Third Coast Bancshares (TCBX) officer uses 63 shares to cover tax liability

Rhea-AI Filing Summary

Third Coast Bancshares, Inc. officer Christopher Seay Peacock reported a routine tax-related share disposition. On 2026-03-15, he transferred 63 shares of common stock at $37.34 per share to cover tax obligations, a non‑market transaction. Following this, he directly held 1,489 shares and indirectly held 1,622 shares through an ESOP.

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^*

Peacock Christopher Seay

(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)
03/15/2026

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
Common Stock	03/15/2026		F		63	D	$37.34	1,489	D
Common Stock								1,622	I	By ESOP

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:

Remarks:

Executive Vice President and Chief Retail Officer

	/s/ R. John McWhorter, attorney-in-fact	03/16/2026
	** 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 TCBX officer Christopher Seay Peacock report on this Form 4?

Christopher Seay Peacock reported a tax-related share disposition rather than an open-market trade. On 2026-03-15 he delivered 63 shares of Third Coast Bancshares common stock to satisfy tax obligations, using existing holdings instead of cash to cover the liability.

How many Third Coast Bancshares (TCBX) shares were used for tax withholding?

The filing shows 63 shares of Third Coast Bancshares common stock were delivered for tax withholding. These shares were valued at $37.34 each, reflecting a small transfer relative to typical insider positions and indicating a routine settlement of tax liabilities.

What does transaction code F mean in the TCBX Form 4 for Christopher Seay Peacock?

Transaction code F indicates payment of an exercise price or tax liability by delivering securities. For Christopher Seay Peacock, it reflects a tax-withholding disposition of 63 shares of Third Coast Bancshares common stock, not an open-market sale initiated for investment or trading purposes.

How many TCBX shares does Christopher Seay Peacock hold after this reported transaction?

After the reported tax-withholding transaction, Christopher Seay Peacock directly held 1,489 shares of Third Coast Bancshares common stock. He also had an additional 1,622 shares indirectly held through an ESOP, giving him both direct and plan-based exposure to the company’s equity.

Is the TCBX Form 4 transaction a market sale of shares by Christopher Seay Peacock?

The Form 4 describes a tax-withholding disposition, not a market sale. Shares were delivered to satisfy tax obligations associated with equity, so this entry records an administrative event rather than a discretionary decision to sell Third Coast Bancshares shares on the open market.