PB / Prosperity Bancshares, Inc. - Документы SEC, Годовой отчет, Доверенное заявление

Просперити Банкшарс, Инк.
US ˙ NYSE ˙ US7436061052

Основная статистика
LEI 5493003WRRL7ZRXZ5630
CIK 1068851
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 Prosperity Bancshares, Inc.
SEC Filings (Chronological Order)
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August 7, 2025 10-Q

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ 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: 001-35388 PROSPERITY

July 24, 2025 425

-2-

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: American Bank Holding Corporation Commission File No.: 001-35388 Date: July 24, 2025 The following are excerpts from the transcript of the Q2 2025 earnings call held by Prosperity Bancshares, Inc. (“Prosperity

July 23, 2025 EX-99.1

PROSPERITY BANCSHARES, INC.® REPORTS SECOND QUARTER 2025 EARNINGS

Exhibit 99.1 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 SECOND QUARTER 2025 EARNINGS • Second quarter earnings per share (diluted

July 23, 2025 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): July 23, 2025 PROSPERITY BANCSHAR

Filed by Prosperity Banshares, Inc. Pursuant to Rule 425 under the Securities Act of 1933 Subject Company: American Bank Holding Company Commission File Number: 001-35388 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 23, 202

July 23, 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 23, 2025 PROSPERITY BANCSHAR

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 23, 2025 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commission

July 23, 2025 EX-99.1

PROSPERITY BANCSHARES, INC.® REPORTS SECOND QUARTER 2025 EARNINGS

Exhibit 99.1 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 SECOND QUARTER 2025 EARNINGS • Second quarter earnings per share (diluted

July 18, 2025 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): July 18, 2025 PROSPERITY BANCSHAR

Filed by Prosperity Banshares, Inc. Pursuant to Rule 425 under the Securities Act of 1933 Subject Company: American Bank Holding Company Commission File Number: 001-35388 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 18, 202

July 18, 2025 EX-99.1

Cautionary Note on Forward Looking Statements This presentation contains statements regarding the proposed transaction between Prosperity and American; future financial and operating results; benefits and synergies of the transaction; future opportun

American Bank Holding Corporation the Bank Holding Company for: Announces the acquisition of July 18, 2025 Exhibit 99.

July 18, 2025 EX-99.2

PROSPERITY BANCSHARES, INC.® AMERICAN BANK HOLDING CORPORATION IN CORPUS CHRISTI, TEXAS ANNOUNCE MERGER

Exhibit 99.2 PRESS RELEASE PROSPERITY BANCSHARES, INC.® AND AMERICAN BANK HOLDING CORPORATION IN CORPUS CHRISTI, TEXAS ANNOUNCE MERGER FOR IMMEDIATE RELEASE HOUSTON AND CORPUS CHRISTI, TEXAS, July 18, 2025. Prosperity Bancshares, Inc.® (NYSE: PB) (“Prosperity”), the parent company of Prosperity Bank®, and American Bank Holding Corporation (“American”), the parent holding company of American Bank,

July 18, 2025 EX-99.2

PROSPERITY BANCSHARES, INC.® AMERICAN BANK HOLDING CORPORATION IN CORPUS CHRISTI, TEXAS ANNOUNCE MERGER

Exhibit 99.2 PRESS RELEASE PROSPERITY BANCSHARES, INC.® AND AMERICAN BANK HOLDING CORPORATION IN CORPUS CHRISTI, TEXAS ANNOUNCE MERGER FOR IMMEDIATE RELEASE HOUSTON AND CORPUS CHRISTI, TEXAS, July 18, 2025. Prosperity Bancshares, Inc.® (NYSE: PB) (“Prosperity”), the parent company of Prosperity Bank®, and American Bank Holding Corporation (“American”), the parent holding company of American Bank,

July 18, 2025 EX-99.1

Cautionary Note on Forward Looking Statements This presentation contains statements regarding the proposed transaction between Prosperity and American; future financial and operating results; benefits and synergies of the transaction; future opportun

American Bank Holding Corporation the Bank Holding Company for: Announces the acquisition of July 18, 2025 Exhibit 99.

July 18, 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 18, 2025 PROSPERITY BANCSHAR

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 18, 2025 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commission

June 17, 2025 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K FOR ANNUAL REPORTS OF EMPLOYEE STOCK PURCHASE, SAVINGS AND SIMILAR PLANS PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K FOR ANNUAL REPORTS OF EMPLOYEE STOCK PURCHASE, SAVINGS AND SIMILAR PLANS PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (Mark One) [ X ] ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR [ ] TRANSITION REPO

May 8, 2025 10-Q

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ 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: 001-35388 PROSPERIT

April 23, 2025 EX-99.1

PROSPERITY BANCSHARES, INC.® REPORTS FIRST QUARTER 2025 EARNINGS

Exhibit 99.1 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 FIRST QUARTER 2025 EARNINGS • First quarter earnings per share (diluted)

April 23, 2025 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): April 23, 2025 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commission

April 16, 2025 EX-10.1

Executive Employment Agreement dated April 15, 2025 by and among Prosperity Bancshares, Inc, Prosperity Bank and Kevin J. Hanigan.

Exhibit 10.1 Executive Employment Agreement This Executive Employment Agreement (the “Agreement”) is made and entered into by and among Prosperity Bancshares, Inc., a Texas corporation (“Bancshares”), Prosperity Bank (the “Bank”), a Texas banking association and wholly owned subsidiary of Bancshares, and Kevin J. Hanigan, an individual who resides in Texas (“Executive”). Bancshares and the Bank ar

April 16, 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): April 15, 2025 PROSPERITY BANCSHA

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 15, 2025 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commission

April 16, 2025 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): April 15, 2025 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commission

March 13, 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. )

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 14a-6(e)(2)) ☒ Defin

February 27, 2025 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 (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 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 001-35388 PROSPERITY BANC

February 27, 2025 EX-19.1

Prosperity Bancshares, Inc. Inside Information and Insider Trading Policy

Exhibit 19.1 PROSPERITY BANCSHARES, INC. INSIDE INFORMATION AND INSIDER TRADING POLICY Revised Effective January 21, 2025 I. Introduction The purpose of this Inside Information and Insider Trading Policy (this “Policy”) is to establish the policy of Prosperity Bancshares, Inc. regarding the protection of material, nonpublic and other confidential information, the stringent ethical and legal prohib

February 27, 2025 EX-21.1

Subsidiaries of Prosperity Bancshares, Inc.

