STEL / Stellar Bancorp, Inc. - SEC-Einreichungen, Jahresbericht, Proxy Statement

Stellar Bancorp, Inc.
US ˙ NYSE ˙ US8589271068

Basisstatistiken
LEI 54930070P8Z0WHFBB536
CIK 1473844
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Stellar Bancorp, Inc.
SEC Filings (Chronological Order)
Auf dieser Seite finden Sie eine vollständige, chronologische Liste der SEC-Einreichungen, mit Ausnahme der Eigentumseinreichungen, die wir an anderer Stelle bereitstellen.
May 27, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): May 27, 2026 Stellar Bancorp, Inc

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): May 27, 2026 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Number

May 20, 2026 425

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): May 20, 2026 Stellar Bancorp, Inc

425 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): May 20, 2026 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Nu

May 20, 2026 EX-99.1

STELLAR BANCORP, INC. ANNOUNCES QUARTERLY DIVIDEND

Exhibit 99.1 PRESS RELEASE STELLAR BANCORP, INC. ANNOUNCES QUARTERLY DIVIDEND HOUSTON, May 20, 2026 - (BUSINESS WIRE) – Stellar Bancorp, Inc. (the “Company”) (NYSE: STEL) announced today that on May 20, 2026, its Board of Directors declared a quarterly cash dividend of $0.15 per share of common stock payable on June 26, 2026, to the shareholders of record at the close of business on June 15, 2026.

May 20, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): May 20, 2026 Stellar Bancorp, Inc

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): May 20, 2026 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Number

May 20, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): May 20, 2026 Stellar Bancorp, Inc

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): May 20, 2026 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Number

May 19, 2026 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Pro

April 28, 2026 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q S QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2026 OR £ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO COMMISSION FILE NUMBER: 001-38280 St

April 28, 2026 EX-99.1

STELLAR BANCORP, INC. REPORTS FIRST QUARTER 2026 RESULTS

Exhibit 99.1 PRESS RELEASE STELLAR BANCORP, INC. REPORTS FIRST QUARTER 2026 RESULTS HOUSTON, April 28, 2026 - Stellar Bancorp, Inc. (the “Company” or “Stellar”) (NYSE: STEL) today reported net income of $27.0 million, or diluted earnings per share of $0.53, for the first quarter of 2026, compared to net income of $26.1 million, or diluted earnings per share of $0.51, for the fourth quarter of 2025

April 28, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): April 28, 2026 Stellar Bancorp, I

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): April 28, 2026 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Numb

April 22, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): April 22, 2026 Stellar Bancorp, I

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): April 22, 2026 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Numb

April 22, 2026 EX-99.1

PROSPERITY BANCSHARES AND STELLAR BANCORP ANNOUNCE RECEIPT OF REGULATORY APPROVALS FOR PROSPERITY’S PENDING ACQUISITION OF STELLAR

Exhibit 99.1 PRESS RELEASE PROSPERITY BANCSHARES AND STELLAR BANCORP ANNOUNCE RECEIPT OF REGULATORY APPROVALS FOR PROSPERITY’S PENDING ACQUISITION OF STELLAR FOR IMMEDIATE RELEASE HOUSTON, TEXAS, April 22, 2026. Prosperity Bancshares, Inc.® (NYSE: PB) (“Prosperity”), the parent company of Prosperity Bank®, and Stellar Bancorp, Inc. (NYSE: STEL) (“Stellar”), the parent company of Stellar Bank, toda

April 22, 2026 425

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report: (Date of earliest event reported) April 22, 2026 STELLAR BANCORP, I

425 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report: (Date of earliest event reported) April 22, 2026 STELLAR BANCORP, INC. (Exact name of registrant as specified in its charter) Texas 001-38280 20-8339782 (State or other jurisdiction of incorporation) (Commission F

April 21, 2026 DEFM14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

DEFM14A Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

April 17, 2026 10-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K/A (Amendment No. 1)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K/A (Amendment No. 1) S ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE FISCAL YEAR ENDED DECEMBER 31, 2025 OR £ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO COMMISSION FILE NUMBER: 001-38280 Stell

April 1, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): April 1, 2026 Stellar Bancorp, In

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): April 1, 2026 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Numbe

February 26, 2026 EX-10.18

RESTRICTED STOCK AWARD GRANT NOTICE STELLAR BANCORP, INC. 2022 OMNIBUS INCENTIVE PLAN

EXHIBIT 10.18 RESTRICTED STOCK AWARD GRANT NOTICE STELLAR BANCORP, INC. 2022 OMNIBUS INCENTIVE PLAN Stellar Bancorp, Inc., a Texas corporation (the “Company” or “Stellar”), pursuant to its 2022 Omnibus Incentive Plan (the “Plan”), hereby grants to the individual listed below (“Participant”), the award (“Award”) of shares of restricted stock set forth below. This Award is subject to all of the term

February 26, 2026 EX-10.16

PERFORMANCE-BASED RESTRICTED STOCK UNIT AWARD GRANT NOTICE STELLAR BANCORP, INC. 2022 OMNIBUS INCENTIVE PLAN

EXHIBIT 10.16 PERFORMANCE-BASED RESTRICTED STOCK UNIT AWARD GRANT NOTICE STELLAR BANCORP, INC. 2022 OMNIBUS INCENTIVE PLAN Stellar Bancorp, Inc., a Texas corporation (the “Company” or “Stellar”), pursuant to its 2022 Omnibus Incentive Plan (the “Plan”), hereby grants to the individual listed below (“Participant”), this award (“Award”) of performance-based restricted stock units (the “PRSUs”). This

February 26, 2026 EX-24.1

POWER OF ATTORNEY

Exhibit 24.1 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Robert R. Franklin, Jr., Paul P. Egge and Justin M. Long, and each of them, his or her true and lawful attorneys-in-fact and agents, and with power of substitution and re-substitution, for him or her and in his or her name, place and stead, and in any and all capac

February 26, 2026 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K S ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE FISCAL YEAR ENDED DECEMBER 31, 2025 OR £ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO COMMISSION FILE NUMBER: 001-38280 Stellar Bancorp, Inc. (Ex

February 26, 2026 EX-10.12

STELLAR BANCORP, INC. 2022 OMNIBUS INCENTIVE PLAN AMENDMENT TO PERFORMANCE-BASED RESTRICTED STOCK UNIT AWARD AGREEMENT

Exhibit 10.12 STELLAR BANCORP, INC. 2022 OMNIBUS INCENTIVE PLAN AMENDMENT TO PERFORMANCE-BASED RESTRICTED STOCK UNIT AWARD AGREEMENT This Amendment to Performance-Based Restricted Stock Unit Award Agreement (this “Amendment”) by and between Stellar Bancorp, Inc., a Texas corporation (the “Company” or “Stellar”), and the individual listed below (“Participant” and together with the Company, the “Par

February 26, 2026 EX-21.1

STELLAR BANCORP, INC. LIST OF SUBSIDIARIES AS OF FEBRUARY 26, 2026

Exhibit 21.1 STELLAR BANCORP, INC. LIST OF SUBSIDIARIES AS OF FEBRUARY 26, 2026 Direct Subsidiaries Jurisdiction of Organization Parent Entity Stellar Bank Texas Stellar Bancorp, Inc. Farmers & Merchants Capital Trust II Delaware Stellar Bancorp, Inc. Farmers & Merchants Capital Trust III Delaware Stellar Bancorp, Inc. Indirect Subsidiaries Jurisdiction of Organization Parent Entity STEL Insurance

February 26, 2026 EX-10.14

STELLAR BANCORP, INC. 2022 OMNIBUS INCENTIVE PLAN AMENDMENT TO PERFORMANCE-BASED RESTRICTED STOCK UNIT AWARD AGREEMENT

Exhibit 10.14 STELLAR BANCORP, INC. 2022 OMNIBUS INCENTIVE PLAN AMENDMENT TO PERFORMANCE-BASED RESTRICTED STOCK UNIT AWARD AGREEMENT This Amendment to Performance-Based Restricted Stock Unit Award Agreement (this “Amendment”) by and between Stellar Bancorp, Inc., a Texas corporation (the “Company” or “Stellar”), and the individual listed below (“Participant” and together with the Company, the “Par

February 26, 2026 EX-19.1

Stellar Bancorp, Inc. Insider Trading Policy (As Amended February 26, 2025)

Exhibit 19.1 Stellar Bancorp, Inc. Insider Trading Policy (As Amended February 26, 2025) This Insider Trading Policy (this “Policy”) describes the standards of Stellar Bancorp, Inc. and its subsidiaries (the “Company”) on trading, and causing the trading of, the Company’s securities or securities of certain other publicly traded companies while in possession of confidential information. This Polic

February 26, 2026 EX-10.17

RESTRICTED STOCK AWARD GRANT NOTICE STELLAR BANCORP, INC. 2022 OMNIBUS INCENTIVE PLAN

EXHIBIT 10.17 RESTRICTED STOCK AWARD GRANT NOTICE STELLAR BANCORP, INC. 2022 OMNIBUS INCENTIVE PLAN Stellar Bancorp, Inc., a Texas corporation (the “Company” or “Stellar”), pursuant to its 2022 Omnibus Incentive Plan (the “Plan”), hereby grants to the individual listed below (“Participant”), the award (“Award”) of shares of restricted stock set forth below. This Award is subject to all of the term

February 25, 2026 EX-99.1

STELLAR BANCORP, INC. ANNOUNCES QUARTERLY DIVIDEND

Exhibit 99.1 PRESS RELEASE STELLAR BANCORP, INC. ANNOUNCES QUARTERLY DIVIDEND HOUSTON, February 25, 2026 - (BUSINESS WIRE) – Stellar Bancorp, Inc. (the “Company”) (NYSE: STEL) announced today that on February 25, 2026, its Board of Directors declared a quarterly cash dividend of $0.15 per share of common stock payable on March 31, 2026, to the shareholders of record at the close of business on Mar

February 25, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): February 25, 2026 Stellar Bancorp

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): February 25, 2026 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File N

January 29, 2026 425

-2-

425 Filed by Prosperity Bancshares, Inc. pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: Stellar Bancorp, Inc. Commission File No.: 001-38280 Date: January 29, 2026 The following are excerpts from the transcript of the Q4 2025 earnings call held by Prosperity Bancshares, Inc. (“Prosperity” or

January 29, 2026 EX-10.1

VOTING AGREEMENT

Exhibit 10.1 VOTING AGREEMENT This Voting Agreement (this “Agreement”), dated as of January 27, 2026, is entered into by and between Prosperity Bancshares, Inc., a Texas corporation (“Prosperity”), and the undersigned shareholder (the “Shareholder”) of Stellar Bancorp, Inc., a Texas corporation (“Stellar”). WHEREAS, subject to the terms and conditions of the Agreement and Plan of Merger (as the sa

January 29, 2026 EX-10.2

DIRECTOR SUPPORT AGREEMENT

Exhibit 10.2 DIRECTOR SUPPORT AGREEMENT THIS DIRECTOR SUPPORT AGREEMENT (this “Agreement”), dated as of January 27, 2026, is made and entered into by and among Prosperity Bancshares, Inc., a Texas corporation (“Prosperity”), Prosperity Bank, a Texas banking association and wholly-owned subsidiary of Prosperity (“Prosperity Bank”), Stellar Bancorp, Inc., a Texas corporation (the “Company”), Stellar

January 29, 2026 EX-2.1

AGREEMENT AND PLAN OF MERGER by and between PROSPERITY BANCSHARES, INC. STELLAR BANCORP, INC. Dated as of January 27, 2026 TABLE OF CONTENTS Article I THE MERGER

Exhibit 2.1 EXECUTION VERSION AGREEMENT AND PLAN OF MERGER by and between PROSPERITY BANCSHARES, INC. and STELLAR BANCORP, INC. Dated as of January 27, 2026 TABLE OF CONTENTS Article I THE MERGER 1.1 The Merger 1 1.2 Closing 2 1.3 Effective Time 2 1.4 Effects of the Merger 2 1.5 Conversion of Stellar Common Stock 2 1.6 Dissenting Shares 3 1.7 Prosperity Common Stock 4 1.8 Treatment of Stellar Equi

