Third Coast Bancshares director awarded 3,600 options

Third Coast Bancshares, Inc. director Reagan Swinbank reported receiving a grant of stock options covering 3,600 shares of common stock.

Rhea-AI Filing Summary

Third Coast Bancshares, Inc. director Reagan Swinbank reported receiving a grant of stock options covering 3,600 shares of common stock. The options have an exercise price of $37.91 per share, become exercisable on March 16, 2027, and expire on March 16, 2036. Following this award, Swinbank holds stock options for 3,600 underlying shares directly.

Insider Trade Summary

Grant/Award: 3,600 shares

Grant/Award 1 txn

Insider Swinbank Reagan

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Stock Option (right to buy)	3,600	$0.00	$0.00

Holdings After Transaction: Stock Option (right to buy) — 3,600 contracts (Direct)

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Third Coast Bancshares (TCBX) disclose?

Third Coast Bancshares disclosed that director Reagan Swinbank received a grant of stock options for 3,600 shares of common stock. These options are a compensation-related award, not an open-market purchase or sale of existing shares, and are reported as a derivative security.

What are the key terms of Reagan Swinbank’s stock options at TCBX?

Reagan Swinbank’s stock options cover 3,600 shares of Third Coast Bancshares common stock at an exercise price of $37.91. They become exercisable on March 16, 2027, and expire on March 16, 2036, giving a long-dated incentive aligned with future company performance.

Is the Reagan Swinbank Form 4 transaction a stock purchase or sale of TCBX shares?

The Form 4 transaction is not a market purchase or sale. It reports a grant or award acquisition of stock options, a derivative security giving Reagan Swinbank the right to buy 3,600 TCBX shares at $37.91, starting March 16, 2027, until expiration in 2036.

How many Third Coast Bancshares shares are covered by Reagan Swinbank’s new options?

The option grant reported for Reagan Swinbank covers 3,600 underlying shares of Third Coast Bancshares common stock. After this award, the filing shows Swinbank directly holding stock options for 3,600 shares, indicating this grant establishes the reported derivative position.

When do Reagan Swinbank’s TCBX stock options expire and become exercisable?

Reagan Swinbank’s stock options in Third Coast Bancshares become exercisable on March 16, 2027. They carry an expiration date of March 16, 2036, providing a nine-year window after vesting during which the options may be exercised at the fixed $37.91 strike price.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 03/17/2026 - 04:30 PM Learn about SEC filing dates

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^*

Swinbank Reagan

(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.