[Form 4] Third Coast Bancshares, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Third Coast Bancshares, Inc. (TCBX) insider trade reported. An executive officer, identified in the remarks as the Executive Vice President and Chief Banking Officer, reported an open market sale of common stock on 11/17/2025.

The filing shows a sale of 245 shares of Third Coast Bancshares common stock at a weighted average price of $36.3032 per share, reported as transaction code “S” for a sale. After this transaction, the reporting person beneficially owned 47,106 shares directly, 2,020 shares through an ESOP, and 11,750 shares through an IRA.

The sale resulted from a broker-dealer trade order that was executed in multiple same‑day open market trades, with prices ranging from $36.1501 to $36.42 per share. These trades are reported on an aggregate basis using the weighted average price, and the reporting person has undertaken to provide detailed price breakdowns upon request.

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^*

Bobbora William

(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)

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

3. Date of Earliest Transaction (Month/Day/Year)
11/17/2025

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
Common Stock	11/17/2025		S		245	D	$36.3032(1)	47,106	D
Common Stock								2,020	I	By ESOP
Common Stock								11,750	I	By IRA

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

Explanation of Responses:

1. The reporting person executed a trade order through a broker-dealer which resulted in multiple same day, same way open market sales, with prices ranging from $36.1501 to $36.42 per share, inclusive. The reporting person has reported these sales on an aggregate basis using the weighted average price for the transactions. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.

Remarks:

Executive Vice President and Chief Banking Officer

	/s/ R. John McWhorter, attorney-in-fact	11/20/2025
	** 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 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 TCBX report in this Form 4?

The filing reports that an executive officer of Third Coast Bancshares, Inc. (TCBX) sold 245 shares of common stock in an open market transaction on 11/17/2025 at a weighted average price of $36.3032 per share.

What is the reporting person’s role at Third Coast Bancshares (TCBX)?

The reporting person is an officer of Third Coast Bancshares, described in the remarks as the company’s Executive Vice President and Chief Banking Officer.

How many TCBX shares does the insider own after this transaction?

Following the reported sale, the insider beneficially owns 47,106 shares of TCBX common stock directly, 2,020 shares indirectly through an ESOP, and 11,750 shares indirectly through an IRA.

At what prices were the TCBX shares sold in this Form 4 transaction?

The trade order resulted in multiple same‑day open market sales with prices ranging from $36.1501 to $36.42 per share, inclusive. The sale is reported using a weighted average price of $36.3032 per share.

How were the multiple TCBX trades reported in this insider filing?

The reporting person executed a trade order through a broker-dealer that produced multiple same day, same way open market sales. These are reported on an aggregate basis using the weighted average price, and the insider has agreed to provide the number of shares sold at each separate price upon request.

Is this TCBX Form 4 filed by one or multiple reporting persons?

The Form 4 is indicated as being filed by one reporting person, as shown in the section on individual or joint/group filing.