Exhibit 21.1 PROSPERITY BANCSHARES, INC. LIST OF SUBSIDIARIES Direct Subsidiaries Jurisdiction of Organization Parent Entity Prosperity Bank Texas Prosperity Bancshares, Inc. Prosperity Interim Corporation Texas Prosperity Bancshares, Inc. Indirect Subsidiaries Jurisdiction of Organization Parent Entity Coppermark Card Services, Inc. Oklahoma Prosperity Bank Citizens Insurance Agency of Texas, Inc

January 29, 2025 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 29, 2025 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commissi

January 29, 2025 EX-99.1

PROSPERITY BANCSHARES, INC.® REPORTS FOURTH QUARTER 2024 EARNINGS

Exhibit 99.1 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 2024 EARNINGS • Fourth quarter earnings per share (diluted

January 22, 2025 EX-10.1

Third Amended and Restated Employment Agreement dated January 21, 2025 by and among Prosperity Bancshares, Inc, Prosperity Bank and H.E. Timanus, Jr.

Exhibit 10.1 THIRD amended and restated EMPLOYMENT AGREEMENT This Third Amended and Restated Employment Agreement ("Agreement"), dated as of February 23, 2001 (the "Effective Date"), previously amended and restated on January 18, 2005 and January 1, 2009, and amended by that certain First Amendment to the Second Amended and Restated Employment Agreement effective as of February 22, 2012 (“First Am

January 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

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 21, 2025 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commissi

November 7, 2024 10-Q

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ 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: 001-35388 PROSP

October 23, 2024 EX-99.1

PROSPERITY BANCSHARES, INC.® REPORTS THIRD QUARTER 2024 EARNINGS

Exhibit 99.1 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 THIRD QUARTER 2024 EARNINGS • Board approved increase in dividend of 3.57

October 23, 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): October 23, 2024 PROSPERITY BANCS

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 23, 2024 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commissi

October 16, 2024 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 15, 2024 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commissi

October 16, 2024 SC 13G/A

PB / Prosperity Bancshares, Inc. / STATE STREET CORP Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* PROSPERITY BANCSHARES INC (Name of Issuer) COMMON STOCK (Title of Class of Securities) 743606105 (CUSIP Number) September 30, 2024 (Date of Event Which Requires Filing of This Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is

October 16, 2024 EX-10.1

Fourth Amended and Restated Employment Agreement dated October 15, 2024 by and among Prosperity Bancshares, Inc, Prosperity Bank and David Zalman.

Exhibit 10.1 FOURTH amended and restated EMPLOYMENT AGREEMENT This Fourth Amended and Restated Employment Agreement ("Agreement"), dated as of January 1, 1998 (the "Effective Date"), previously amended and restated on January 18, 2005, January 1, 2009 and December 29, 2023 and further amended and restated to be effective October 15, 2024, is by and among Prosperity Bancshares, Inc., a Texas corpor

August 7, 2024 10-Q

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ 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: 001-35388 PROSPERITY

July 24, 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): July 24, 2024 PROSPERITY BANCSHAR

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 24, 2024 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commission

July 24, 2024 EX-99.1

PROSPERITY BANCSHARES, INC.® REPORTS SECOND QUARTER 2024 EARNINGS

Exhibit 99.1 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 SECOND QUARTER 2024 EARNINGS • Completed the merger of Lone Star State Ba

June 25, 2024 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K FOR ANNUAL REPORTS OF EMPLOYEE STOCK PURCHASE, SAVINGS AND SIMILAR PLANS PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K FOR ANNUAL REPORTS OF EMPLOYEE STOCK PURCHASE, SAVINGS AND SIMILAR PLANS PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (Mark One) [ X ] ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR [ ] TRANSITION REPO

May 8, 2024 10-Q

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ 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: 001-35388 PROSPERIT

April 24, 2024 EX-99.1

PROSPERITY BANCSHARES, INC.® REPORTS FIRST QUARTER 2024 EARNINGS

Exhibit 99.1 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 FIRST QUARTER 2024 EARNINGS • Net income of $110.4 million and diluted ea

April 24, 2024 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): April 24, 2024 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commission

April 17, 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 16, 2024 PROSPERITY BANCSHA

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 16, 2024 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commission

April 1, 2024 EX-99.1

PROSPERITY BANCSHARES, INC.® COMPLETES MERGER WITH FIRST BANCSHARES OF TEXAS, INC.

Exhibit 99.1 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] PROSPERITY BANCSHARES, INC.® COMPLETES MERGER WITH FIRST BANCSHARES OF TEXAS, INC. FOR IMMEDIATE RELEASE HOUSTON, April 1, 2024. Pro

April 1, 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): April 1, 2024 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commission

March 14, 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. )

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 14a-6(e)(2)) ☒ Defin

February 28, 2024 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 (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 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 001-35388 PROSPERITY BANC

February 28, 2024 EX-21.1

Subsidiaries of Prosperity Bancshares, Inc.

Exhibit 21.1 PROSPERITY BANCSHARES, INC. LIST OF SUBSIDIARIES Direct Subsidiaries Jurisdiction of Organization Parent Entity Prosperity Bank Texas Prosperity Bancshares, Inc. Prosperity Interim Corporation Texas Prosperity Bancshares, Inc. Indirect Subsidiaries Jurisdiction of Organization Parent Entity Coppermark Card Services, Inc. Oklahoma Prosperity Bank Citizens Insurance Agency of Texas, Inc

February 28, 2024 EX-97.1

Clawback Policy

Exhibit 97.1 PROSPERITY BANCSHARES, INC. CLAWBACK POLICY I. Overview A. Prosperity Bancshares, Inc. (the “Company”) has adopted this Clawback Policy (the “Policy”) in accordance with the applicable listing standards of The New York Stock Exchange (the “NYSE”) and Rule 10D-1 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”). To the extent this Policy is in any manner deemed

February 13, 2024 SC 13G/A

PB / Prosperity Bancshares, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv01748-prosperitybancshares.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 15)* Name of issuer: Prosperity Bancshares Inc Title of Class of Securities: Common Stock CUSIP Number: 743606105 Date of Event Which Requires Filing of this Statement: December 29, 2023 Check the appropriate box

February 6, 2024 SC 13G/A

PB / Prosperity Bancshares, Inc. / VICTORY CAPITAL MANAGEMENT INC Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 ( Amendment No. 1)* Prosperity Bancshares Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 743606105 (CUSIP Number) December 31, 2023 (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which

January 24, 2024 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 24, 2024 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commissi

January 24, 2024 EX-99.1

PROSPERITY BANCSHARES, INC.® REPORTS FOURTH QUARTER 2023 EARNINGS

Exhibit 99.1 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.® Cullen Zalman Prosperity Bank Plaza Senior 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 2023 EARNINGS • Net income of $95.5 million and diluted earni

January 2, 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): December 29, 2023 PROSPERITY BANC

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 29, 2023 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commiss

January 2, 2024 EX-10.1

Third Amended and Restated Employment Agreement dated December 29, 2023 by and among Prosperity Bancshares, Inc, Prosperity Bank and David Zalman.