January 29, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report: (Date of earliest event reported) January 27, 2026 STELLAR BANCORP,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report: (Date of earliest event reported) January 27, 2026 STELLAR BANCORP, INC. (Exact name of registrant as specified in its charter) Texas 001-38280 20-8339782 (State or other jurisdiction of incorporation) (Commission Fil

January 29, 2026 425

-2-

Filed by Stellar Bancorp, Inc. pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: Stellar Bancorp, Inc. Commission File No.: 001-38280 Date: January 28, 2026 The following are excerpts from the transcript of a conference call held on January 28, 2026. The excerpts contain only those portions of t

January 29, 2026 425

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report: (Date of earliest event reported) January 27, 2026 STELLAR BANCORP,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report: (Date of earliest event reported) January 27, 2026 STELLAR BANCORP, INC. (Exact name of registrant as specified in its charter) Texas 001-38280 20-8339782 (State or other jurisdiction of incorporation) (Commission Fil

January 29, 2026 425

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): January 27, 2026 PROSPERITY BANCS

425 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): January 27, 2026 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Comm

January 28, 2026 EX-99.1

PROSPERITY BANCSHARES, INC.® REPORTS FOURTH QUARTER 2025 EARNINGS

Exhibit 99.1 c PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.® Cullen Zalman Prosperity Bank Plaza Executive Vice President – Banking and Corporate Activities 4295 San Felipe 281.269.7199 Houston, Texas 77027 [email protected] FOR IMMEDIATE RELEASE PROSPERITY BANCSHARES, INC.® REPORTS FOURTH QUARTER 2025 EARNINGS • Announced the signing of a definitive me

January 28, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report: (Date of earliest event reported) January 28, 2026 STELLAR BANCORP,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report: (Date of earliest event reported) January 28, 2026 STELLAR BANCORP, INC. (Exact name of registrant as specified in its charter) Texas 001-38280 20-8339782 (State or other jurisdiction of incorporation) (Commission Fil

January 28, 2026 EX-99.2

Announces the acquisition of January 28, 2026 2 Cautionary Note on Forward Looking Statements This presentation contains statements regarding the proposed transaction between Prosperity Bancshares, Inc. (“Prosperity”) and Stellar Bancorp, Inc. (“Stel

Exhibit 99.2 Announces the acquisition of January 28, 2026 2 Cautionary Note on Forward Looking Statements This presentation contains statements regarding the proposed transaction between Prosperity Bancshares, Inc. (“Prosperity”) and Stellar Bancorp, Inc. (“Stellar”); future financial and operating results; benefits and synergies of the proposed transaction; future opportunities for Prosperity; t

January 28, 2026 425

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report: (Date of earliest event reported) January 28, 2026 STELLAR BANCORP,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report: (Date of earliest event reported) January 28, 2026 STELLAR BANCORP, INC. (Exact name of registrant as specified in its charter) Texas 001-38280 20-8339782 (State or other jurisdiction of incorporation) (Commission Fil

January 28, 2026 EX-99.1

STELLAR BANCORP, INC. REPORTS FOURTH QUARTER 2025 RESULTS

Exhibit 99.1 PRESS RELEASE STELLAR BANCORP, INC. REPORTS FOURTH QUARTER 2025 RESULTS HOUSTON, January 28, 2026 - Stellar Bancorp, Inc. (the “Company” or “Stellar”) (NYSE: STEL) today reported net income of $26.1 million, or diluted earnings per share of $0.51, for the fourth quarter of 2025 and net income of $102.9 million, or diluted earnings per share of $1.99, for the full year 2025. Financial

January 28, 2026 EX-99.2

Announces the acquisition of January 28, 2026 2 Cautionary Note on Forward Looking Statements This presentation contains statements regarding the proposed transaction between Prosperity Bancshares, Inc. (“Prosperity”) and Stellar Bancorp, Inc. (“Stel

Exhibit 99.2 Announces the acquisition of January 28, 2026 2 Cautionary Note on Forward Looking Statements This presentation contains statements regarding the proposed transaction between Prosperity Bancshares, Inc. (“Prosperity”) and Stellar Bancorp, Inc. (“Stellar”); future financial and operating results; benefits and synergies of the proposed transaction; future opportunities for Prosperity; t

January 28, 2026 EX-99.1

PROSPERITY BANCSHARES, INC.® STELLAR BANCORP, INC. ANNOUNCE MERGER

Exhibit 99.1 PRESS RELEASE PROSPERITY BANCSHARES, INC.® AND STELLAR BANCORP, INC. ANNOUNCE MERGER FOR IMMEDIATE RELEASE HOUSTON, TEXAS, January 28, 2026. Prosperity Bancshares, Inc.® (NYSE: PB) (“Prosperity”), the parent company of Prosperity Bank®, and Stellar Bancorp, Inc. (NYSE: STEL) (“Stellar”), the parent holding company of Stellar Bank, headquartered in Houston, Texas, today jointly announc

January 28, 2026 425

* * *

Pursuant to Rule 425 under the Securities Act of 1933, as amended, and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934, as amended Subject Company: Stellar Bancorp, Inc.

January 28, 2026 425

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): January 28, 2026 PROSPERITY BANCS

Filed by Prosperity Bancshares, Inc. pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: Stellar Bancorp, Inc. Commission File Number: 001-38280 Date: January 28, 2026 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF

January 28, 2026 425

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): January 28, 2026 PROSPERITY BANCS

425 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): January 28, 2026 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Comm

January 28, 2026 EX-99.1

PROSPERITY BANCSHARES, INC.® STELLAR BANCORP, INC. ANNOUNCE MERGER

Exhibit 99.1 PRESS RELEASE PROSPERITY BANCSHARES, INC.® AND STELLAR BANCORP, INC. ANNOUNCE MERGER FOR IMMEDIATE RELEASE HOUSTON, TEXAS, January 28, 2026. Prosperity Bancshares, Inc.® (NYSE: PB) (“Prosperity”), the parent company of Prosperity Bank®, and Stellar Bancorp, Inc. (NYSE: STEL) (“Stellar”), the parent holding company of Stellar Bank, headquartered in Houston, Texas, today jointly announc

January 28, 2026 425

- 1 -

Pursuant to Rule 425 under the Securities Act of 1933, as amended, and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934, as amended Subject Company: Stellar Bancorp, Inc.

January 28, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): January 28, 2026 Stellar Bancorp,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): January 28, 2026 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Nu

November 20, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): November 20, 2025 Stellar Bancorp

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): November 20, 2025 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File N

November 20, 2025 EX-99.1

STELLAR BANCORP, INC. ANNOUNCES INCREASE IN QUARTERLY DIVIDEND

Exhibit 99.1 PRESS RELEASE STELLAR BANCORP, INC. ANNOUNCES INCREASE IN QUARTERLY DIVIDEND HOUSTON, November 20, 2025 - (BUSINESS WIRE) – Stellar Bancorp, Inc. (the “Company”) (NYSE: STEL) announced today that its Board of Directors declared a quarterly cash dividend of $0.15 per share of common stock payable on December 31, 2025, to the shareholders of record at the close of business on December 1

October 24, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q S QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 2025 OR £ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO COMMISSION FILE NUMBER: 001-3828

October 24, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): October 24, 2025 Stellar Bancorp,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): October 24, 2025 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Nu

October 24, 2025 EX-99.1

STELLAR BANCORP, INC. REPORTS THIRD QUARTER 2025 RESULTS

Exhibit 99.1 PRESS RELEASE STELLAR BANCORP, INC. REPORTS THIRD QUARTER 2025 RESULTS HOUSTON, October 24, 2025 - Stellar Bancorp, Inc. (the “Company” or “Stellar”) (NYSE: STEL) today reported net income of $25.7 million, or diluted earnings per share of $0.50, for the third quarter of 2025, compared to net income of $26.4 million, or diluted earnings per share of $0.51, for the second quarter of 20

October 24, 2025 EX-99.2

Third Quarter 2025 Earnings Presentation Exhibit 99.2 Forward-Looking Statements and Non-GAAP Financial Measures 2 Certain statements in this press release which are not historical in nature are intended to be, and are hereby identified as, “forward-

stellarinvestorpresentat Third Quarter 2025 Earnings Presentation Exhibit 99.2 Forward-Looking Statements and Non-GAAP Financial Measures 2 Certain statements in this press release which are not historical in nature are intended to be, and are hereby identified as, “forward-looking statements” for purposes of the safe harbor provided by Section 27A of the Securities Act of 1933, as amended, and Se

September 2, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): August 29, 2025 Stellar Bancorp,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): August 29, 2025 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Num

August 28, 2025 EX-99.1

STELLAR BANCORP, INC. ANNOUNCES QUARTERLY DIVIDEND

Exhibit 99.1 PRESS RELEASE STELLAR BANCORP, INC. ANNOUNCES QUARTERLY DIVIDEND HOUSTON, August 28, 2025 - (BUSINESS WIRE) – Stellar Bancorp, Inc. (the “Company”) (NYSE: STEL) announced today that on August 27, 2025, its Board of Directors declared a quarterly cash dividend of $0.14 per share of common stock payable on September 30, 2025, to the shareholders of record at the close of business on Sep

August 28, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): August 27, 2025 Stellar Bancorp,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): August 27, 2025 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Num

July 28, 2025 EX-FILING FEES

Calculation of Filing Fee Table Form S-8 (Form type) Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in its Charter) Table I: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered(1) Propos

Exhibit 107 Calculation of Filing Fee Table Form S-8 (Form type) Stellar Bancorp, Inc.

July 28, 2025 EX-24.1

POWER OF ATTORNEY

Exhibit 24.1 POWER OF ATTORNEY Each person whose signature appears below constitutes and appoints Robert R. Franklin, Jr. and Justin M. Long, and each of them individually, his true or her and lawful attorneys-in-fact and agents, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead to affix his or her signature as director or officer or both, a

July 28, 2025 S-8

As filed with the Securities and Exchange Commission on July 28, 2025

As filed with the Securities and Exchange Commission on July 28, 2025 Registration No.

July 25, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q S QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED JUNE 30, 2025 OR £ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO COMMISSION FILE NUMBER: 001-38280 Ste

July 25, 2025 EX-99.1

STELLAR BANCORP, INC. REPORTS SECOND QUARTER 2025 RESULTS

Exhibit 99.1 PRESS RELEASE STELLAR BANCORP, INC. REPORTS SECOND QUARTER 2025 RESULTS HOUSTON, July 25, 2025 - Stellar Bancorp, Inc. (the “Company” or “Stellar”) (NYSE: STEL) today reported net income of $26.4 million, or diluted earnings per share of $0.51, for the second quarter of 2025, compared to net income of $24.7 million, or diluted earnings per share of $0.46, for the first quarter of 2025

July 25, 2025 EX-99.2

Second Quarter 2025 Earnings Presentation Exhibit 99.2 Forward-Looking Statements and Non-GAAP Financial Measures 2 Certain statements in this press release which are not historical in nature are intended to be, and are hereby identified as, “forward

ex992stellarinvestorpres Second Quarter 2025 Earnings Presentation Exhibit 99.2 Forward-Looking Statements and Non-GAAP Financial Measures 2 Certain statements in this press release which are not historical in nature are intended to be, and are hereby identified as, “forward-looking statements” for purposes of the safe harbor provided by Section 27A of the Securities Act of 1933, as amended, and S

July 25, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): July 25, 2025 Stellar Bancorp, In

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): July 25, 2025 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Numbe

June 16, 2025 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): June 12, 2025 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Numbe

June 3, 2025 CERT

NYSE TEXAS CERTIFICATION

New York Stock Exchange 11 Wall Street New York, NY 10005 Tel: +1 212.656.3000 nyse.com June 3, 2025 Chief, Information Technology Securities and Exchange Commission Division of Corporate Finance 100 F Street, NE MS 3040 Washington, DC 20549 To whom it may concern: The NYSE Texas certifies its approval for listing and registration of the Common stock, par value $0.01 per share, of STELLAR BANCORP,

