BankUnited (NYSE: BKU) director receives 1,511 restricted shares in equity grant

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

Rubenstein William S. reported acquisition or exercise transactions in this Form 4 filing.

BankUnited, Inc. director William S. Rubenstein reported an equity compensation grant and updated share holdings. He received 1,511 restricted shares of common stock under the BankUnited, Inc. Amended and Restated 2023 Omnibus Equity Incentive Plan at a stated price of $0.00 per share. These restricted shares were granted on May 21, 2026 and will vest in full on the earlier of the first anniversary of the grant date or the issuer's next annual meeting of shareholders, subject to his continued service as a director through the vesting date. Following this award, he holds 3,545 common shares directly. Separately, a holding entry reports 10,282 common shares held indirectly through the William S. Rubenstein 2020 Revocable Trust, over which he has voting and dispositive power.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Rubenstein William S.

Role null

Type	Security	Shares	Price	Value
Grant/Award	Common Stock, par value $0.01 per share	1,511	$0.00	--
holding	Common Stock, par value $0.01 per share	--	--	--

Holdings After Transaction: Common Stock, par value $0.01 per share — 3,545 shares (Direct, null); Common Stock, par value $0.01 per share — 10,282 shares (Indirect, The William S. Rubenstein 2020 Revocable Trust)

Footnotes (1)

Reflects 1,511 restricted shares issued pursuant to the terms of the BankUnited, Inc. Amended and Restated 2023 Omnibus Equity Incentive Plan. The restricted shares have a grant date of May 21, 2026, and will vest in full on the earlier of the first anniversary of the date of grant or the date of the issuer's next annual meeting of shareholders, subject to the reporting person's continued service as a director through the vesting date. The shares are held in the William S. Rubenstein 2020 Revocable Trust, over which the Reporting Person has voting and dispositive power.

Key Figures

Restricted shares granted: 1,511 shares Grant price per share: $0.00 per share Direct holdings after award: 3,545 shares +2 more

5 metrics

Restricted shares granted 1,511 shares Equity award on May 21, 2026

Grant price per share $0.00 per share Restricted stock award terms

Direct holdings after award 3,545 shares Common stock held directly post-transaction

Indirect trust holdings 10,282 shares Held by 2020 Revocable Trust with voting and dispositive power

Transaction code A Grant, award, or other acquisition of non-derivative common stock

Key Terms

restricted shares, Amended and Restated 2023 Omnibus Equity Incentive Plan, vest in full, voting and dispositive power, +1 more

5 terms

restricted shares financial

"Reflects 1,511 restricted shares issued pursuant to the terms of the BankUnited, Inc. Amended and Restated 2023 Omnibus Equity Incentive Plan."

Restricted shares are company stock that cannot be sold or transferred immediately because they are subject to legal or contractual limits, such as a required holding period or performance conditions. They matter to investors because these locked-up shares can affect a company’s available stock for trading, future dilution, and insider incentives—imagine a gift that can’t be cashed until certain conditions are met, which changes when and how much supply can suddenly enter the market.

Amended and Restated 2023 Omnibus Equity Incentive Plan financial

"issued pursuant to the terms of the BankUnited, Inc. Amended and Restated 2023 Omnibus Equity Incentive Plan."

vest in full financial

"will vest in full on the earlier of the first anniversary of the date of grant or the date of the issuer's next annual meeting of shareholders"

voting and dispositive power financial

"The shares are held in the William S. Rubenstein 2020 Revocable Trust, over which the Reporting Person has voting and dispositive power."

Revocable Trust financial

"The shares are held in the William S. Rubenstein 2020 Revocable Trust, over which the Reporting Person has voting and dispositive power."

A revocable trust is a legal arrangement where the person who creates it keeps control and can change or cancel the trust at any time, while naming who will manage and receive the assets later. Think of it like a flexible folder for your investments and property that can be relabeled or reworked as circumstances change; it matters to investors because it determines how ownership is recorded, how easily assets transfer on incapacity or death, and whether holdings bypass public probate proceedings.

Form 4 Insider Transactions: What Each Field Means →

05/21/2026 - 07:06 PM

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Rubenstein William S.

(Last)

(First)

(Middle)

C/O BANKUNITED, INC.

14817 OAK LANE

(Street)

MIAMI LAKES

FLORIDA

33016

(City)

(State)

(Zip)

UNITED STATES

(Country)

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

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/21/2026

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

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

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

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock, par value $0.01 per share	05/21/2026		A		1,511⁽¹⁾	A	$0	3,545	D
Common Stock, par value $0.01 per share								10,282	I	The William S. Rubenstein 2020 Revocable Trust⁽²⁾

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. Reflects 1,511 restricted shares issued pursuant to the terms of the BankUnited, Inc. Amended and Restated 2023 Omnibus Equity Incentive Plan. The restricted shares have a grant date of May 21, 2026, and will vest in full on the earlier of the first anniversary of the date of grant or the date of the issuer's next annual meeting of shareholders, subject to the reporting person's continued service as a director through the vesting date.

2. The shares are held in the William S. Rubenstein 2020 Revocable Trust, over which the Reporting Person has voting and dispositive power.

	/s/ Jacqueline Bravo, as Attorney-in-Fact	05/21/2026
	** 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 4 (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.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR

FAQ

What did BankUnited (BKU) director William S. Rubenstein report in this Form 4?

He reported receiving 1,511 restricted shares of BankUnited common stock as an equity award. The filing also updates his direct and indirect share holdings, including shares held through a revocable trust where he has voting and dispositive power.

How many BankUnited (BKU) shares did Rubenstein acquire, and at what price?

Rubenstein acquired 1,511 restricted shares of BankUnited common stock at a stated price of $0.00 per share. This reflects an equity compensation grant rather than an open-market purchase, aligning with the company’s Amended and Restated 2023 Omnibus Equity Incentive Plan.

When do William S. Rubenstein’s new BankUnited (BKU) restricted shares vest?

The 1,511 restricted shares vest in full on the earlier of the first anniversary of the May 21, 2026 grant date or the date of BankUnited’s next annual shareholders meeting. Vesting is conditioned on his continued service as a director through that vesting date.

How many BankUnited (BKU) shares does Rubenstein hold directly after this award?

After the restricted stock award, Rubenstein holds 3,545 BankUnited common shares directly. This reflects his post‑transaction direct ownership reported in the Form 4 and does not include additional shares held indirectly through a revocable trust.

What indirect BankUnited (BKU) holdings are reported for Rubenstein in this Form 4?

The Form 4 reports 10,282 BankUnited common shares held indirectly through the William S. Rubenstein 2020 Revocable Trust. According to the footnote, Rubenstein has both voting and dispositive power over these trust-held shares, indicating effective control over that position.

Was Rubenstein’s BankUnited (BKU) Form 4 transaction an open-market buy or sell?

No open-market buy or sell is reported. The Form 4 shows an acquisition coded as a grant or award of 1,511 restricted shares at $0.00, plus a separate holding entry for trust-owned shares, rather than market purchases or sales of BankUnited stock.