Exhibit 10.1 Third amended and restated EMPLOYMENT AGREEMENT This Third Amended and Restated Employment Agreement ("Agreement"), dated as of January 1, 1998 (the "Effective Date"), previously amended and restated on January 18, 2005 and January 1, 2009, and further amended and restated to be effective December 29, 2023, is by and among Prosperity Bancshares, Inc., a Texas corporation (the "Company

November 3, 2023 10-Q

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ 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: 001-35388 PROSP

October 25, 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 25, 2023 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commissi

October 25, 2023 EX-99.1

PROSPERITY BANCSHARES, INC.® REPORTS THIRD QUARTER 2023 EARNINGS

Exhibit 99.1 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.® Cullen Zalman Prosperity Bank Plaza Senior Vice President – Banking and Corporate Activities 4295 San Felipe 281.269.7199 Houston, Texas 77027 [email protected] FOR IMMEDIATE RELEASE PROSPERITY BANCSHARES, INC.® REPORTS THIRD QUARTER 2023 EARNINGS • Board approved increase in dividend of 1.82% t

August 7, 2023 10-Q

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ 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: 001-35388 PROSPERITY

July 26, 2023 EX-99.1

PROSPERITY BANCSHARES, INC.® REPORTS SECOND QUARTER 2023 EARNINGS

Exhibit 99.1 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.® Cullen Zalman Prosperity Bank Plaza Senior Vice President – Banking and Corporate Activities 4295 San Felipe 281.269.7199 Houston, Texas 77027 [email protected] FOR IMMEDIATE RELEASE PROSPERITY BANCSHARES, INC.® REPORTS SECOND QUARTER 2023 EARNINGS • Net income of $86.9 million and diluted earni

July 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): July 26, 2023 PROSPERITY BANCSHAR

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, 2023 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commission

June 29, 2023 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K FOR ANNUAL REPORTS OF EMPLOYEE STOCK PURCHASE, SAVINGS AND SIMILAR PLANS PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K FOR ANNUAL REPORTS OF EMPLOYEE STOCK PURCHASE, SAVINGS AND SIMILAR PLANS PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (Mark One) [ X ] ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR [ ] TRANSITION REPO

May 5, 2023 10-Q

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ 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: 001-35388 PROSPERIT

May 1, 2023 EX-99

PROSPERITY BANCSHARES, INC.® COMPLETES MERGER WITH FIRST BANCSHARES OF TEXAS, INC.

Exhibit 99.1 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.® Cullen Zalman Prosperity Bank Plaza Senior Vice President – Banking and Corporate Activities 4295 San Felipe 281.269.7199 Houston, Texas 77027 [email protected] PROSPERITY BANCSHARES, INC.® COMPLETES MERGER WITH FIRST BANCSHARES OF TEXAS, INC. FOR IMMEDIATE RELEASE HOUSTON, May 1, 2023. Prosperi

May 1, 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 1, 2023 PROSPERITY BANCSHARES

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 1, 2023 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commission Fi

April 26, 2023 EX-99

PROSPERITY BANCSHARES, INC.® REPORTS FIRST QUARTER 2023 EARNINGS

Exhibit 99.1 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.® Cullen Zalman Prosperity Bank Plaza Senior Vice President – Banking and Corporate Activities 4295 San Felipe 281.269.7199 Houston, Texas 77027 [email protected] FOR IMMEDIATE RELEASE PROSPERITY BANCSHARES, INC.® REPORTS FIRST QUARTER 2023 EARNINGS • First quarter net income of $124.7 million and

April 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): April 26, 2023 PROSPERITY BANCSHA

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, 2023 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commission

April 19, 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 18, 2023 PROSPERITY BANCSHA

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 18, 2023 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commission

March 15, 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. )

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 14a-6(e)(2)) ☒ Defin

February 27, 2023 EX-21

Subsidiaries of Prosperity Bancshares, Inc.

Exhibit 21.1 PROSPERITY BANCSHARES, INC. LIST OF SUBSIDIARIES Direct Subsidiaries Jurisdiction of Organization Parent Entity Prosperity Bank Texas Prosperity Bancshares, Inc. Prosperity Interim Corporation Texas Prosperity Bancshares, Inc. Indirect Subsidiaries Jurisdiction of Organization Parent Entity Coppermark Card Services, Inc. Oklahoma Prosperity Bank Citizens Insurance Agency of Texas, Inc

February 27, 2023 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 (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For The Fiscal Year Ended December 31, 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 001-35388 PROSPERITY BANC

February 17, 2023 425

First Bancshares of Texas, Inc. Consolidated Statements of Financial Condition (Dollar amounts in thousands except share and per share data)

Filed by Prosperity Bancshares, Inc. Pursuant to Rule 425 under the Securities Act of 1933 Subject Company: First Bancshares of Texas, Inc. Commission File Number: 333-269187 SHAREHOLDER LETTER A Message from Ken Burgess It is amazing as I think back to when we started the bank in 1998. We raised $6.3 million from many of you who are still shareholders today. We have turned that initial investment

February 9, 2023 SC 13G/A

PB / Prosperity Bancshares, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv01719-prosperitybancshares.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 14)* Name of issuer: Prosperity Bancshares Inc. Title of Class of Securities: Common Stock CUSIP Number: 743606105 Date of Event Which Requires Filing of this Statement: December 30, 2022 Check the appropriate bo

February 1, 2023 SC 13G

PB / Prosperity Bancshares, Inc. / VICTORY CAPITAL MANAGEMENT INC Passive Investment

SC 13G 1 prosperitybanc13g123122.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 ( Amendment No. )* Prosperity Bancshares Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 743606105 (CUSIP Number) December 31, 2022 (Date of Event which Requires Filing of this Statement) Check the appropriate box to d

January 30, 2023 EX-99.4

Form of Proxy for Special Meeting of Shareholders of Lone Star State Bancshares, Inc.*

