. The filing shows the officer holds 26,810 restricted share units tied to BankUnited common stock under the company’s 2023 Omnibus Equity Incentive Plan. According to the vesting schedule, 8,937 units will vest on August 20, 2026, 8,936 units will vest on August 20, 2027, and 8,937 units will vest on August 20, 2028. Each unit represents the right to receive either one share of common stock or cash equal to the fair market value of one share at settlement.

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Mackey James G.

(Last) (First) (Middle)

C/O BANKUNITED, INC.

14817 OAK LANE

(Street)

MIAMI LAKES FL 33016

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
11/10/2025

3. Issuer Name and Ticker or Trading Symbol
BankUnited, Inc. [ BKU ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Financial Officer

5. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Share Unit	(1)	(1)	Common Stock, par value $0.01 per share	26,810	(2)	D

Explanation of Responses:

1. Granted pursuant to the terms of the BankUnited, Inc. 2023 Omnibus Equity Incentive Plan. 8,937 units will vest on August 20, 2026, 8,936 units will vest on August 20, 2027, and 8,937 will vest on August 20, 2028.

2. Each restricted share unit represents the right to receive, at settlement, one share of common stock or cash in an amount equal to the fair market value of one share of common stock.

Remarks:

Exhibit List 24: Power of Attorney

	/s/ Jacqueline Bravo, as Attorney-in-Fact	11/17/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did BankUnited, Inc. (BKU) disclose in this ownership filing?

BankUnited, Inc. disclosed the equity holdings of its Chief Financial Officer, reporting 26,810 restricted share units related to BankUnited common stock.

Who is the reporting person in the BankUnited (BKU) filing and what is their role?

The reporting person is an officer of BankUnited, Inc., serving as the Chief Financial Officer, and this filing reports their beneficial ownership of company equity awards.

How many restricted share units does the BankUnited (BKU) CFO beneficially own?

The Chief Financial Officer beneficially owns 26,810 restricted share units granted under the BankUnited, Inc. 2023 Omnibus Equity Incentive Plan.

What is the vesting schedule for the BankUnited (BKU) restricted share units?

The filing states that 8,937 units will vest on August 20, 2026, 8,936 units will vest on August 20, 2027, and 8,937 units will vest on August 20, 2028.

What does each restricted share unit represent for BankUnited (BKU)?

Each restricted share unit represents the right to receive, at settlement, one share of BankUnited common stock or cash equal to the fair market value of one share of common stock.

Under which plan were the BankUnited (BKU) restricted share units granted?

The restricted share units were granted pursuant to the BankUnited, Inc. 2023 Omnibus Equity Incentive Plan, as stated in the filing.