Amerant Bancorp (AMTB) director converts 3,761 RSUs, lifts direct share stake

Rhea-AI Filing Summary

Amerant Bancorp Inc. director Gustavo M. Marturet exercised restricted stock units into common shares. On May 7, 2026, he converted 3,761 restricted stock units, each economically equivalent to one share of Class A Common Stock, into 3,761 Class A shares at a stated price of $0.00 per share. After this exercise, his direct holding of Class A Common Stock increased to 12,013 shares. The filing also lists significant indirect holdings, including 612,443 shares held by an Irrevocable Florida Trust for GAMM and 70,657 shares held by certain trusts and companies under common control for Marturet family members. The transactions reflect equity compensation vesting and do not include any open-market purchases or sales.

Insights

Equity compensation and governance analyst

Routine RSU vesting increases director’s direct share ownership without market buying.

The filing shows Gustavo M. Marturet, a director of Amerant Bancorp Inc., exercising 3,761 restricted stock units into Class A Common Stock at a stated price of $0.00 per share. This is a standard equity compensation vesting event, not an open-market transaction.

Following the exercise, his direct holdings rise to 12,013 Class A shares, while large additional positions are held indirectly through trusts, including 612,443 shares in an Irrevocable Florida Trust for GAMM and 70,657 shares in other Marturet family-related entities. No derivative positions remain in the derivative table.

Because there are no reported sales or cash purchases, the economic signal is limited; the event mainly confirms ongoing use of stock-based compensation and the scale of family-related indirect ownership as of May 7, 2026.

Insider Trade Summary

3,761 shares exercised/converted

Mixed 4 txns

Insider Marturet M. Gustavo

Role null

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units 2025	3,761	$0.00	--
Exercise	Class A Common Stock	3,761	$0.00	--
holding	Class A Common Stock	--	--	--
holding	Class A Common Stock	--	--	--

Holdings After Transaction: Restricted Stock Units 2025 — 0 shares (Direct, null); Class A Common Stock — 12,013 shares (Direct, null); Class A Common Stock — 70,657 shares (Indirect, See footnote)

Footnotes (1)

1. Each restricted stock unit ("RSU") is the economic equivalent of one share of Class A Common Stock. These shares consist of shares held by certain trusts and companies under common control by and/or for the benefit of certain members of the Marturet family. On May 7, 2025, the reporting person was granted 3,761 RSUs. Such RSU award will vest on the first anniversary of the date of the grant, provided that the reporting person remains in continuous service of the Company as a Director through the vesting date. Each RSU represents a right to receive one share of Class A Common Stock upon vesting.

Key Figures

RSUs exercised: 3,761 units Direct shares after transaction: 12,013 shares Indirect trust holding (GAMM trust): 612,443 shares +2 more

5 metrics

RSUs exercised 3,761 units Restricted Stock Units 2025 converted to Class A Common Stock on May 7, 2026

Direct shares after transaction 12,013 shares Class A Common Stock directly owned by Gustavo M. Marturet after RSU exercise

Indirect trust holding (GAMM trust) 612,443 shares Class A Common Stock held by Irrevocable Florida Trust for GAMM

Other indirect family-related holdings 70,657 shares Class A Common Stock held by certain trusts and companies under Marturet family control

Exercise price per RSU $0.00 per unit Stated transaction price for RSU-to-share conversion

Key Terms

Restricted Stock Units 2025, restricted stock unit ("RSU"), Irrevocable Florida Trust for GAMM, exercise or conversion of derivative security, +1 more

5 terms

Restricted Stock Units 2025 financial

"security_title: "Restricted Stock Units 2025""

restricted stock unit ("RSU") financial

"Each restricted stock unit ("RSU") is the economic equivalent of one share"

Irrevocable Florida Trust for GAMM financial

"nature_of_ownership: "By Irrevocable Florida Trust for GAMM""

exercise or conversion of derivative security financial

"transaction_code_description: "Exercise or conversion of derivative security""

Class A Common Stock financial

"security_title: "Class A Common Stock""

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

Form 4 Insider Transactions: What Each Field Means →

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^*

Marturet M. Gustavo

(Last) (First) (Middle)

C/O AMERANT BANCORP INC.

220 ALHAMBRA CIRCLE

(Street)

CORAL GABLES FLORIDA 33134

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Amerant Bancorp Inc. [ AMTB ]

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)
05/07/2026

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)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	05/07/2026		M		3,761	A	$0(1)	12,013	D
Class A Common Stock								70,657	I	See footnote(2)
Class A Common Stock								612,443	I	By Irrevocable Florida Trust for GAMM

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units 2025	$0(1)	05/07/2026		M			3,761	(3)	(3)	Class A Common Stock	3,761	$0	0	D

Explanation of Responses:

1. Each restricted stock unit ("RSU") is the economic equivalent of one share of Class A Common Stock.

2. These shares consist of shares held by certain trusts and companies under common control by and/or for the benefit of certain members of the Marturet family.

3. On May 7, 2025, the reporting person was granted 3,761 RSUs. Such RSU award will vest on the first anniversary of the date of the grant, provided that the reporting person remains in continuous service of the Company as a Director through the vesting date. Each RSU represents a right to receive one share of Class A Common Stock upon vesting.

Remarks:

	/s/ Julio V. Pena, as Attorney-in-Fact for Gustavo Marturet M.	05/11/2026
	** 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)

FAQ

What insider transaction did Amerant Bancorp Inc. (AMTB) report for Gustavo M. Marturet?

Amerant Bancorp reported that director Gustavo M. Marturet exercised 3,761 restricted stock units into Class A Common Stock on May 7, 2026. This increased his direct holdings but did not involve any open-market purchases or sales.

How many Amerant Bancorp (AMTB) shares does Gustavo M. Marturet hold after this Form 4?

After the reported transactions, Gustavo M. Marturet holds 12,013 Class A shares directly. In addition, the filing lists 612,443 shares held by an Irrevocable Florida Trust for GAMM and 70,657 shares held by other Marturet family-related trusts and companies.

Did Gustavo M. Marturet buy or sell Amerant Bancorp (AMTB) stock in the market?

The Form 4 does not show any open-market buys or sells. Instead, it reports a derivative code M transaction where 3,761 restricted stock units were exercised into Class A Common Stock as part of equity compensation vesting.

What are the restricted stock units reported for Amerant Bancorp director Gustavo M. Marturet?

The filing describes each restricted stock unit (RSU) as the economic equivalent of one Class A share. The 3,761 RSUs converted on May 7, 2026 into 3,761 Class A shares, reflecting a typical stock-based compensation structure for directors.

How are Gustavo M. Marturet’s indirect Amerant Bancorp (AMTB) holdings structured?

Indirect holdings include 612,443 Class A shares held by an Irrevocable Florida Trust for GAMM and 70,657 shares held by certain trusts and companies under common control for Marturet family members, as disclosed in the Form 4 footnotes.

Does this Amerant Bancorp (AMTB) Form 4 indicate any remaining derivative positions for Gustavo M. Marturet?

The filing’s derivative section shows the Restricted Stock Units 2025 position at 0.0000 after the 3,761-unit exercise, and the derivative summary is empty, indicating no remaining derivative holdings are listed in this report.