June 3, 2025 8-A12B

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-A FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 STELLAR BANCORP, INC. (Exact name of registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-A FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 STELLAR BANCORP, INC. (Exact name of registrant as specified in its charter) Texas 20-8339782 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.) 9 G

May 28, 2025 EX-10.1

Amended and Restated Stellar Bancorp, Inc. 2022 Omnibus Incentive Plan

EXHIBIT 10.1 1 AMENDED AND RESTATED STELLAR BANCORP, INC. 2022 OMNIBUS INCENTIVE PLAN (adopted by the Company’s Board of Directors on February 26, 2025) (approved by the Company’s shareholders on May 21, 2025) 1. Purpose; Background. The purpose of the Stellar Bancorp, Inc. 2022 Omnibus Incentive Plan (the “Plan”), is to provide an additional incentive to selected officers, employees, non- employe

May 28, 2025 8-K

Financial Statements and Exhibits, 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): May 21, 2025 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Number

May 22, 2025 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Other Events, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): May 21, 2025 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Number

May 22, 2025 EX-99.1

STELLAR BANCORP, INC. ANNOUNCES INCREASE IN QUARTERLY DIVIDEND

Exhibit 99.1 PRESS RELEASE STELLAR BANCORP, INC. ANNOUNCES INCREASE IN QUARTERLY DIVIDEND HOUSTON, May 22, 2025 - (BUSINESS WIRE) – Stellar Bancorp, Inc. (the “Company”) (NYSE: STEL) announced today that its Board of Directors declared a quarterly cash dividend of $0.14 per share of common stock payable on June 30, 2025, to the shareholders of record at the close of business on June 16, 2025. Abou

May 22, 2025 EX-10.1

Stellar Bancorp, Inc. Executive Severance Plan

Exhibit 10.1 STELLAR BANCORP, INC. EXECUTIVE SEVERANCE PLAN AND SUMMARY PLAN DESCRIPTION 1. Introduction. The purpose of this Stellar Bancorp, Inc. Executive Severance Plan (the “Plan”) is to provide assurances of specified severance benefits to eligible employees of Stellar Bancorp, Inc. and its subsidiaries and affiliates (collectively, the “Company Group”) whose employment is terminated under c

April 25, 2025 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): April 25, 2025 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Numb

April 25, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q S QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2025 OR £ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO COMMISSION FILE NUMBER: 001-38280 St

April 25, 2025 EX-10.1

Stellar Bancorp, Inc. Form of Performance Share Award Agreement

Exhibit 10.1 PERFORMANCE-BASED RESTRICTED STOCK UNIT AWARD GRANT NOTICE STELLAR BANCORP, INC. 2022 OMNIBUS INCENTIVE PLAN Stellar Bancorp, Inc., a Texas corporation (the “Company” or “Stellar”), pursuant to its 2022 Omnibus Incentive Plan (the “Plan”), hereby grants to the individual listed below (“Participant”), this award (“Award”) of performance-based restricted stock units (the “PRSUs”). This

April 25, 2025 EX-99.1

STELLAR BANCORP, INC. REPORTS FIRST QUARTER 2025 RESULTS

Exhibit 99.1 PRESS RELEASE STELLAR BANCORP, INC. REPORTS FIRST QUARTER 2025 RESULTS HOUSTON, April 25, 2025 - Stellar Bancorp, Inc. (the “Company” or “Stellar”) (NYSE: STEL) today reported net income of $24.7 million or diluted earnings per share of $0.46, for the first quarter of 2025, compared to net income of $25.2 million, or diluted earnings per share of $0.47, for the fourth quarter of 2024.

April 25, 2025 EX-10.2

Stellar Bancorp, Inc. Form of Restricted Stock Award Agreement

Exhibit 10.2 RESTRICTED STOCK AWARD GRANT NOTICE STELLAR BANCORP, INC. 2022 OMNIBUS INCENTIVE PLAN Stellar Bancorp, Inc., a Texas corporation (the “Company” or “Stellar”), pursuant to its 2022 Omnibus Incentive Plan (the “Plan”), hereby grants to the individual listed below (“Participant”), the award (“Award”) of shares of restricted stock set forth below. This Award is subject to all of the terms

April 25, 2025 EX-99.2

First Quarter 2025 Earnings Presentation Exhibit 99.2 Forward-Looking Statements and Non-GAAP Financial Measures 2 Certain statements in this press release which are not historical in nature are intended to be, and are hereby identified as, “forward-

ex992q12025earningsprese First Quarter 2025 Earnings Presentation Exhibit 99.2 Forward-Looking Statements and Non-GAAP Financial Measures 2 Certain statements in this press release which are not historical in nature are intended to be, and are hereby identified as, “forward-looking statements” for purposes of the safe harbor provided by Section 27A of the Securities Act of 1933, as amended, and Se

April 23, 2025 EX-99.1

STELLAR BANCORP, INC. ANNOUNCES NEW SHARE REPURCHASE PROGRAM AND FEDERAL RESERVE MEMBERSHIP

PRESS RELEASE STELLAR BANCORP, INC. ANNOUNCES NEW SHARE REPURCHASE PROGRAM AND FEDERAL RESERVE MEMBERSHIP HOUSTON, April 23, 2025 - (BUSINESS WIRE) – Stellar Bancorp, Inc. (the “Company”) (NYSE: STEL) today announced that its Board of Directors authorized a new share repurchase program under which the Company may repurchase up to $65 million of the Company’s common stock through May 31, 2026 (the

April 23, 2025 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): April 23, 2025 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Numb

April 10, 2025 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.    )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.    ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨  Preliminary Proxy Statement ¨  Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨

April 10, 2025 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.    )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.    ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule

April 10, 2025 ARS

ARS

Visit STELLAR.BANK 713 . 499.1800 NMLS #451312 2024 Annual ReportWe empower people to thrive. STELLAR BANCORP, INC. DIRECTORS John Beckworth The University of Texas School of Law Michael A. Havard Havard Law Firm Steven F. Retzloff Stellar Bancorp, Inc. Tymothi O. Tombar Arcadius Capital Partners Cynthia A. Dopjera Third Party Resources, Inc. Frances H. Jeter FGS Global Inc. Fred S. Robertson FR R

March 27, 2025 PRE 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.    )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.    ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☒ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule

March 4, 2025 EX-99.1

2025 RBC Capital Markets Global Financial Institutions Conference Investor Presentation March 2025 Exhibit 99.1 Forward-Looking Statements and Non-GAAP Financial Measures 2 Certain statements in this press release which are not historical in nature a

stellarinvestorpresentat 2025 RBC Capital Markets Global Financial Institutions Conference Investor Presentation March 2025 Exhibit 99.

March 4, 2025 EX-3.1

Amended and Restated Bylaws of Stellar Bancorp, Inc. (incorporated herein by reference to Exhibit 3.1 to the Company’s Current Report on Form 8-K filed on March 4, 2025

AMENDED AND RESTATED BYLAWS OF STELLAR BANCORP, INC. TABLE OF CONTENTS ARTICLE I. – NAME AND OFFICES .......................................................................................... 1 1.01 Registered Office Address .............................................................................................. 1 1.02 Other Offices ...........................................................

March 4, 2025 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934` Date of Report (Date of earliest event Reported): February 26, 2025 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File

March 4, 2025 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): March 4, 2025 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Numbe

March 3, 2025 10-K

21 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents 21 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

March 3, 2025 EX-19.1

Insider Trading Policy

Exhibit 19.1 Stellar Bancorp, Inc. Insider Trading Policy (As Amended February 26, 2025) This Insider Trading Policy (this “Policy”) describes the standards of Stellar Bancorp, Inc. and its subsidiaries (the “Company”) on trading, and causing the trading of, the Company’s securities or securities of certain other publicly traded companies while in possession of confidential information. This Polic

March 3, 2025 8-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K/A CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): January 30, 2025 Stellar Bancor

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K/A CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): January 30, 2025 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File

March 3, 2025 EX-21.1

Subsidiaries of Stellar Bancorp, Inc.

Exhibit 21.1 STELLAR BANCORP, INC. LIST OF SUBSIDIARIES AS OF MARCH 3, 2025 Direct Subsidiaries Jurisdiction of Organization Parent Entity Stellar Bank Texas Stellar Bancorp, Inc. Farmers & Merchants Capital Trust II Delaware Stellar Bancorp, Inc. Farmers & Merchants Capital Trust III Delaware Stellar Bancorp, Inc. Indirect Subsidiaries Jurisdiction of Organization Parent Entity STEL Insurance Ser

February 26, 2025 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934` Date of Report (Date of earliest event Reported): February 26, 2025 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File

February 26, 2025 EX-99.1

STELLAR BANCORP, INC. ANNOUNCES INCREASE IN QUARTERLY DIVIDEND

Exhibit 99.1 PRESS RELEASE STELLAR BANCORP, INC. ANNOUNCES INCREASE IN QUARTERLY DIVIDEND HOUSTON, February 26, 2025 - (BUSINESS WIRE) – Stellar Bancorp, Inc. (the “Company”) (NYSE: STEL) announced today that its Board of Directors declared a quarterly cash dividend of $0.14 per share of common stock payable on March 31, 2025, to the shareholders of record at the close of business on March 17, 202

January 30, 2025 EX-99.2

Fourth Quarter 2024 Earnings Presentation Exhibit 99.2 Forward-Looking Statements and Non-GAAP Financial Measures 2 Certain statements in this press release which are not historical in nature are intended to be, and are hereby identified as, “forward

Fourth Quarter 2024 Earnings Presentation Exhibit 99.2 Forward-Looking Statements and Non-GAAP Financial Measures 2 Certain statements in this press release which are not historical in nature are intended to be, and are hereby identified as, “forward-looking statements” for purposes of the safe harbor provided by Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securit

January 30, 2025 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): January 30, 2025 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Nu

January 30, 2025 EX-99.1

STELLAR BANCORP, INC. REPORTS FOURTH QUARTER AND FULL YEAR 2024 RESULTS

Exhibit 99.1 PRESS RELEASE STELLAR BANCORP, INC. REPORTS FOURTH QUARTER AND FULL YEAR 2024 RESULTS HOUSTON, January 30, 2025 - Stellar Bancorp, Inc. (the “Company” or “Stellar”) (NYSE: STEL) today reported net income of $27.8 million, or diluted earnings per share of $0.52, for the fourth quarter of 2024 and net income of $117.6 million, or diluted earnings per share of $2.20, for the full year 20

January 22, 2025 LETTER

LETTER

January 22, 2025 Paul P. Egge Chief Financial Officer Stellar Bancorp, Inc. 9 Greenway Plaza, Suite 110 Houston, Texas 77046 Re: Stellar Bancorp, Inc. Form 10-K for the Fiscal Year Ended December 31, 2023 File No. 001-38280 Dear Paul P. Egge: We have completed our review of your filing. We remind you that the company and its management are responsible for the accuracy and adequacy of their disclos

January 17, 2025 CORRESP

STELLAR BANCORP, INC. January 17, 2025

STELLAR BANCORP, INC. January 17, 2025 VIA EDGAR Securities and Exchange Commission Division of Corporate Finance 100 F Street, N.E. Washington, D.C. 20549 Re: Stellar Bancorp, Inc. Form 10-K for the Fiscal Year Ended December 31, 2023 File No. 001-38280 Dear Mr. Makhdoom and Mr. Henderson: This letter sets forth the response of Stellar Bancorp, Inc. (the “Company”), a Texas corporation, to the co

January 10, 2025 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): January 6, 2025 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Num

December 19, 2024 LETTER

LETTER

December 19, 2024 Paul P. Egge Chief Financial Officer Stellar Bancorp, Inc. 9 Greenway Plaza, Suite 110 Houston, Texas 77046 Re: Stellar Bancorp, Inc. Form 10-K for the Fiscal Year Ended December 31, 2023 File No. 001-38280 Dear Paul P. Egge: We have limited our review of your filing to the financial statements and related disclosures and have the following comment. Please respond to this letter

