Director Greg Bonnen granted 3,600 options at Third Coast (TCBX)

Rhea-AI Filing Summary

Third Coast Bancshares director Greg Bonnen received a new stock option grant. He was awarded options to acquire 3,600 shares of Third Coast Bancshares, Inc. common stock at an exercise price of $37.91 per share. These options are exercisable starting on March 16, 2027 and expire on March 16, 2036. Following this grant, Bonnen holds 3,600 stock options directly.

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

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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^*

Bonnen Greg

(Last) (First) (Middle)

20202 HIGHWAY 59 NORTH, SUITE 190

(Street)

HUMBLE TX 77338

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Third Coast Bancshares, Inc. [ TCBX ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
03/16/2026

4. 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 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

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
Stock Option (right to buy)	$37.91	03/16/2026		A		3,600		03/16/2027	03/16/2036	Common Stock	3,600	$0	3,600	D

Explanation of Responses:

	/s/ R. John McWhorter, attorney-in-fact	03/17/2026
	** 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.

FAQ

What insider transaction did Third Coast Bancshares (TCBX) report for Greg Bonnen?

Third Coast Bancshares reported that director Greg Bonnen received a grant of stock options covering 3,600 shares of common stock. This is a compensation-related award, not an open-market purchase or sale, and gives him the right to buy shares at a fixed exercise price.

How many stock options did Greg Bonnen receive from Third Coast Bancshares (TCBX)?

Greg Bonnen received stock options for 3,600 shares of Third Coast Bancshares common stock. These options provide potential future ownership if exercised and reflect part of his equity-based director compensation as disclosed in the Form 4 filing.

What is the exercise price of Greg Bonnen’s TCBX stock options?

The exercise price of Greg Bonnen’s stock options is $37.91 per share. This means he can later buy up to 3,600 shares of Third Coast Bancshares common stock at that fixed price, regardless of the market price at the time of exercise.

When do Greg Bonnen’s Third Coast Bancshares (TCBX) stock options expire?

Greg Bonnen’s stock options expire on March 16, 2036. If he does not exercise the options by that date, the right to purchase up to 3,600 shares of Third Coast Bancshares common stock at $37.91 per share will lapse.

Is Greg Bonnen’s Form 4 transaction in TCBX a market buy or sell?

The Form 4 reports a grant of stock options to Greg Bonnen, not a market buy or sell. It is categorized as a grant or award acquisition, reflecting equity compensation rather than an open-market trade in Third Coast Bancshares shares.