Director Mary Stich receives 3,600 TCBX stock options at $37.91 strike

Rhea-AI Filing Summary

Third Coast Bancshares director Mary Stich received a grant of stock options as part of her compensation. She was awarded options covering 3,600 shares of Common Stock on March 16, 2026, with an exercise price of $37.91 per share. These options are exercisable starting on March 16, 2027 and expire on March 16, 2036. After this grant, she holds stock options for 3,600 shares directly, and the filing shows no open‑market purchases or sales.

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^*

Stich Mary

(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) disclose for Mary Stich?

Third Coast Bancshares disclosed that director Mary Stich received a grant of stock options for 3,600 shares of Common Stock. The options were awarded at an exercise price of $37.91 per share and represent compensation rather than an open-market trade.

Was the TCBX Form 4 for Mary Stich a stock purchase or sale?

The Form 4 for Mary Stich does not report any stock purchase or sale. It shows an acquisition of stock options as a grant, with no open-market buying or selling and net buy/sell activity reported as neutral in the summary data.

How many Third Coast Bancshares (TCBX) options did Mary Stich receive?

Director Mary Stich received stock options covering 3,600 shares of Third Coast Bancshares Common Stock. Following the transaction, her total reported derivative holdings consist of options for 3,600 shares, according to the Form 4 transaction details and summary information.

What is the exercise price and term of Mary Stich’s TCBX stock options?

The granted options have an exercise price of $37.91 per share. They become exercisable on March 16, 2027 and carry an expiration date of March 16, 2036, giving director Mary Stich a long-dated equity incentive in Third Coast Bancshares.

Does the Mary Stich Form 4 for TCBX indicate remaining derivative positions?

The filing shows a single grant of stock options for 3,600 shares and an empty derivative summary. This indicates the reported derivative position after the transaction consists of these newly granted options, with no additional option or warrant positions disclosed in this Form 4.