December 18, 2024 EX-10.2

Renewal Promissory Note

Exhibit 10.2 RENEWAL PROMISSORY NOTE (Floating Rate) $75,000,000.00 December 13, 2024 For value received, STELLAR BANCORP, INC., a Texas corporation (“Borrower,” whether one or more), jointly and severally (if more than one) promises to pay to the order of FROST BANK, a Texas state bank (“Lender”), at P.O. Box 34746, San Antonio, Texas 78265, or at such other address as Lender shall from time to t

December 18, 2024 EX-10.1

Amended Loan Agreement

Exhibit 10.1 FIRST AMENDMENT TO THIRD AMENDED AND RESTATED LOAN AGREEMENT THIS FIRST AMENDMENT TO THIRD AMENDED AND RESTATED LOAN AGREEMENT (this “First Amendment”) is made and entered into as of December 13, 2024 (the “Effective Date”), by and between STELLAR BANCORP, INC., a Texas corporation (the “Borrower”), and FROST BANK, a Texas state bank (“Lender”). RECITALS: WHEREAS, on or about December

December 18, 2024 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): December 13, 2024 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File N

November 21, 2024 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934` Date of Report (Date of earliest event Reported): November 21, 2024 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File

November 21, 2024 EX-99.1

STELLAR BANCORP, INC. ANNOUNCES INCREASE IN QUARTERLY DIVIDEND

Exhibit 99.1 PRESS RELEASE STELLAR BANCORP, INC. ANNOUNCES INCREASE IN QUARTERLY DIVIDEND HOUSTON, November 21, 2024 - (BUSINESS WIRE) – Stellar Bancorp, Inc. (the “Company”) (NYSE: STEL) announced today that its Board of Directors declared a quarterly cash dividend of $0.14 per share of common stock payable on December 31, 2024, to the shareholders of record at the close of business on December 1

October 25, 2024 EX-99.1

STELLAR BANCORP, INC. REPORTS THIRD QUARTER 2024 RESULTS

Exhibit 99.1 PRESS RELEASE STELLAR BANCORP, INC. REPORTS THIRD QUARTER 2024 RESULTS HOUSTON, October 25, 2024 - Stellar Bancorp, Inc. (the “Company” or “Stellar”) (NYSE: STEL) today reported net income of $33.9 million, or diluted earnings per share of $0.63, for the third quarter of 2024 compared to net income of $29.8 million, or diluted earnings per share of $0.56, for the second quarter of 202

October 25, 2024 EX-99.2

Third Quarter 2024 Earnings Presentation Exhibit 99.2 Forward-Looking Statements and Non-GAAP Financial Measures 2 Certain statements in this press release which are not historical in nature are intended to be, and are hereby identified as, “forward-

Third Quarter 2024 Earnings Presentation Exhibit 99.2 Forward-Looking Statements and Non-GAAP Financial Measures 2 Certain statements in this press release which are not historical in nature are intended to be, and are hereby identified as, “forward-looking statements” for purposes of the safe harbor provided by Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securiti

October 25, 2024 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): October 25, 2024 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Nu

October 25, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q S QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 2024 OR £ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO COMMISSION FILE NUMBER: 001-3828

October 25, 2024 8-K/A

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K/A CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): October 25, 2024 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File

October 25, 2024 EX-99.3

Stellar Bancorp, Inc. Announces Redemption of Subordinated Notes

Exhibit 99.3 PRESS RELEASE Stellar Bancorp, Inc. Announces Redemption of Subordinated Notes HOUSTON, October 25, 2024 - Stellar Bancorp, Inc. (the “Company”) (NYSE: STEL) today announced the intention of Stellar Bank, its wholly-owned subsidiary (“the Bank”), to redeem all of the Bank’s $40.0 million aggregate principal amount of Fixed-to-Floating Rate Subordinated Notes due December 15, 2027 (“th

October 25, 2024 EX-99.3

Stellar Bancorp, Inc. Announces Redemption of Subordinated Notes

Exhibit 99.3 PRESS RELEASE Stellar Bancorp, Inc. Announces Redemption of Subordinated Notes HOUSTON, October 25, 2024 - Stellar Bancorp, Inc. (the “Company”) (NYSE: STEL) today announced the intention of Stellar Bank, its wholly-owned subsidiary (“the Bank”), to redeem all of the Bank’s $40.0 million aggregate principal amount of Fixed-to-Floating Rate Subordinated Notes due December 15, 2027 (“th

October 25, 2024 EX-99.2

Third Quarter 2024 Earnings Presentation Exhibit 99.2 Forward-Looking Statements and Non-GAAP Financial Measures 2 Certain statements in this press release which are not historical in nature are intended to be, and are hereby identified as, “forward-

Third Quarter 2024 Earnings Presentation Exhibit 99.2 Forward-Looking Statements and Non-GAAP Financial Measures 2 Certain statements in this press release which are not historical in nature are intended to be, and are hereby identified as, “forward-looking statements” for purposes of the safe harbor provided by Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securiti

October 25, 2024 EX-99.1

STELLAR BANCORP, INC. REPORTS THIRD QUARTER 2024 RESULTS

Exhibit 99.1 PRESS RELEASE STELLAR BANCORP, INC. REPORTS THIRD QUARTER 2024 RESULTS HOUSTON, October 25, 2024 - Stellar Bancorp, Inc. (the “Company” or “Stellar”) (NYSE: STEL) today reported net income of $33.9 million, or diluted earnings per share of $0.63, for the third quarter of 2024 compared to net income of $29.8 million, or diluted earnings per share of $0.56, for the second quarter of 202

August 22, 2024 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934` Date of Report (Date of earliest event Reported): August 22, 2024 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Nu

August 22, 2024 EX-99.1

STELLAR BANCORP, INC. DECLARES QUARTERLY DIVIDEND

Exhibit 99.1 PRESS RELEASE STELLAR BANCORP, INC. DECLARES QUARTERLY DIVIDEND HOUSTON, August 22, 2024 - (BUSINESS WIRE) – Stellar Bancorp, Inc. (the “Company”) (NYSE: STEL) today announced that on August 22, 2024, its Board of Directors declared a quarterly cash dividend in the amount of $0.13 per share of common stock. The dividend will be payable on September 30, 2024 to the Company’s shareholde

July 26, 2024 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): July 26, 2024 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Numbe

July 26, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q S QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED JUNE 30, 2024 OR £ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO COMMISSION FILE NUMBER: 001-38280 Ste

July 26, 2024 EX-99.1

STELLAR BANCORP, INC. REPORTS SECOND QUARTER 2024 RESULTS

Exhibit 99.1 PRESS RELEASE STELLAR BANCORP, INC. REPORTS SECOND QUARTER 2024 RESULTS HOUSTON, July 26, 2024 - Stellar Bancorp, Inc. (the “Company” or “Stellar”) (NYSE: STEL) today reported net income of $29.8 million, or diluted earnings per share of $0.56, for the second quarter of 2024 compared to net income of $26.1 million, or diluted earnings per share of $0.49, for the first quarter of 2024.

July 26, 2024 EX-10.2

Stellar Bancorp, Inc. Form of Restricted Stock Award Agreement

Exhibit 10.2 RESTRICTED STOCK AWARD GRANT NOTICE STELLAR BANCORP, INC. 2022 OMNIBUS INCENTIVE PLAN Stellar Bancorp, Inc., a Texas corporation (the “Company” or “Stellar”), pursuant to its 2022 Omnibus Incentive Plan (the “Plan”), hereby grants to the individual listed below (“Participant”), the award (“Award”) of shares of restricted stock set forth below. This Award is subject to all of the terms

July 26, 2024 EX-99.2

Second Quarter 2024 Earnings Presentation Exhibit 99.2 Forward-Looking Statements and Non-GAAP Financial Measures 2 Certain statements in this press release which are not historical in nature are intended to be, and are hereby identified as, “forward

Second Quarter 2024 Earnings Presentation Exhibit 99.2 Forward-Looking Statements and Non-GAAP Financial Measures 2 Certain statements in this press release which are not historical in nature are intended to be, and are hereby identified as, “forward-looking statements” for purposes of the safe harbor provided by Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securit

July 26, 2024 EX-10.1

Stellar Bancorp, Inc. Form of Performance Share Award Agreement

Exhibit 10.1 PERFORMANCE-BASED RESTRICTED STOCK UNIT AWARD GRANT NOTICE STELLAR BANCORP, INC. 2022 OMNIBUS INCENTIVE PLAN Stellar Bancorp, Inc., a Texas corporation (the “Company” or “Stellar”), pursuant to its 2022 Omnibus Incentive Plan (the “Plan”), hereby grants to the individual listed below (“Participant”), this award (“Award”) of performance-based restricted stock units (the “PRSUs”). This

June 5, 2024 8-K

Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): June 4, 2024 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Number

May 24, 2024 144

144

144 0001774788 XXXXXXXX LIVE 0001473844 Stellar Bancorp, Inc. 001-38280 9 GREENWAY PLAZA, SUITE 110 HOUSTON TX 77046 (713) 210-7600 Long Justin M Director Common Charles Schwab Corp. 3000 Schwab Way Wesrlake TX 76262 5000 114500.00 53556949 05/24/2024 NYSE Common 04/30/2019 Stock Plan Issuer N 5000 04/30/2019 N/A Y 05/24/2024 JUSTIN M. LONG

May 23, 2024 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934` Date of Report (Date of earliest event Reported): May 23, 2024 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Numbe

May 23, 2024 EX-99.1

STELLAR BANCORP, INC. DECLARES QUARTERLY DIVIDEND AND NEW SHARE REPURCHASE PROGRAM

Exhibit 99.1 PRESS RELEASE STELLAR BANCORP, INC. DECLARES QUARTERLY DIVIDEND AND NEW SHARE REPURCHASE PROGRAM HOUSTON, May 23, 2024 - (BUSINESS WIRE) – Stellar Bancorp, Inc. (the “Company”) (NYSE: STEL) today announced that on May 23, 2024, its Board of Directors declared a quarterly cash dividend in the amount of $0.13 per share of common stock. The dividend will be payable on June 28, 2024 to th

April 30, 2024 ARS

ARS

Dallas North Tollway 12 289 Lovers Ln Walnut Hill Ln DALLAS W W W.STELL AR. BANK 713 . 499.1800 NML S #4 51312 We’re from here. We invest here. We know how to get it done for you here. 2023 Annual ReportWe empower people to thrive. Stellar bankers set the standard for responsive, relationship-based community banking. We have the expertise, resources and personal focus to out-service the big banks

April 29, 2024 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.    )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.    ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule

April 26, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): April 26, 2024 Stellar Bancorp, I

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): April 26, 2024 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Numb

April 26, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q S QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2024 OR £ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO COMMISSION FILE NUMBER: 001-38280 St

April 26, 2024 EX-99.2

First Quarter 2024 Earnings Presentation Exhibit 99.2 Forward-Looking Statements and Non-GAAP Financial Measures 2 Certain statements in this press release which are not historical in nature are intended to be, and are hereby identified as, “forward-

a992stellarq12024earning First Quarter 2024 Earnings Presentation Exhibit 99.2 Forward-Looking Statements and Non-GAAP Financial Measures 2 Certain statements in this press release which are not historical in nature are intended to be, and are hereby identified as, “forward-looking statements” for purposes of the safe harbor provided by Section 27A of the Securities Act of 1933, as amended, and Se

April 26, 2024 EX-10.2

Executive Employment Agreement dated March 1, 2023, by and among Stellar Bank, Stellar Bancorp, Inc. and Justin M. Long

EXECUTIVE EMPLOYMENT AGREEMENT Exhibit 10.2 THIS EXECUTIVE EMPLOYMENT AGREEMENT (this “Agreement”) is made and entered into, and effective as of, this 1st day of March, 2023, by and between Allegiance Bank (including its successors and assigns, the “Bank”), and Justin M. Long, an individual who resides in the State of Texas (“Executive”) and Stellar Bancorp, Inc., a Texas corporation and sole pare

April 26, 2024 EX-99.1

STELLAR BANCORP, INC. REPORTS FIRST QUARTER 2024 RESULTS

Exhibit 99.1 PRESS RELEASE STELLAR BANCORP, INC. REPORTS FIRST QUARTER 2024 RESULTS HOUSTON, April 26, 2024 - Stellar Bancorp, Inc. (the “Company” or “Stellar”) (NYSE: STEL) today reported net income of $26.1 million, or diluted earnings per share of $0.49, for the first quarter of 2024 compared to net income of $27.3 million, or diluted earnings per share of $0.51, for the fourth quarter of 2023.

