Martin Basaldua - 21 May 2026 Form 4 Insider Report for Third Coast Bancshares, Inc. (TCBX)

Reporting relationship: Director
Issuer ticker: TCBX
Reported as of: 21 May 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 26 May 2026, 16:30:03 UTC
Prior SEC filing: 17 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/ R. John McWhorter, attorney-in-fact

Key filing fact

Martin Basaldua filed Form 4 for Third Coast Bancshares, Inc. (TCBX) on 26 May 2026.

Key facts

This page summarizes Martin Basaldua's Form 4 filing for Third Coast Bancshares, Inc. (TCBX).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 26 May 2026, 16:30.

Change

Previous filing in this sequence was filed on 17 Mar 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001891434 Primary reporting owner

Basaldua Martin

Relationship: Director
Address: 20202 HIGHWAY 59 NORTH, SUITE 190, HUMBLE
Signature: /s/ R. John McWhorter, attorney-in-fact
Signature date: 26 May 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

TCBX transaction

Common Stock

Award

Transaction value
Shares: +1,318
Change %: +3.5%
Price: $0.000000^*
Shares after: 39,235
Date: 21 May 2026
Ownership: Direct
Footnotes: F1, F2

TCBX holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 37,525
Date: 21 May 2026
Ownership: By IRA FBO Martin Basaldua

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

Represents shares of restricted common stock, which vest on the anniversary of the grant date, subject to the terms of the award.

Footnote F2

Includes 18,124 shares received as a distribution from Pinnacle Executive Services, LLC ("Pinnacle") in connection with the divestment of the reporting person's entire membership interest in Pinnacle on November 7, 2022. In prior reports, the reporting person reported beneficial ownership of 36,248 shares held by Pinnacle.