Exhibit 99.4 LONE STAR STATE BANCSHARES, INC. 6220 Milwaukee Avenue Lubbock, Texas 79424 THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS I hereby appoint Alan Lackey and Wade Porter, and either of them, with full power of substitution, to be my attorneys and proxies at the special meeting of shareholders of Lone Star State Bancshares, Inc. (the “Company”) to be held on March 28, 2023 a

January 30, 2023 EX-99.5

Form of Employee Stock Ownership Plan Voting Instruction Card for Participants in the Lone Star State Bancshares, Inc. and Subsidiaries Employee Stock Ownership Plan*

EX-99.5 5 d414067dex995.htm EX-99.5 Exhibit 99.5 LONE STAR STATE BANCSHARES, INC. AND SUBSIDIARIES EMPLOYEE STOCK OWNERSHIP PLAN ESOP PARTICIPANT VOTING INSTRUCTION STATEMENT January 31, 2023 To: Participants in the Lone Star State Bancshares, Inc. and Subsidiaries Employee Stock Ownership Plan As a participant in the Lone Star State Bancshares, Inc. and Subsidiaries Employee Stock Ownership Plan

January 30, 2023 S-4/A

As filed with the Securities and Exchange Commission on January 30, 2023

Table of Contents As filed with the Securities and Exchange Commission on January 30, 2023 Registration No.

January 30, 2023 EX-99.3

Form of Proxy for Special Meeting of Shareholders of First Bancshares of Texas, Inc.*

Exhibit 99.3 FIRST BANCSHARES OF TEXAS, INC. FIRST BANCSHARES OF TEXAS, INC. Proxy Special Meeting of Shareholders on Friday, March 3, 2023 at 10:00 a.m. To Be Held Virtually You may vote by: If choosing one of these options, sign & date card below. INTERNET https://FBOT.simplyvoting.com Enter Elector ID & Password found on Proxy Card Follow steps on secure website May vote until 11:59 p.m. CST on

January 30, 2023 CORRESP

Prosperity Bancshares, Inc. Prosperity Bank Plaza 4295 San Felipe Houston, Texas 77027

CORRESP 1 filename1.htm Prosperity Bancshares, Inc. Prosperity Bank Plaza 4295 San Felipe Houston, Texas 77027 January 30, 2023 VIA EDGAR United States Securities and Exchange Commission Division of Corporation Finance Office of Finance 100 F. Street, N.E. Washington, D.C. 20549 Attention: John Stickel Re: Prosperity Bancshares, Inc. Registration Statement on Form S-4 Filed January 11, 2023 File N

January 25, 2023 425

PROSPERITY BANCSHARES, INC.® REPORTS FOURTH QUARTER 2022 EARNINGS

Filed by Prosperity Bancshares, Inc. Pursuant to Rule 425 under the Securities Act of 1933 Subject Company: First Bancshares of Texas, Inc. Commission File Number: 333-269187 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.® Cullen Zalman Prosperity Bank Plaza Senior Vice President – Banking and Corporate Activities 4295 San Felipe 281.269.7199 Houston, Texas 77027 cullen.za

January 25, 2023 EX-99.1

PROSPERITY BANCSHARES, INC.® REPORTS FOURTH QUARTER 2022 EARNINGS

Exhibit 99.1 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.® Cullen Zalman Prosperity Bank Plaza Senior 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 2022 EARNINGS • Fourth quarter net income of $137.9 million a

January 25, 2023 425

PROSPERITY BANCSHARES, INC.® REPORTS FOURTH QUARTER 2022 EARNINGS

Filed by Prosperity Bancshares, Inc. Pursuant to Rule 425 under the Securities Act of 1933 Subject Company: Lone Star State Bancshares, Inc. Commission File Number: 333-269187 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.® Cullen Zalman Prosperity Bank Plaza Senior Vice President – Banking and Corporate Activities 4295 San Felipe 281.269.7199 Houston, Texas 77027 cullen.z

January 25, 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 25, 2023 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commissi

January 11, 2023 S-4

As filed with the Securities and Exchange Commission on January 11, 2023

Table of Contents As filed with the Securities and Exchange Commission on January 11, 2023 Registration No.

January 11, 2023 EX-99.1

Consent of Stephens, Inc.*

Exhibit 99.1 CONSENT OF STEPHENS INC. We hereby consent to the inclusion of our opinion letter to the Board of Directors of First Bancshares of Texas, Inc. (the “Company”) as an Appendix to the Proxy Statement/Prospectus relating to the proposed merger of the Company with and into Prosperity Bancshares, Inc. contained in the Registration Statement on Form S-4, as filed with the Securities and Exch

January 11, 2023 EX-FILING FEES

Filing Fee Table*

Exhibit 107 Calculation of Filing Fee Tables Form S-4 (Form Type) Prosperity Bancshares, Inc.

January 11, 2023 EX-8.4

Consent of Fenimore Kay Harrison LLP, included as part of its opinion filed as Exhibit 8.4 and incorporated herein by reference*

Exhibit 8.4 812 SAN ANTONIO STREET, SUITE 600 AUSTIN, TEXAS 78701 512-583-5900 | FAX: 512-583-5940 January 11, 2023 Lone Star State Bancshares, Inc. 6220 Milwaukee Avenue Lubbock, Texas 79424 Ladies and Gentlemen: We have acted as special counsel to Lone Star State Bancshares, Inc. (“Lone Star”), a Texas corporation, in connection with the proposed merger (the “Merger”) of Lone Star with and into

January 11, 2023 EX-99.2

Consent of Stephens, Inc.*

EX-99.2 9 d414067dex992.htm EX-99.2 Exhibit 99.2 CONSENT OF STEPHENS INC. We hereby consent to the inclusion of our opinion letter to the Board of Directors of Lone Star State Bancshares, Inc. (the “Company”) as an Appendix to the Proxy Statement/Prospectus relating to the proposed merger of the Company with and into Prosperity Bancshares, Inc. contained in the Registration Statement on Form S-4,

January 11, 2023 EX-8.3

Consent of Fenimore Kay Harrison LLP, included as part of its opinion filed as Exhibit 8.3 and incorporated herein by reference*

Exhibit 8.3 812 SAN ANTONIO STREET, SUITE 600 AUSTIN, TEXAS 78701 512-583-5900 | FAX: 512-583-5940 January 11, 2023 First Bancshares of Texas, Inc. 310 West Wall Street, Suite 1200 Midland, Texas 79701 Ladies and Gentlemen: We have acted as special counsel to First Bancshares of Texas, Inc. (“First Bancshares”), a Texas corporation, in connection with the proposed merger (the “Merger”) of First Ba