April 26, 2024 EX-10.1

Stellar Bancorp, Inc. Form of Performance Share Award Agreement

Exhibit 10.1 PERFORMANCE-BASED RESTRICTED STOCK UNIT AWARD GRANT NOTICE STELLAR BANCORP, INC. 2022 OMNIBUS INCENTIVE PLAN Stellar Bancorp, Inc., a Texas corporation (the “Company” or “Stellar”), pursuant to its 2022 Omnibus Incentive Plan (the “Plan”), hereby grants to the individual listed below (“Participant”), this award (“Award”) of performance-based restricted stock units (the “PRSUs”). This

February 29, 2024 EX-24.1

Power of Attorney

Exhibit 24.1 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Robert R. Franklin, Jr., Paul P. Egge and Justin M. Long, and each of them, his or her true and lawful attorneys-in-fact and agents, and with power of substitution and re-substitution, for him or her and in his or her name, place and stead, and in any and all capac

February 29, 2024 EX-21.1

Subsidiaries of Stellar Bancorp, Inc.

Exhibit 21.1 STELLAR BANCORP, INC. LIST OF SUBSIDIARIES AS OF FEBRUARY 29, 2024 Direct Subsidiaries Jurisdiction of Organization Parent Entity Stellar Bank Texas Stellar Bancorp, Inc. Farmers & Merchants Capital Trust II Delaware Stellar Bancorp, Inc. Farmers & Merchants Capital Trust III Delaware Stellar Bancorp, Inc. Indirect Subsidiaries Jurisdiction of Organization Parent Entity ABTX Financial

February 29, 2024 EX-4.2

Description of Registrant’s Securities

Exhibit 4.2 DESCRIPTION OF REGISTRANT’S SECURITIES As of December 31, 2023, Stellar Bancorp, Inc. (the “Company”) had one class of securities registered under Section 12 of the Securities Exchange Act of 1934 (the “Exchange Act”), the Company’s common stock. Description of Common Stock The following is a summary and does not describe every right, term or condition of owning the Company’s common st

February 29, 2024 EX-97.1

Policy for the Recovery of Erroneously Awarded Compensation

Exhibit 97.1 POLICY FOR THE RECOVERY OF ERRONEOUSLY AWARDED COMPENSATION 1.Purpose. The purpose of this Policy is to describe the circumstances in which Executive Officers will be required to repay or return Erroneously Awarded Compensation to members of the Company Group. Each Executive Officer shall be required to sign and return to the Company the Acknowledgement Form attached hereto as Exhibit

February 29, 2024 10-K

21 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents 21 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

February 23, 2024 EX-99.01

STELLAR BANCORP, INC. DECLARES QUARTERLY DIVIDEND

Exhibit 99.1 PRESS RELEASE STELLAR BANCORP, INC. DECLARES QUARTERLY DIVIDEND HOUSTON, February 23, 2024 - (BUSINESS WIRE) – Stellar Bancorp, Inc. (the “Company”) (NYSE: STEL) today announced that on February 22, 2024, its Board of Directors declared a quarterly cash dividend in the amount of $0.13 per share of common stock. The dividend will be payable on March 29, 2024 to the Company’s shareholde

February 23, 2024 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934` Date of Report (Date of earliest event Reported): February 22, 2024 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File

February 13, 2024 SC 13G/A

STEL / Stellar Bancorp, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv01993-stellarbancorpinc.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 1)* Name of issuer: Stellar Bancorp Inc Title of Class of Securities: Common Stock CUSIP Number: 858927106 Date of Event Which Requires Filing of this Statement: December 29, 2023 Check the appropriate box to design

January 26, 2024 EX-99.01

STELLAR BANCORP, INC. REPORTS FOURTH QUARTER 2023 RESULTS

Exhibit 99.1 PRESS RELEASE STELLAR BANCORP, INC. REPORTS FOURTH QUARTER 2023 RESULTS HOUSTON, January 26, 2024 - Stellar Bancorp, Inc. (the “Company” or “Stellar”) (NYSE: STEL) today reported net income of $27.3 million, or diluted earnings per share of $0.51, for the fourth quarter 2023 and net income of $130.5 million, or diluted earnings per share of $2.45, for the year ended December 31, 2023.

January 26, 2024 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): January 26, 2024 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Nu

January 26, 2024 EX-99.02

Fourth Quarter 2023 Earnings Presentation Exhibit 99.2 Forward-Looking Statements and Non-GAAP Financial Measures 2 Certain statements in this press release which are not historical in nature are intended to be, and are hereby identified as, “forward

Fourth Quarter 2023 Earnings Presentation Exhibit 99.2 Forward-Looking Statements and Non-GAAP Financial Measures 2 Certain statements in this press release which are not historical in nature are intended to be, and are hereby identified as, “forward-looking statements” for purposes of the safe harbor provided by Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securit

January 23, 2024 SC 13G/A

STEL / Stellar Bancorp, Inc. / BlackRock Inc. Passive Investment

SC 13G/A 1 us8589271068012324.txt us8589271068012324.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 1) Stellar Bancorp, Inc. - (Name of Issuer) Common Stock - (Title of Class of Securities) 858927106 - (CUSIP Number) December 31, 2023 - (Date of Event Which Requires Filing of this Statement) Check the appropriate

November 16, 2023 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934` Date of Report (Date of earliest event Reported): November 15, 2023 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File

November 16, 2023 EX-99.1

STELLAR BANCORP, INC. DECLARES QUARTERLY DIVIDEND

Exhibit 99.1 PRESS RELEASE STELLAR BANCORP, INC. DECLARES QUARTERLY DIVIDEND HOUSTON, November 16, 2023 - (BUSINESS WIRE) – Stellar Bancorp, Inc. (the “Company”) (NYSE: STEL) today announced that on November 15, 2023, its Board of Directors declared a quarterly cash dividend in the amount of $0.13 per share of common stock. The dividend will be payable on December 29, 2023 to the Company’s shareho

November 3, 2023 EX-10.1

Second Amended and Restated Employment Agreement, dated October 31, 2023, between Stellar Bank and Travis Jaggers

Exhibit 10.1 SECOND AMENDED AND RESTATED EMPLOYMENT AGREEMENT This SECOND AMENDED AND RESTATED EMPLOYMENT AGREEMENT (the “Agreement”) is made and shall be effective as of the 31th day of October, 2023 (the “Effective Date”), by and among STELLAR BANK, having a principal place of business at 9 Greenway Plaza, Suite 110, Houston, TX 77046 (together with its successors and assigns, the “Bank”), and T

November 3, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q S QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 2023 OR £ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO COMMISSION FILE NUMBER: 001-3828

November 3, 2023 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): October 30, 2023 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Nu

October 27, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): October 27, 2023 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Nu

October 27, 2023 EX-99.2

Third Quarter 2023 Earnings Presentation Exhibit 99.2 Forward-Looking Statements and Non-GAAP Financial Measures 2 Certain statements in this press release which are not historical in nature are intended to be, and are hereby identified as, “forward-

Third Quarter 2023 Earnings Presentation Exhibit 99.2 Forward-Looking Statements and Non-GAAP Financial Measures 2 Certain statements in this press release which are not historical in nature are intended to be, and are hereby identified as, “forward-looking statements” for purposes of the safe harbor provided by Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securiti

October 27, 2023 EX-99.1

STELLAR BANCORP, INC. REPORTS THIRD QUARTER 2023 RESULTS

Exhibit 99.1 PRESS RELEASE STELLAR BANCORP, INC. REPORTS THIRD QUARTER 2023 RESULTS HOUSTON, October 27, 2023 - Stellar Bancorp, Inc. (the “Company” or “Stellar”) (NYSE: STEL) today reported net income of $30.9 million and diluted earnings per share of $0.58 for the third quarter 2023 compared to net income of $35.2 million and diluted earnings per share of $0.66 for the second quarter 2023. “We a

August 21, 2023 EX-99.1

STELLAR BANCORP, INC. DECLARES QUARTERLY DIVIDEND

Exhibit 99.1 PRESS RELEASE STELLAR BANCORP, INC. DECLARES QUARTERLY DIVIDEND HOUSTON, August 21, 2023 - (GLOBE NEWSWIRE) – Stellar Bancorp, Inc. (the “Company”) (NYSE: STEL) today announced that on August 17, 2023, its Board of Directors declared a quarterly cash dividend in the amount of $0.13 per share of common stock. The dividend will be payable on September 29, 2023 to the Company’s sharehold

August 21, 2023 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): August 17, 2023 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Num

July 28, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): July 28, 2023 Stellar Bancorp, In

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): July 28, 2023 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Numbe

July 28, 2023 EX-99.1

STELLAR BANCORP, INC. REPORTS SECOND QUARTER 2023 RESULTS

Exhibit 99.1 PRESS RELEASE STELLAR BANCORP, INC. REPORTS SECOND QUARTER 2023 RESULTS HOUSTON, July 28, 2023 - Stellar Bancorp, Inc. (the “Company” or “Stellar”) (NYSE: STEL) today reported net income of $35.2 million and diluted earnings per share of $0.66 for the second quarter 2023 compared to net income of $37.1 million and diluted earnings per share of $0.70 for the first quarter 2023. “We are

July 28, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q S QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED JUNE 30, 2023 OR £ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO COMMISSION FILE NUMBER: 001-38280 Ste

July 28, 2023 EX-99.2

Second Quarter 2023 Earnings Presentation Exhibit 99.2 Forward-Looking Statements and Non-GAAP Financial Measures 2 Certain statements in this press release which are not historical in nature are intended to be, and are hereby identified as, “forward

a992secondquarter2023ear Second Quarter 2023 Earnings Presentation Exhibit 99.2 Forward-Looking Statements and Non-GAAP Financial Measures 2 Certain statements in this press release which are not historical in nature are intended to be, and are hereby identified as, “forward-looking statements” for purposes of the safe harbor provided by Section 27A of the Securities Act of 1933, as amended, and S

July 24, 2023 EX-99.1

Cynthia Dopjera Appointed to Board of Directors of Stellar Bancorp, Inc.

