TCBX · Third Coast Bancshares, Inc.

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 $39.84 to $40.54 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.

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

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

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

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

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

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

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.

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

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

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

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

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

Represents shares of restricted common stock, which vest in three equal annual installments beginning on the anniversary of the grant date, subject to the terms of the award.

Represents shares of restricted common stock, which vest in three equal annual installments beginning on the anniversary of the grant date, subject to the terms of the award.

Represents shares of restricted common stock, which vest in three equal annual installments beginning on the anniversary of the grant date, subject to the terms of the award.

Represents shares of restricted common stock, which vest in three equal annual installments beginning on the anniversary of the grant date, subject to the terms of the award.

Represents shares of restricted common stock, which vest in three equal annual installments beginning on the anniversary of the grant date, subject to the terms of the award.

Represents shares of restricted common stock, which vest in three equal annual installments beginning on the anniversary of the grant date, subject to the terms of the award.

Represents 760 shares withheld by the Issuer to pay the exercise price on an aggregate of 2,000 stock options that were set to expire on January 1, 2031.

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.

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 $37.68 to $38.04 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.