January 10, 2023 425

January 10, 2023

425 1 425lssbshrletter2022.htm 425 Filed by Prosperity Bancshares, Inc. Pursuant to Rule 425 under the Securities Act of 1933 Subject Company: Lone Star State Bancshares, Inc. Commission File Number: 001-35388 January 10, 2023 [Shareholder address] Dear Shareholder Happy New Year. 2022 was an excellent year for Lone Star State Bancshares. Our consolidated earnings are expected to be approximately

November 4, 2022 10-Q

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? 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: 001-35388 PROSP

October 31, 2022 425

6220 Milwaukee Ave.

Filed by Prosperity Bancshares, Inc. Pursuant to Rule 425 under the Securities Act of 1933 Subject Company: Lone Star State Bancshares, Inc. Commission File Number: 001-35388 October 31, 2022 [Shareholder address] Dear Shareholder, Greetings. One of the biggest goals and duties of the Board of Directors and management of Lone Star State Bancshares has been to do a good job for all of our sharehold

October 26, 2022 425

PROSPERITY BANCSHARES, INC.® REPORTS THIRD QUARTER 2022 EARNINGS

Filed by Prosperity Bancshares, Inc. Pursuant to Rule 425 under the Securities Act of 1933 Subject Company: Lone Star State Bancshares, Inc. Commission File Number: 001-35388 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.? Cullen Zalman Prosperity Bank Plaza Senior Vice President ? Banking and Corporate Activities 4295 San Felipe 281.269.7199 Houston, Texas 77027 cullen.za

October 26, 2022 425

PROSPERITY BANCSHARES, INC.® REPORTS THIRD QUARTER 2022 EARNINGS

Filed by Prosperity Bancshares, Inc. Pursuant to Rule 425 under the Securities Act of 1933 Subject Company: First Bancshares of Texas, Inc. Commission File Number: 000-11155 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.? Cullen Zalman Prosperity Bank Plaza Senior Vice President ? Banking and Corporate Activities 4295 San Felipe 281.269.7199 Houston, Texas 77027 cullen.zal

October 26, 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 26, 2022 PROSPERITY BANCS

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 26, 2022 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commissi

October 26, 2022 EX-99.1

PROSPERITY BANCSHARES, INC.® REPORTS THIRD QUARTER 2022 EARNINGS

Exhibit 99.1 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.? Cullen Zalman Prosperity Bank Plaza Senior Vice President ? Banking and Corporate Activities 4295 San Felipe 281.269.7199 Houston, Texas 77027 [email protected] FOR IMMEDIATE RELEASE PROSPERITY BANCSHARES, INC.? REPORTS THIRD QUARTER 2022 EARNINGS ? Third quarter net income of $135.8 million and

October 11, 2022 EX-99.2

PROSPERITY BANCSHARES, INC.® TO ACQUIRE LONE STAR STATE BANCSHARES, INC. IN LUBBOCK, TEXAS

Exhibit 99.2 PRESS RELEASE PROSPERITY BANCSHARES, INC.? TO ACQUIRE LONE STAR STATE BANCSHARES, INC. IN LUBBOCK, TEXAS FOR IMMEDIATE RELEASE HOUSTON AND LUBBOCK, TEXAS, October 11, 2022. Prosperity Bancshares, Inc.? (NYSE: PB) (?Prosperity?), the parent company of Prosperity Bank?, and Lone Star State Bancshares, Inc. (?Lone Star?), the parent company of Lone Star State Bank of West Texas (?Lone St

October 11, 2022 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): October 11, 2022 PROSPERITY BANCS

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 11, 2022 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commissi

October 11, 2022 EX-99.3

PROSPERITY BANCSHARES, INC.® TO ACQUIRE FIRST BANCSHARES OF TEXAS, INC. IN MIDLAND, TEXAS

Exhibit 99.3 PRESS RELEASE PROSPERITY BANCSHARES, INC.? TO ACQUIRE FIRST BANCSHARES OF TEXAS, INC. IN MIDLAND, TEXAS FOR IMMEDIATE RELEASE HOUSTON AND MIDLAND, TEXAS, October 11, 2022. Prosperity Bancshares, Inc.? (NYSE: PB) (?Prosperity?), the parent company of Prosperity Bank?, and First Bancshares of Texas, Inc. (?First Bancshares?), the parent holding company of FirstCapital Bank of Texas, N.A

October 11, 2022 EX-99.2

PROSPERITY BANCSHARES, INC.® TO ACQUIRE LONE STAR STATE BANCSHARES, INC. IN LUBBOCK, TEXAS

Exhibit 99.2 PRESS RELEASE PROSPERITY BANCSHARES, INC.? TO ACQUIRE LONE STAR STATE BANCSHARES, INC. IN LUBBOCK, TEXAS FOR IMMEDIATE RELEASE HOUSTON AND LUBBOCK, TEXAS, October 11, 2022. Prosperity Bancshares, Inc.? (NYSE: PB) (?Prosperity?), the parent company of Prosperity Bank?, and Lone Star State Bancshares, Inc. (?Lone Star?), the parent company of Lone Star State Bank of West Texas (?Lone St

October 11, 2022 EX-99.1

Important Information 2 Cautionary Notes on Forward Looking Statements “Safe Harbor” Statement under the Private Securities Litigation Reform Act of 1995: This release contains forward-looking statements within the meaning of the federal securities l

October 11, 2022 Announces the acquisitions of First Bancshares of Texas, Inc. and Lone Star State Bancshares, Inc. Exhibit 99.1 Important Information 2 Cautionary Notes on Forward Looking Statements ?Safe Harbor? Statement under the Private Securities Litigation Reform Act of 1995: This release contains forward-looking statements within the meaning of the federal securities laws, including Sectio

October 11, 2022 EX-99.1

Important Information 2 Cautionary Notes on Forward Looking Statements “Safe Harbor” Statement under the Private Securities Litigation Reform Act of 1995: This release contains forward-looking statements within the meaning of the federal securities l

October 11, 2022 Announces the acquisitions of First Bancshares of Texas, Inc. and Lone Star State Bancshares, Inc. Exhibit 99.1 Important Information 2 Cautionary Notes on Forward Looking Statements ?Safe Harbor? Statement under the Private Securities Litigation Reform Act of 1995: This release contains forward-looking statements within the meaning of the federal securities laws, including Sectio