Exhibit 99.1 PRESS RELEASE Cynthia Dopjera Appointed to Board of Directors of Stellar Bancorp, Inc. HOUSTON, TX – July 24, 2023 – Stellar Bancorp, Inc. (the “Company” or “Stellar”)(NYSE:STEL) today announced the election of Cynthia Dopjera to the Board of Directors of the Company effective July 20, 2023. The election of Ms. Dopjera as a Class II director fills an existing vacancy. The Company has

July 24, 2023 8-K

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): July 20, 2023 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Numbe

June 9, 2023 25

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 25 NOTIFICATION OF REMOVAL FROM LISTING AND/OR REGISTRATION UNDER SECTION 12(b) OF THE SECURITIES EXCHANGE ACT OF 1934. Commission File Number: 001-38280 STELLAR BANCORP, IN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 25 NOTIFICATION OF REMOVAL FROM LISTING AND/OR REGISTRATION UNDER SECTION 12(b) OF THE SECURITIES EXCHANGE ACT OF 1934. Commission File Number: 001-38280 STELLAR BANCORP, INC. The Nasdaq Stock Market LLC (Exact name of Issuer as specified in its charter, and name of Exchange where security is listed and/or registered) 9 G

May 31, 2023 CERT

NYSE CERTIFICATION

New York Stock Exchange 11 Wall Street New York, NY 10005 Tel: +1 212.656.3000 nyse.com May 31, 2023 Chief, Information Technology Securities and Exchange Commission Division of Corporate Finance 100 F Street, NE MS 3040 Washington, DC 20549 To whom it may concern: The New York Stock Exchange certifies its approval for listing and registration of the Common Stock, par value $.01 per share, of Stel

May 30, 2023 EX-99.1

STELLAR BANCORP, INC. ANNOUNCES TRANSFER OF LISTING OF COMMON STOCK TO THE NEW YORK STOCK EXCHANGE

Exhibit 99.1 PRESS RELEASE STELLAR BANCORP, INC. ANNOUNCES TRANSFER OF LISTING OF COMMON STOCK TO THE NEW YORK STOCK EXCHANGE HOUSTON, May 30, 2023 - Stellar Bancorp, Inc. (the “Company”) (NASDAQ: STEL) announced today that it is transferring the listing of its common stock to the New York Stock Exchange (“NYSE”) from The Nasdaq Stock Market LLC (“Nasdaq”). Stellar common stock is expected to begi

May 30, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): May 30, 2023 Stellar Bancorp, Inc

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): May 30, 2023 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Number

May 30, 2023 8-A12B

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-A FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 Stellar Bancorp, Inc. (Exact Name of Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-A FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Number) (I.R.S. Employer Identifi

May 26, 2023 EX-99.1

STELLAR BANCORP, INC. DECLARES QUARTERLY DIVIDEND AND EXPANDED SHARE REPURCHASE PROGRAM

Exhibit 99.1 PRESS RELEASE STELLAR BANCORP, INC. DECLARES QUARTERLY DIVIDEND AND EXPANDED SHARE REPURCHASE PROGRAM HOUSTON, May 26, 2023 - (GLOBE NEWSWIRE) – Stellar Bancorp, Inc. (the “Company”) (Nasdaq: STEL) today announced that on May 25, 2023, its Board of Directors declared a quarterly cash dividend in the amount of $0.13 per share of common stock. The dividend will be payable on June 30, 20

May 26, 2023 EX-25.2

Form T-1 Statement of Eligibility under the Trust Indenture Act of 1939, as amended, of the Subordinated Indenture Trustee.

Exhibit 25.2 securities and exchange commission Washington, D.C. 20549 FORM T-1 Statement of Eligibility Under The Trust Indenture Act of 1939 of a Corporation Designated to Act as Trustee Check if an Application to Determine Eligibility of a Trustee Pursuant to Section 305(b)(2) ¨ U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION (Exact name of Trustee as specified in its charter) 91-1821036 I.R.S. E

May 26, 2023 EX-4.6

Second Supplemental Indenture, dated as of September 30, 2022, by and among U.S. Bank Trust Company, National Association, a national banking association, as Trustee, CBTX, Inc., as the successor to Allegiance Bancshares, Inc., and Allegiance Bancshares, Inc.

Exhibit 4.6 SECOND SUPPLEMENTAL INDENTURE THIS SECOND SUPPLEMENTAL INDENTURE dated as of September 30, 2022 is by and among U.S. Bank Trust Company, National Association, a national banking association, as Trustee (herein, together with its successors in interest, the “Trustee”), CBTX, Inc., a Texas corporation (the “Successor Company”), and Allegiance Bancshares, Inc., a Texas corporation (the “C

May 26, 2023 S-3ASR

As filed with the Securities and Exchange Commission on May 26, 2023

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on May 26, 2023 Registration No.

May 26, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): May 25, 2023 Stellar Bancorp, Inc

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): May 25, 2023 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Number

May 26, 2023 EX-4.3

Form of Indenture for Senior Debt Securities.

Exhibit 4.3 STELLAR BANCORP, INC., Issuer To Trustee SENIOR DEBT INDENTURE Dated as of , 20 Senior Debt Securities Reconciliation and tie between Trust Indenture Act of 1939 (the “Trust Indenture Act”) and Indenture Trust Indenture Act Section Indenture Section §310(a)(1) 608 (a)(2) 608 (b) 609 §311(a) 613 (b) 613 §312(a) 701 (b) 702 (c) 702 §313(a) 703 (b)(2) 703 (c) 703 (d) 703 §314(a) 704 (c)(1

May 26, 2023 EX-FILING FEES

Calculation of Filing Fee Table.

Exhibit 107 Calculation of Filing Fee Tables Form S-3 (Form Type) Stellar Bancorp, Inc.

May 26, 2023 EX-24.1

Power of Attorney

Exhibit 24.1 POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Robert R. Franklin, Jr., Paul P. Egge and Justin M. Long, and each of them severally, as his or her true and lawful attorneys-in-fact and agents, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any

May 4, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q S QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2023 OR £ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO COMMISSION FILE NUMBER: 001-38280 St

April 28, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): April 28, 2023 Stellar Bancorp, I

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): April 28, 2023 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Numb

April 28, 2023 EX-99.2

First Quarter 2023 Earnings Presentation Exhibit 99.2 Forward-Looking Statements and Non-GAAP Financial Measures 2 Certain statements in this press release which are not historical in nature are intended to be, and are hereby identified as, “forward-

a992erq12023 First Quarter 2023 Earnings Presentation Exhibit 99.2 Forward-Looking Statements and Non-GAAP Financial Measures 2 Certain statements in this press release which are not historical in nature are intended to be, and are hereby identified as, “forward-looking statements” for purposes of the safe harbor provided by Section 27A of the Securities Act of 1933, as amended, and Section 21E of

April 28, 2023 EX-99.1

STELLAR BANCORP, INC. REPORTS FIRST QUARTER 2023 RESULTS

Exhibit 99.1 PRESS RELEASE STELLAR BANCORP, INC. REPORTS FIRST QUARTER 2023 RESULTS HOUSTON, April 28, 2023 - Stellar Bancorp, Inc. (the “Company” or “Stellar”) (NASDAQ: STEL) today reported net income of $37.1 million and diluted earnings per share of $0.70 for the first quarter 2023 as compared to net income of $2.1 million and diluted earnings per share of $0.04 for the fourth quarter 2022. The

April 25, 2023 ARS

ARS

2022 Annual ReportWe empower people to thrive. Stellar Bank came to be in 2023, when Allegiance Bank and CommunityBank of Texas joined forces. What emerged was a financial institution like no other. Stellar bankers set the standard for responsive, relationship- based community banking. We have the expertise, resources and personal focus to out-service the big banks and out-bank the small banks. Ou

April 25, 2023 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.    )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.    ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule

March 15, 2023 EX-4.2

Description of Registrant’s Securities

Exhibit 4.2 DESCRIPTION OF REGISTRANT’S SECURITIES As of December 31, 2022, Stellar Bancorp, Inc. (the “Company”) had one class of securities registered under Section 12 of the Securities Exchange Act of 1934 (the “Exchange Act”), the Company’s common stock. Description of Common Stock The following is a summary and does not describe every right, term or condition of owning the Company’s common st

March 15, 2023 10-K

21 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents 21 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

March 15, 2023 EX-21.1

Stellar Bancorp, Inc.

Exhibit 21.1 STELLAR BANCORP, INC. LIST OF SUBSIDIARIES AS OF MARCH 15, 2023 Direct Subsidiaries Jurisdiction of Organization Parent Entity Stellar Bank Texas Stellar Bancorp, Inc. Farmers & Merchants Capital Trust II Delaware Stellar Bancorp, Inc. Farmers & Merchants Capital Trust III Delaware Stellar Bancorp, Inc. Indirect Subsidiaries Jurisdiction of Organization Parent Entity ABTX Financial, I

March 15, 2023 EX-24.1

Power of Attorney

Exhibit 24.1 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Robert R. Franklin, Jr., Paul P. Egge and Justin M. Long, and each of them, his or her true and lawful attorneys-in-fact and agents, and with power of substitution and resubstitution, for him or her and in his or her name, place and stead, and in any and all capaci

February 24, 2023 EX-99.2

STELLAR BANCORP, INC. DECLARES QUARTERLY DIVIDEND

Exhibit 99.2 PRESS RELEASE STELLAR BANCORP, INC. DECLARES QUARTERLY DIVIDEND HOUSTON, February 24, 2023 - (GLOBE NEWSWIRE) – Stellar Bancorp, Inc. (the “Company” ) (Nasdaq: STEL) today announced that on February 22, 2023, its Board of Directors declared a quarterly cash dividend in the amount of $0.13 per share of common stock. The dividend will be payable on March 31, 2023 to the Company’s shareh

February 24, 2023 EX-99.1

STELLAR BANK COMPLETES NAME CHANGE AND LAUNCHES NEW BRAND

Exhibit 99.1 PRESS RELEASE IR.stellarbancorp.com STELLAR BANK COMPLETES NAME CHANGE AND LAUNCHES NEW BRAND HOUSTON, February 24, 2023 - (GLOBE NEWSWIRE) – Stellar Bank, the banking subsidiary of Stellar Bancorp, Inc. (NASDAQ: STEL), announced that it formally changed its name to Stellar Bank and launched its new brand in connection with the conversion of operations and systems. Stellar Bank was fo

February 24, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): February 22, 2023 Stellar Bancorp

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): February 22, 2023 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File N

February 9, 2023 SC 13G

STEL / Stellar Bancorp Inc / VANGUARD GROUP INC - SCHEDULE 13G Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 Name of issuer: Stellar Bancorp Inc. Title of Class of Securities: Common Stock CUSIP Number: 858927106 Date of Event Which Requires Filing of this Statement: December 30, 2022 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ Rule 13d-1(b) ☐ Ru

February 8, 2023 SC 13G/A

CBTX / CBTX Inc / FJ Capital Management LLC Passive Investment

SC 13G/A 1 cbtx10615.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2) * CBTX, Inc. (CBTX) (Name of Issuer) Common Stock (Title of Class of Securities) 12481V 10 4 (CUSIP Number) 12/31/2022 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuan

January 27, 2023 EX-99.1

STELLAR BANCORP, INC. REPORTS FOURTH QUARTER 2022 RESULTS

Exhibit 99.1 PRESS RELEASE STELLAR BANCORP, INC. REPORTS FOURTH QUARTER 2022 RESULTS HOUSTON, January 27, 2023 - Stellar Bancorp, Inc. (the “Company” or “Stellar”) (NASDAQ: STEL) today reported net income of $2.1 million, or $0.04 earnings per diluted share, for the fourth quarter 2022 and $51.4 million, or $1.47 earnings per diluted share, for the year ended December 31, 2022. The fourth quarter

January 27, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): January 27, 2023 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Nu

January 27, 2023 EX-99.2

Fourth Quarter 2022 Earnings Presentation Exhibit 99.2 Forward-Looking Statements and Non-GAAP Financial Measures 2 Certain statements in this presentation which are not historical in nature are intended to be, and are hereby identified as, “forward-

Fourth Quarter 2022 Earnings Presentation Exhibit 99.2 Forward-Looking Statements and Non-GAAP Financial Measures 2 Certain statements in this presentation which are not historical in nature are intended to be, and are hereby identified as, “forward-looking statements” for purposes of the safe harbor provided by Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securiti

January 23, 2023 SC 13G

STEL / Stellar Bancorp Inc / BlackRock Inc. Passive Investment

us8589271068012323.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: ) Stellar Bancorp, Inc. - (Name of Issuer) Common Stock - (Title of Class of Securities) 858927106 - (CUSIP Number) December 31, 2022 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant

December 16, 2022 EX-10.1

Third Amended and Restated Loan Agreement, dated December 13, 2022 (incorporated herein by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on December 16, 2022)

Exhibit 10.1 THIRD AMENDED AND RESTATED LOAN AGREEMENT Between STELLAR BANCORP, INC. FROST BANK 9 Greenway Plaza, Suite 110 P.O. Box 1600 Houston, Texas 77046 and San Antonio, Texas 78296 THIS THIRD AMENDED AND RESTATED LOAN AGREEMENT (this “Agreement”), dated as of December 13, 2022, will serve to set forth the terms of the financing transaction by and between STELLAR BANCORP, INC., a Texas corpo

December 16, 2022 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): December 13, 2022 Stellar Bancorp

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): December 13, 2022 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File N

December 16, 2022 EX-10.2

Revolving Promissory Note (Floating Rate), dated December 13, 2022

Exhibit 10.2 RENEWAL PROMISSORY NOTE (Floating Rate) $75,000,000.00 December 13, 2022 For value received, STELLAR BANCORP, INC., a Texas corporation (f/k/a CBTX, Inc. (“CBTX”)), as principal (“Borrower,” whether one or more), jointly and severally (if more than one) promises to pay to the order of FROST BANK, a Texas state bank (“Lender”), at P.O. Box 34746, San Antonio, Texas 78265, or at such ot

November 18, 2022 EX-10.2

Amended and Restated Pledge and Security Agreement, dated November

Exhibit 10.2 AMENDED AND RESTATED PLEDGE AND SECURITY AGREEMENT THIS AMENDED AND RESTATED PLEDGE AGREEMENT (this ?Agreement?) is made and entered into as of November 17, 2022, by and between FROST BANK, a Texas state bank (?Lender?), and STELLAR BANCORP, INC., a Texas corporation (?SBI? or ?Borrower?), f/k/a CBTX, Inc. RECITALS: WHEREAS, on or about December 13, 2017, Lender made available to Borr

November 18, 2022 EX-10.1

, 2022, by and between Frost Bank and Stellar Bancorp, Inc.

