Shareholders approve board declassification at Independent Bank Group; directors elected

the Board approved the Sixth Amended and Restated Bylaws of the Company (the “Amended Bylaws”), which became effective upon the filing and effectiveness of the Charter Amendment on May 22, 2023, in order to, among other things: • Make conforming changes to reflect the phasing out of the classified structure of the Board; • Reflect the universal proxy rules promulgated by the U.S. Securities and Exchange Commission, including requiring a shareholder that provides notice of its intent to nominate an individual to the Board pursuant to those rules to comply with all requirements of those rules; • Enhance and clarify the procedural mechanics and disclosure requirements in connection with a shareholder’s ability to request a special meeting of shareholders; • Allow for the Company to appoint a single inspector of election at shareholder meetings; and • Make certain other technical, conforming or clarifying changes.

The Charter Amendment eliminates the classification of the Board over a three-year period and provides for the annual election of all directors beginning at the 2025 Annual Meeting of Shareholders of the Company.

On May 18, 2023, at the 2023 Annual Meeting of Shareholders (the “Annual Meeting”) of Independent Bank Group, Inc. (the “Company”), the full results of which are included in Item 5.07 below, the Company’s shareholders approved an amendment to the Company’s Amended and Restated Certificate of Formation, as amended (the “Charter”), to provide for the phasing out of the classified structure of the Company’s Board of Directors (the “Board,” and such amendment, the “Charter Amendment”). The Charter Amendment eliminates the classification of the Board over a three-year period and provides for the annual election of all directors beginning at the 2025 Annual Meeting of Shareholders of the Company.