October 11, 2022 EX-99.2

PROSPERITY BANCSHARES, INC.® TO ACQUIRE LONE STAR STATE BANCSHARES, INC. IN LUBBOCK, TEXAS

Exhibit 99.2 PRESS RELEASE PROSPERITY BANCSHARES, INC.? TO ACQUIRE LONE STAR STATE BANCSHARES, INC. IN LUBBOCK, TEXAS FOR IMMEDIATE RELEASE HOUSTON AND LUBBOCK, TEXAS, October 11, 2022. Prosperity Bancshares, Inc.? (NYSE: PB) (?Prosperity?), the parent company of Prosperity Bank?, and Lone Star State Bancshares, Inc. (?Lone Star?), the parent company of Lone Star State Bank of West Texas (?Lone St

October 11, 2022 EX-99.1

Important Information 2 Cautionary Notes on Forward Looking Statements “Safe Harbor” Statement under the Private Securities Litigation Reform Act of 1995: This release contains forward-looking statements within the meaning of the federal securities l

October 11, 2022 Announces the acquisitions of First Bancshares of Texas, Inc. and Lone Star State Bancshares, Inc. Exhibit 99.1 Important Information 2 Cautionary Notes on Forward Looking Statements ?Safe Harbor? Statement under the Private Securities Litigation Reform Act of 1995: This release contains forward-looking statements within the meaning of the federal securities laws, including Sectio

October 11, 2022 8-K

Regulation FD Disclosure, 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): October 11, 2022 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commissi

October 11, 2022 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): October 11, 2022 PROSPERITY BANCS

.Filed by Prosperity Bancshares, Inc. pursuant to Rule 425 under the Securities Act of 1933. Subject Company: Lone Star State Bancshares, Inc. Commission File Number: 021-112510 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): Octob

October 11, 2022 EX-99.3

PROSPERITY BANCSHARES, INC.® TO ACQUIRE FIRST BANCSHARES OF TEXAS, INC. IN MIDLAND, TEXAS

Exhibit 99.3 PRESS RELEASE PROSPERITY BANCSHARES, INC.? TO ACQUIRE FIRST BANCSHARES OF TEXAS, INC. IN MIDLAND, TEXAS FOR IMMEDIATE RELEASE HOUSTON AND MIDLAND, TEXAS, October 11, 2022. Prosperity Bancshares, Inc.? (NYSE: PB) (?Prosperity?), the parent company of Prosperity Bank?, and First Bancshares of Texas, Inc. (?First Bancshares?), the parent holding company of FirstCapital Bank of Texas, N.A

October 11, 2022 EX-99.3

PROSPERITY BANCSHARES, INC.® TO ACQUIRE FIRST BANCSHARES OF TEXAS, INC. IN MIDLAND, TEXAS

Exhibit 99.3 PRESS RELEASE PROSPERITY BANCSHARES, INC.? TO ACQUIRE FIRST BANCSHARES OF TEXAS, INC. IN MIDLAND, TEXAS FOR IMMEDIATE RELEASE HOUSTON AND MIDLAND, TEXAS, October 11, 2022. Prosperity Bancshares, Inc.? (NYSE: PB) (?Prosperity?), the parent company of Prosperity Bank?, and First Bancshares of Texas, Inc. (?First Bancshares?), the parent holding company of FirstCapital Bank of Texas, N.A

October 6, 2022 EX-99.1

PROSPERITY BANCSHARES, INC.® ANNOUNCES DIRECTOR CHANGES

Exhibit 99.1 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.? Cullen Zalman Prosperity Bank Plaza Senior Vice President ? Banking and Corporate Activities 4295 San Felipe 281.269.7199 Houston, Texas 77027 [email protected] FOR IMMEDIATE RELEASE PROSPERITY BANCSHARES, INC.? ANNOUNCES DIRECTOR CHANGES HOUSTON, October 6, 2022. Prosperity Bancshares, Inc.? (N

October 6, 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): October 4, 2022 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commissio

August 4, 2022 10-Q

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? 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: 001-35388 PROSPERITY

July 27, 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 27, 2022 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commission

July 27, 2022 EX-99.1

PROSPERITY BANCSHARES, INC.® REPORTS SECOND QUARTER 2022 EARNINGS

Exhibit 99.1 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.? Cullen Zalman Prosperity Bank Plaza Senior Vice President ? Banking and Corporate Activities 4295 San Felipe 281.269.7199 Houston, Texas 77027 [email protected] FOR IMMEDIATE RELEASE PROSPERITY BANCSHARES, INC.? REPORTS SECOND QUARTER 2022 EARNINGS ? Second quarter net income of $128.5 million a

June 29, 2022 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K FOR ANNUAL REPORTS OF EMPLOYEE STOCK PURCHASE, SAVINGS AND SIMILAR PLANS PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K FOR ANNUAL REPORTS OF EMPLOYEE STOCK PURCHASE, SAVINGS AND SIMILAR PLANS PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (Mark One) [ X ] ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 OR [ ] TRANSITION REPO

May 5, 2022 10-Q

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED March 31, 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: 001-35388 PROSPERIT

April 27, 2022 EX-99.1

PROSPERITY BANCSHARES, INC.® REPORTS FIRST QUARTER 2022 EARNINGS

Exhibit 99.1 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.? Cullen Zalman Prosperity Bank Plaza Senior Vice President ? Banking and Corporate Activities 4295 San Felipe 281.269.7199 Houston, Texas 77027 [email protected] FOR IMMEDIATE RELEASE PROSPERITY BANCSHARES, INC.? REPORTS FIRST QUARTER 2022 EARNINGS ? First quarter net income of $122.3 million and

April 27, 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): April 27, 2022 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commission

April 22, 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): April 19, 2022 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commission

March 14, 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 (Amendment No. )

DEF 14A 1 pb-def14a20220419.htm 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. ) 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 (a

February 28, 2022 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 (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For The Fiscal Year Ended December 31, 2021 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 001-35388 PROSPERITY BANC

February 28, 2022 EX-21.1

Subsidiaries of Prosperity Bancshares, Inc. (incorporated herein by reference to Exhibit 21.1 to the Registrant’s Annual Report on Form 10-K for the year ended December 31, 2021)

Exhibit 21.1 PROSPERITY BANCSHARES, INC. LIST OF SUBSIDIARIES Direct Subsidiaries Jurisdiction of Organization Parent Entity Prosperity Bank Texas Prosperity Bancshares, Inc. Prosperity Interim Corporation Texas Prosperity Bancshares, Inc. Indirect Subsidiaries Jurisdiction of Organization Parent Entity Coppermark Card Services, Inc. Oklahoma Prosperity Bank Citizens Insurance Agency of Texas, Inc