Exhibit 10.1 MODIFICATION AGREEMENT THIS MODIFICATION AGREEMENT (this ?Modification Agreement?) is made and entered into as of November 17, 2022 (the ?Modification Date?), by and between FROST BANK, a Texas state bank (?Lender?), and STELLAR BANCORP, INC., a Texas corporation (?SBI? or ?Borrower?), f/k/a CBTX, Inc. RECITALS: WHEREAS, on or about December 13, 2017, Lender made available to Borrower

November 18, 2022 EX-99.1

STELLAR BANCORP, INC. DECLARES QUARTERLY DIVIDEND

Exhibit 99.1 PRESS RELEASE STELLAR BANCORP, INC. DECLARES QUARTERLY DIVIDEND HOUSTON, Nov 18, 2022 - (GLOBE NEWSWIRE) ? Stellar Bancorp, Inc. (the ?Company? or ?Stellar?) (Nasdaq: STEL) today announced that its Board of Directors declared a quarterly cash dividend in the amount of $0.13 per share of common stock. The dividend will be payable on December 30, 2022 to the Company?s shareholders of re

November 18, 2022 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): November 17, 2022 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File N

October 31, 2022 S-8

As filed with the Securities and Exchange Commission on October 31, 2022

As filed with the Securities and Exchange Commission on October 31, 2022 Registration No.

October 31, 2022 EX-FILING FEES

Filing fee table.

Exhibit 107 Calculation of Filing Fee Table Form S-8 (Form type) Stellar Bancorp, Inc.

October 31, 2022 EX-99.3

Stellar Bancorp, Inc. Form of Performance Share Award Agreement (incorporated by reference to Exhibit 99.3 to the Company’s Registration Statement on Form S-8 filed on October 31, 2022 (File No. 333-268073)

Exhibit 99.3 PERFORMANCE SHARE AWARD GRANT NOTICE STELLAR BANCORP, INC. 2022 OMNIBUS INCENTIVE PLAN Stellar Bancorp, Inc., a Texas corporation (the “Company” or “Stellar”), pursuant to its 2022 Omnibus Incentive Plan (the “Plan”), hereby grants to the individual listed below (“Participant”), the award (“Award”) of shares of performance-based restricted stock (the “Performance Shares”) set forth be

October 31, 2022 EX-24.1

Power of Attorney of Directors and Officers of Stellar Bancorp, Inc.

Exhibit 24.1 POWER OF ATTORNEY Each person whose signature appears below constitutes and appoints Robert R. Franklin, Jr., Justin M. Long and Shanna Kuzdzal, and each of them individually, his true or her and lawful attorneys-in-fact and agents, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead to affix his or her signature as director or of

October 31, 2022 EX-99.2

Stellar Bancorp, Inc. Form of Restricted Stock Award Agreement (incorporated by reference to Exhibit 99.2 to the Company’s Registration Statement on Form S-8 filed on October 31, 2022 (File No. 333-268073)

Exhibit 99.2 RESTRICTED STOCK AWARD GRANT NOTICE STELLAR BANCORP, INC. 2022 OMNIBUS INCENTIVE PLAN Stellar Bancorp, Inc., a Texas corporation (the “Company” or “Stellar”), pursuant to its 2022 Omnibus Incentive Plan (the “Plan”), hereby grants to the individual listed below (“Participant”), the award (“Award”) of shares of restricted stock set forth below. This Award is subject to all of the terms

October 28, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . Commission File Number: 001-38

October 28, 2022 EX-99.2

Third Quarter 2022 Earnings Presentation Exhibit 99.2 Forward-Looking Statements and Non-GAAP Financial Measures 2 Certain statements in this press release which are not historical in nature are intended to be, and are hereby identified as, “forward-

a992earningspresentation Third Quarter 2022 Earnings Presentation Exhibit 99.2 Forward-Looking Statements and Non-GAAP Financial Measures 2 Certain statements in this press release which are not historical in nature are intended to be, and are hereby identified as, “forward-looking statements” for purposes of the safe harbor provided by Section 27A of the Securities Act of 1933, as amended, and Se

October 28, 2022 EX-99.1

STELLAR BANCORP, INC. REPORTS THIRD QUARTER 2022 RESULTS

Exhibit 99.1 PRESS RELEASE STELLAR BANCORP, INC. REPORTS THIRD QUARTER 2022 RESULTS HOUSTON, October 28, 2022 - (NASDAQ: STEL) The merger of equals between CBTX, Inc. (CBTX) and Allegiance Bancshares, Inc. (Allegiance) became effective as of October 1, 2022, with the combined company renamed Stellar Bancorp, Inc. This press release includes the pre-merger financial results of stand-alone CBTX and

October 28, 2022 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): October 28, 2022 Stellar Bancorp,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): October 28, 2022 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation) (Commission File Nu

October 26, 2022 EX-99.3

UNAUDITED PRO FORMA COMBINED CONDENSED CONSOLIDATED FINANCIAL INFORMATION

Exhibit 99.3 UNAUDITED PRO FORMA COMBINED CONDENSED CONSOLIDATED FINANCIAL INFORMATION The following tables present unaudited condensed consolidated financial information for each of CBTX and Allegiance, as well as unaudited pro forma combined condensed consolidated financial information for CBTX and Allegiance reflecting the merger and pro forma adjustments described in the accompanying notes. CB

October 26, 2022 8-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): October 1, 20

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event Reported): October 1, 2022 Stellar Bancorp, Inc. (Exact Name of Registrant as Specified in Charter) Texas 001-38280 20-8339782 (State or Other Jurisdiction of Incorporation)

October 7, 2022 SC 13G/A

CBTX / CBTX Inc / BlackRock Inc. Passive Investment

us12481v1044100622.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 3) STELLAR BANCORP INC - (Name of Issuer) Common Stock - (Title of Class of Securities) 12481V104 - (CUSIP Number) September 30, 2022 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant

October 7, 2022 SC 13G/A

CBTX / CBTX Inc / BlackRock Inc. Passive Investment

us12481v1044100622.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 2) STELLAR BANCORP INC - (Name of Issuer) Common Stock - (Title of Class of Securities) 12481V104 - (CUSIP Number) September 30, 2022 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant

October 3, 2022 EX-14.1

Code of Business Conduct and Ethics

Exhibit 14.1 ? STELLAR BANCORP,?INC. ? CODE OF BUSINESS CONDUCT AND ETHICS ? Effective as of October?1, 2022 ? This Code of Business Conduct and Ethics (?Code?) covers a wide range of business practices and procedures. It does not cover every issue that may arise but it sets out basic principles to guide all our personnel. All personnel must conduct themselves accordingly and seek to avoid even th

October 3, 2022 S-8 POS

As filed with the Securities and Exchange Commission on October 3, 2022

As filed with the Securities and Exchange Commission on October 3, 2022 Registration No.

October 3, 2022 8-K

Changes in Control of Registrant, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Amendment to Registrant's Code of Ethics, or Waiver of a Provision of the Code of Ethics, Material Modification to Rights of Security Holders, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant, Completion of Acquisition or Disposition of Assets

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): October 1, 2022 Stellar Bancorp, Inc. (Exact name of registrant as specified in its charter) Texas 001-38280 20-8339782 (State or other jurisdiction of (Commission File Number) (I.R.S

October 3, 2022 EX-10.5

Stellar Bancorp, Inc. 2022 Omnibus Incentive Plan (incorporated herein by reference to Exhibit 10.5 to the Company’s Current Report on Form 8-K filed on October 3, 2022)

Exhibit 10.5 STELLAR BANCORP, INC. 2022 OMNIBUS INCENTIVE PLAN (adopted by the Company?s Board of Directors on January 23, 2022) (approved by the Company?s shareholders on May 24, 2022) 1.?????????????Purpose; Background. The purpose of the Stellar Bancorp, Inc. 2022 Omnibus Incentive Plan (the ?Plan?), is to provide an additional incentive to selected officers, employees, non-employee directors a

October 3, 2022 EX-10.6

Form of Stellar Bancorp, Inc. Indemnification Agreement (incorporated herein by reference to Exhibit 10.6 to the Company’s Current Report on Form 8-K filed on October 3, 2022)

Exhibit 10.6 FORM OF INDEMNIFICATION AGREEMENT THIS INDEMNIFICATION AGREEMENT (?Agreement?) is made as of , 20 by and between Stellar Bancorp, Inc., a Texas corporation (the ?Company?), and (?Indemnitee?). This Agreement supersedes and replaces any and all previous agreements between the Company and Indemnitee covering the subject matter of this Agreement. RECITALS WHEREAS, highly competent person

October 3, 2022 EX-24.1

Power of Attorney of Directors and Officers of Stellar Bancorp, Inc.

Exhibit 24.1 POWER OF ATTORNEY Each person whose signature appears below constitutes and appoints Robert R. Franklin, Jr., Justin M. Long and Shanna Kuzdzal, and each of them individually, his true or her and lawful attorneys-in-fact and agents, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead to affix his or her signature as director or of

October 3, 2022 EX-4.1

Specimen Common Stock Certificate (incorporated herein by reference to Exhibit 4.1 to the Company’s Current Report on Form 8-K filed on October 3, 2022)

Exhibit 4.1 012?456?7289107211?1211312?142?721516712?1212?17161112?1813111011?1619?172712131020?111137211131789107221?13191227?221320913723?2425?2627242428?419?231697?111137211?14272?17162927221?18231212?302311011301312101620?132021?23169?113292?11163021?167?12713201119277221?1212?111137211?132021728921112221?13?111521710191017?17161112?1813111011?171330179301312101620?322121162125?142?11329215716

October 3, 2022 EX-3.2

Bylaws of Stellar Bancorp, Inc. (incorporated herein by reference to Exhibit 3.2 to the Company’s Current Report on Form 8-K filed on October 3, 2022)

Exhibit 3.2 BYLAWS OF STELLAR BANCORP, INC. TABLE OF CONTENTS ARTICLE I. ? NAME AND OFFICES 1 1.01 Registered Office Address 1 1.02 Other Offices 1 ARTICLE II. ? SHAREHOLDERS? MEETINGS 1 2.01 Place of Meetings 1 2.02 Annual Meeting 1 2.03 Special Meetings 1 2.04 Notice 1 2.05 Quorum 2 2.06 Method of Voting 2 2.07 Record Date 3 2.08 Voting List 4 2.09 Procedure 4 2.10 Action by Consent 9 2.11 Prese

October 3, 2022 EX-3.1

Second Amended and Restated Certificate of Formation of Stellar Bancorp, Inc. (incorporated herein by reference to Exhibit 3.1 to the Company’s Current Report on Form 8-K filed on October 3, 2022)