February 10, 2022 SC 13G/A

PB / Prosperity Bancshares, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 13)* Name of issuer: Prosperity Bancshares Inc. Title of Class of Securities: Common Stock CUSIP Number: 743606105 Date of Event Which Requires Filing of this Statement: December 31, 2021 Check the appropriate box to designate the rule pursuant to which this Schedule is

January 26, 2022 EX-99.1

PROSPERITY BANCSHARES, INC.® REPORTS FOURTH QUARTER 2021 EARNINGS

EX-99.1 2 pb-ex9916.htm EX-99.1 Exhibit 99.1 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.® Cullen Zalman Prosperity Bank Plaza Senior 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 2021 EARNINGS • Fourth quarte

January 26, 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): January 26, 2022 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commissi

November 4, 2021 10-Q

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED September 30, 2021 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: 001-35388 PROSP

October 27, 2021 EX-99.1

PROSPERITY BANCSHARES, INC.® REPORTS THIRD QUARTER 2021 EARNINGS

Exhibit 99.1 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.? Cullen Zalman Prosperity Bank Plaza Senior Vice President ? Banking and Corporate Activities 4295 San Felipe 281.269.7199 Houston, Texas 77027 [email protected] FOR IMMEDIATE RELEASE PROSPERITY BANCSHARES, INC.? REPORTS THIRD QUARTER 2021 EARNINGS ? Third quarter earnings per share (diluted) of

October 27, 2021 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, 2021 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commissi

August 5, 2021 10-Q

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED June 30, 2021 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: 001-35388 PROSPERITY

July 28, 2021 EX-99.1

PROSPERITY BANCSHARES, INC.® REPORTS SECOND QUARTER 2021 EARNINGS

EX-99.1 2 pb-ex9916.htm EX-99.1 Exhibit 99.1 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.® Cullen Zalman Prosperity Bank Plaza Senior Vice President – Banking and Corporate Activities 4295 San Felipe 281.269.7199 Houston, Texas 77027 [email protected] FOR IMMEDIATE RELEASE PROSPERITY BANCSHARES, INC.® REPORTS SECOND QUARTER 2021 EARNINGS • Second quarte

July 28, 2021 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, 2021 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commission

June 28, 2021 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K FOR ANNUAL REPORTS OF EMPLOYEE STOCK PURCHASE, SAVINGS AND SIMILAR PLANS PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K FOR ANNUAL REPORTS OF EMPLOYEE STOCK PURCHASE, SAVINGS AND SIMILAR PLANS PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (Mark One) [ X ] ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 OR [ ] TRANSITION REPO

May 6, 2021 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED March 31, 2021 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: 001-35388 PROSPERIT

April 28, 2021 EX-99.1

PROSPERITY BANCSHARES, INC.® REPORTS FIRST QUARTER 2021 EARNINGS

Exhibit 99.1 S PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.? Cullen Zalman Prosperity Bank Plaza Senior Vice President ? Banking and Corporate Activities 4295 San Felipe 281.269.7199 Houston, Texas 77027 [email protected] FOR IMMEDIATE RELEASE PROSPERITY BANCSHARES, INC.? REPORTS FIRST QUARTER 2021 EARNINGS ? First quarter earnings per share (diluted) o

April 28, 2021 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): April 28, 2021 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commission

April 22, 2021 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): April 20, 2021 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commission

April 12, 2021 SC 13G/A

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 12)*

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 12)* Name of issuer: Prosperity Bancshares Inc. Title of Class of Securities: Common Stock CUSIP Number: 743606105 Date of Event Which Requires Filing of this Statement: March 31, 2021 Check the appropriate box to designate the rule pursuant to which this Schedule is fil

March 15, 2021 DEF 14A

- 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. ) 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)) ? Defin

March 11, 2021 EX-10.1

Executive Employment Agreement, dated as of March 10, 2021, by and among Prosperity Bancshares, Inc., Prosperity Bank and Edward Z. Safady (incorporated herein by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on March 11, 2021)

Exhibit 10.1 Executive Employment Agreement This Executive Employment Agreement (the ?Agreement?) is made and entered into by and among Prosperity Bancshares, Inc., a Texas corporation (?Bancshares?), Prosperity Bank (the ?Bank?), a Texas banking association and wholly owned subsidiary of Bancshares, and Edward Z. Safady, an individual who resides in Texas (?Executive?). Bancshares and the Bank ar

March 11, 2021 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): March 10, 2021 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commission

February 26, 2021 EX-21.1

Subsidiaries of Prosperity Bancshares, Inc.

Exhibit 21.1 PROSPERITY BANCSHARES, INC. LIST OF SUBSIDIARIES Direct Subsidiaries Jurisdiction of Organization Parent Entity Prosperity Bank Texas Prosperity Bancshares, Inc. Prosperity Interim Corporation Texas Prosperity Bancshares, Inc. Indirect Subsidiaries Jurisdiction of Organization Parent Entity Coppermark Card Services, Inc. Oklahoma Prosperity Bank Citizens Insurance Agency of Texas, Inc

February 26, 2021 10-K

Annual Report - 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For The Fiscal Year Ended December 31, 2020 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 001-35388 PROSPERITY BANC

February 10, 2021 SC 13G/A

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 11)*

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 11)* Name of issuer: Prosperity Bancshares Inc. Title of Class of Securities: Common Stock CUSIP Number: 743606105 Date of Event Which Requires Filing of this Statement: December 31, 2020 Check the appropriate box to designate the rule pursuant to which this Schedule is

January 27, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition - 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, 2021 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commissi

January 27, 2021 EX-99.1

PROSPERITY BANCSHARES, INC.® REPORTS FOURTH QUARTER 2020 EARNINGS

Exhibit 99.1 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.® Cullen Zalman Prosperity Bank Plaza Senior 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 2020 EARNINGS • Fourth quarter earnings per share (diluted) o

November 5, 2020 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED September 30, 2020 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: 001-35388 PROSP

October 28, 2020 EX-99.1

PROSPERITY BANCSHARES, INC.® REPORTS THIRD QUARTER 2020 EARNINGS

Exhibit 99.1 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.® Cullen Zalman Prosperity Bank Plaza Vice President – Banking and Corporate Activities 4295 San Felipe 281.269.7199 Houston, Texas 77027 [email protected] FOR IMMEDIATE RELEASE PROSPERITY BANCSHARES, INC.® REPORTS THIRD QUARTER 2020 EARNINGS • Third quarter earnings per share (diluted) of $1.40,

October 28, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition - 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, 2020 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commissi