Exhibit 3.1 SECOND AMENDED AND RESTATED CERTIFICATE OF FORMATION OF cbtx, inc. Entity Information The name of the filing entity is CBTX, Inc. (the ?Corporation?). The Corporation is a for-profit corporation. The file number issued to the Corporation by the Secretary of State is 800765321. The date of formation of the Corporation was January 26, 2007. Statement of Approval Each new amendment has be

September 30, 2022 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ? ? FORM 8-K ? ? ? CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 ? Date of Report (Date of earliest event reported): September 30, 2022 ? ? CBTX, Inc. (Exact name of registrant as specified in its charter) ? ? ? ? ? Texas 001-38280 20-8339782 (State or other jurisdiction of (Commission F

September 30, 2022 EX-99.1

1

? EXHIBIT 99.1 ? ? ? ? HOUSTON, TEXAS September 30, 2022 - Allegiance Bancshares, Inc. (NASDAQ: ABTX) (?Allegiance?), the holding company of Allegiance Bank, and CBTX, Inc. (NASDAQ: CBTX) (?CBTX?), the holding company of CommunityBank of Texas, N.A., today jointly announced the closing of the merger of equals between Allegiance and CBTX to form Stellar Bancorp, Inc. (?Stellar?), effective October

September 26, 2022 8-K/A

Changes in Registrant's Certifying Accountant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 1) CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): August 17, 2022 CBTX, Inc. (Exact name of registrant as specified in its charter) Texas 001-38280 20-8339782 (State or other jurisdiction of (Commission File Numbe

September 22, 2022 EX-99.1

CBTX, Inc. Announces New Share Repurchase Program

Exhibit 99.1 ? CBTX, Inc. Announces New Share Repurchase Program HOUSTON, Texas (September 22, 2022) ? CBTX, Inc. (Nasdaq: CBTX) CBTX, Inc. (the ?Company?) announced that its Board of Directors authorized a new share repurchase program under which the Company may repurchase up to $40 million of the Company?s common stock beginning after the close of business through September 30, 2023. Repurchases

September 22, 2022 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ? ? FORM 8-K ? ? CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 ? Date of Report (Date of earliest event reported): September 22, 2022 ? ? CBTX, Inc. (Exact name of registrant as specified in its charter) ? ? ? ? ? Texas 001-38280 20-8339782 (State or other jurisdiction of (Commission Fil

September 21, 2022 EX-99.1

CBTX, Inc. Declares Quarterly Dividend

Exhibit 99.1 ? CBTX, Inc. Declares Quarterly Dividend ? HOUSTON, Texas (September 21, 2022) ? CBTX, Inc. (the ?Company?) (Nasdaq: CBTX), the bank holding company for CommunityBank of Texas N.A., today announced that its Board of Directors declared a quarterly cash dividend in the amount of $0.13 per share of common stock. The dividend will be payable on October 14, 2022 to the Company?s shareholde

September 21, 2022 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ? ? FORM 8-K ? ? CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 ? Date of Report (Date of earliest event reported): September 21, 2022 ? ? CBTX, Inc. (Exact name of registrant as specified in its charter) ? ? ? ? ? Texas 001-38280 20-8339782 (State or other jurisdiction of (Commission Fil

September 15, 2022 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): September 14, 2022 CBTX, Inc. (Exact name of registrant as specified in its charter) Texas 001-38280 20-8339782 (State or other jurisdiction of (Commission File Number) (I.R.S. Employ

September 15, 2022 EX-16.1

Joint Press Release, dated September 15, 2022

Exhibit 16.1 JOINT PRESS RELEASE Allegiance Bancshares, Inc. [email protected] CBTX, Inc. [email protected] Allegiance Bancshares, Inc. and CBTX, Inc. Announce Regulatory Approvals for Merger of Equals HOUSTON, TEXAS September 15, 2022 - Allegiance Bancshares, Inc. (NASDAQ: ABTX) (?Allegiance?), the holding company of Allegiance Bank, and CBTX, Inc. (NASDAQ: CBTX) (?CBTX?), the holding compa

August 26, 2022 EX-10.2

Employment Agreement, dated August 26, 2022, by and among CBTX, Inc., CommunityBank of Texas, N.A. and J. Pat Parsons (incorporated by reference to Exhibit 10.2 to the Company’s Form 8-K filed with the Commission on August 26, 2022)

Exhibit 10.2 EMPLOYMENT AGREEMENT This EMPLOYMENT AGREEMENT (the ?Agreement?) is made and shall be effective as of the 26th day of August, 2022 (the ?Effective Date?), by and among COMMUNITYBANK OF TEXAS, NATIONAL ASSOCIATION, having a principal place of business at 9 Greenway Plaza, Suite 110, Houston, TX 77046 (together with its successors and assigns, the ?Bank?), and J. Pat Parsons, an individ

August 26, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): August 26, 2022 CBTX, Inc. (Exact name of registrant as specified in its charter) Texas 001-38280 20-8339782 (State or other jurisdiction of (Commission File Number) (I.R.S. Employer

August 26, 2022 EX-10.1

Amended and Restated Employment Agreement, dated August 26, 2022, by and among CommunityBank of Texas, N.A. and Travis Jaggers (incorporated herein by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on August 26, 2022)

Exhibit 10.1 AMENDED AND RESTATED EMPLOYMENT AGREEMENT This Amended and Restated Employment Agreement (the ?Agreement?) is made and shall be effective as of the 26th day of August, 2022 (the ?Effective Date?), by and among COMMUNITYBANK OF TEXAS, National Association, having a principal place of business at 9 Greenway Plaza, Suite 110, Houston, TX 77046 (together with its successors and assigns, t

August 25, 2022 EX-2.1

First Amendment, dated as of August 25, 2022, to the Agreement and Plan of Merger, dated as of November 5, 2021, by and between CBTX, Inc. and Allegiance Bancshares, Inc. (incorporated herein by reference to Exhibit 2.1 to the Company’s Current Report on Form 8-K filed on August 25, 2022)

Exhibit 2.1 FIRST AMENDMENT to the Agreement and plan of merger ? This First Amendment to the Agreement and Plan of Merger (this ?Amendment?) is made and entered into as of August 25, 2022, by and between CBTX, Inc., a Texas corporation (?CBTX?), and Allegiance Bancshares, Inc., a Texas corporation (?Allegiance?). ? Recitals ? WHEREAS, CBTX and Allegiance are parties to that certain Agreement and

August 25, 2022 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ? ? FORM 8-K ? ? CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 ? Date of Report (Date of earliest event reported): August 25, 2022 ? ? CBTX, Inc. (Exact name of registrant as specified in its charter) ? ? ? ? ? Texas 001-38280 20-8339782 (State or other jurisdiction of (Commission File N

August 23, 2022 8-K

Financial Statements and Exhibits, Changes in Registrant's Certifying Accountant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ? ? FORM 8-K ? ? CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 ? Date of Report (Date of earliest event reported): August 17, 2022 ? ? CBTX, Inc. (Exact name of registrant as specified in its charter) ? ? ? ? ? Texas 001-38280 20-8339782 (State or other jurisdiction of (Commission File N

August 23, 2022 EX-16.1

Letter of Grant Thornton

Exhibit 16.1 August 23, 2022 U.S. Securities and Exchange Commission Office of the Chief Accountant 100 F Street, NE Washington, DC 20549 Re: CBTX, Inc. File No. 001-38280 Dear Sir or Madam: We have read Item 4.01 of Form 8-K of CBTX, Inc. dated August 17, 2022, and agree with the statements concerning our Firm contained therein. Very truly yours, /s/ GRANT THORNTON LLP

July 28, 2022 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ? ? FORM 8-K ? ? CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 ? Date of Report (Date of earliest event reported): July 28, 2022 ? ? CBTX, Inc. (Exact name of registrant as specified in its charter) ? ? ? ? ? Texas 001-38280 20-8339782 (State or other jurisdiction of (Commission File Num

July 28, 2022 EX-99.1

CBTX, INC. AND SUBSIDIARY Financial Highlights (In thousands, except per share data and percentages)

? ? Exhibit 99.1 ? ? CBTX, Inc. Reports Second Quarter Financial Results ? Houston, Texas, July 28, 2022 - CBTX, Inc., or the Company (NASDAQ: CBTX), the bank holding company for CommunityBank of Texas, N.A., or the Bank, today announced its results for the quarter ended June 30, 2022. ? Robert R. Franklin, Jr., Chairman, CEO and President of the Company said, ?We are pleased to present our result

July 28, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2022 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . Commission File Number: 001-38280 C

July 28, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ? ? FORM 8-K ? ? CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 ? Date of Report (Date of earliest event reported): July 28, 2022 ? ? CBTX, Inc. (Exact name of registrant as specified in its charter) ? ? ? ? ? Texas 001-38280 20-8339782 (State or other jurisdiction of (Commission File Num

July 28, 2022 EX-99.1

2 SAFE HARBOR STATEMENT AND NON - GAAP FINANCIAL MEASURES NON - GAAP FINANCIAL MEASURES This presentation contains certain non - GAAP (generally accepted accounting principles) financial measures, including tangible equity, tangible assets, tangible

Exhibit 99.1 CBTX, Inc. Second Quarter 2022 \ Investor Presentation NASDAQ: CBTX 2 SAFE HARBOR STATEMENT AND NON - GAAP FINANCIAL MEASURES NON - GAAP FINANCIAL MEASURES This presentation contains certain non - GAAP (generally accepted accounting principles) financial measures, including tangible equity, tangible assets, tangible book value per share, tangible equity to tangible assets, return on a

June 30, 2022 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ? ? FORM 8-K ? ? CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 ? Date of Report (Date of earliest event reported): June 29, 2022 ? ? CBTX, Inc. (Exact name of registrant as specified in its charter) ? ? ? ? ? Texas 001-38280 20-8339782 (State or other jurisdiction of (Commission File Num

June 16, 2022 EX-99.2

Allegiance Bancshares, Inc. and CBTX, Inc. Announce FDIC Approval of Merger of Equals

? Exhibit 99.2 ? JOINT PRESS RELEASE Allegiance Bancshares, Inc. [email protected] CBTX, Inc. [email protected] Allegiance Bancshares, Inc. and CBTX, Inc. Announce FDIC Approval of Merger of Equals HOUSTON, June 16, 2022 - Allegiance Bancshares, Inc. (NASDAQ: ABTX) (?Allegiance?), the holding company of Allegiance Bank, and CBTX, Inc. (NASDAQ: CBTX) (?CBTX?), the holding company of Community

June 16, 2022 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ? ? FORM 8-K ? ? CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 ? Date of Report (Date of earliest event reported): June 16, 2022 ? ? CBTX, Inc. (Exact name of registrant as specified in its charter) ? ? ? ? ? Texas 001-38280 20-8339782 (State or other jurisdiction of (Commission File Num

June 16, 2022 EX-99.1

CBTX, Inc. Declares Quarterly Dividend

Exhibit 99.1 ? CBTX, Inc. Declares Quarterly Dividend ? HOUSTON, Texas (June 16, 2022) ? CBTX, Inc. (Nasdaq: CBTX), the bank holding company for CommunityBank of Texas N.A., today announced that its Board of Directors declared a quarterly cash dividend in the amount of $0.13 per share of common stock. The dividend will be payable on July 15, 2022 to shareholders of record as of the close of busine

May 25, 2022 EX-99.1

Allegiance Bancshares, Inc. and CBTX, Inc. Shareholders Approve Merger

Exhibit 99.1 JOINT PRESS RELEASE Allegiance Bancshares, Inc. [email protected] CBTX, Inc. [email protected] Allegiance Bancshares, Inc. and CBTX, Inc. Shareholders Approve Merger HOUSTON, May 24, 2022 - Allegiance Bancshares, Inc. (NASDAQ: ABTX) (?Allegiance?), the holding company of Allegiance Bank, and CBTX, Inc. (NASDAQ: CBTX) ("CBTX"), the holding company of CommunityBank of Texas, N.A.,

May 25, 2022 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? ? Confidential, For Use of the Commission Only (as Permitted by Rule 14a-6(e)(2)) ? ?

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