August 10, 2020 SC 13G/A

PB / Prosperity Bancshares, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 10)* Name of issuer: Prosperity Bancshares Inc. Title of Class of Securities: Common Stock CUSIP Number: 743606105 Date of Event Which Requires Filing of this Statement: July 31, 2020 Check the appropriate box to designate the rule pursuant to which this Schedule is file

August 10, 2020 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED June 30, 2020 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: 001-35388 PROSPERITY

July 29, 2020 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 29, 2020 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commission

July 29, 2020 EX-99.1

PROSPERITY BANCSHARES, INC.® REPORTS SECOND QUARTER 2020 EARNINGS

Exhibit 99.1 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.® Cullen Zalman Prosperity Bank Plaza Vice President – Banking and Corporate Activities 4295 San Felipe 281.269.7199 Houston, Texas 77027 [email protected] FOR IMMEDIATE RELEASE PROSPERITY BANCSHARES, INC.® REPORTS SECOND QUARTER 2020 EARNINGS • Second quarter earnings per share (diluted) of $1.41

June 25, 2020 11-K

- 11-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K FOR ANNUAL REPORTS OF EMPLOYEE STOCK PURCHASE, SAVINGS AND SIMILAR PLANS PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (Mark One) [ X ] ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 OR [ ] TRANSITION REPO

May 8, 2020 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED March 31, 2020 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: 001-35388 PROSPERIT

April 29, 2020 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): April 29, 2020 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commission

April 29, 2020 EX-99.1

PROSPERITY BANCSHARES, INC.® REPORTS FIRST QUARTER 2020 EARNINGS

Exhibit 99.1 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.® Cullen Zalman Prosperity Bank Plaza Vice President – Banking and Corporate Activities 4295 San Felipe 281.269.7199 Houston, Texas 77027 [email protected] FOR IMMEDIATE RELEASE PROSPERITY BANCSHARES, INC.® REPORTS FIRST QUARTER 2020 EARNINGS • First quarter earnings per share (diluted) of $1.39,

April 22, 2020 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 21, 2020 PROSPERITY BANCSHA

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 21, 2020 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commission

April 21, 2020 EX-4.4

Form of Prosperity Bancshares, Inc. Restricted Stock Award Agreement for Non-employee Directors.

EX-4.4 Exhibit 4.4 Form of Prosperity Bancshares, Inc. Restricted Stock Award Agreement for Non-employee Directors This Restricted Stock Award Agreement (this “Agreement”) is made and entered into as of [DATE] (the “Grant Date”) by and between Prosperity Bancshares, Inc., a Texas corporation (the “Company”) and [DIRECTOR NAME] (the “Grantee”). WHEREAS, the Company has adopted the Prosperity Bancsh

April 21, 2020 EX-4.3

Form of Prosperity Bancshares, Inc. Restricted Stock Award Agreement for Employees.

EX-4.3 Exhibit 4.3 Form of Prosperity Bancshares, Inc. Restricted Stock Award Agreement for Employees This Restricted Stock Award Agreement (this “Agreement”) is made and entered into as of [DATE] (the “Grant Date”) by and between Prosperity Bancshares, Inc., a Texas corporation (the “Company”) and [EMPLOYEE NAME] (the “Grantee”). WHEREAS, the Company has adopted the Prosperity Bancshares, Inc. 20

April 21, 2020 S-8

PB / Prosperity Bancshares, Inc. S-8 - - S-8

S-8 As filed with the Securities and Exchange Commission on April 21, 2020 Registration No.

March 18, 2020 DEF 14A

Prosperity Bancshares, Inc. 2020 Stock Incentive Plan (incorporated herein by reference to Appendix A to the Company's Schedule 14A filed on March 18, 2020)

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 14a-6(e)(2)) ☒ Defin

February 28, 2020 EX-4.2

Description of Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934 (incorporated herein by reference to Exhibit 4.1 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2019)

Exhibit 4.2 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 Prosperity Bancshares, Inc. has one class of securities registered under Section 12 of the Securities Exchange Act of 1934, as amended: its common stock, par value $1.00 per share (the “common stock”). As used in this exhibit, the terms “Prosperity,” “we,” “us” and “our”

February 28, 2020 EX-21.1

Subsidiaries of Prosperity Bancshares, Inc.

Exhibit 21.1 PROSPERITY BANCSHARES, INC. LIST OF SUBSIDIARIES Direct Subsidiaries Jurisdiction of Organization Parent Entity Prosperity Bank Texas Prosperity Bancshares, Inc. Prosperity Interim Corporation Texas Prosperity Bancshares, Inc. Indirect Subsidiaries Jurisdiction of Organization Parent Entity Coppermark Card Services, Inc. Oklahoma Prosperity Bank Citizens Insurance Agency of Texas, Inc

February 28, 2020 10-K

Annual Report - 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For The Fiscal Year Ended December 31, 2019 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 001-35388 PROSPERITY BANC

February 12, 2020 SC 13G/A

PB / Prosperity Bancshares, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 9)* Name of issuer: Prosperity Bancshares Inc Title of Class of Securities: Common Stock CUSIP Number: 743606105 Date of Event Which Requires Filing of this Statement: December 31, 2019 Check the appropriate box to designate the rule pursuant to which this Schedule is fi

January 30, 2020 SC 13G/A

PB / Prosperity Bancshares, Inc. / VICTORY CAPITAL MANAGEMENT INC Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 ( Amendment No. )* Prosperity Bancshares Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 743606105 (CUSIP Number) December 31, 2019 (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which t

January 29, 2020 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 29, 2020 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commissi

January 29, 2020 EX-99.1

PROSPERITY BANCSHARES, INC.® REPORTS FOURTH QUARTER 2019 EARNINGS

Exhibit 99.1 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.® Cullen Zalman Prosperity Bank Plaza 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 2019 EARNINGS • Completed the merger with LegacyTexas Financial Grou

January 17, 2020 EX-21.1

Consent of Ernst & Young LLP, independent registered public accounting firm for LegacyTexas.

EX-21.1 Exhibit 21.1 Consent of Independent Registered Public Accounting Firm We consent to the incorporation by reference in the following Registration Statements: (1) Registration Statement (Form S-8 No. 333-194046) pertaining to the 2012 Stock Incentive Plan of Prosperity Bancshares, Inc., and (2) Registration Statement (Form S-8 No. 333-123366) pertaining to the 2004 Stock Incentive Plan of Pr

January 17, 2020 EX-99.1

LEGACYTEXAS FINANCIAL GROUP, INC. FINANCIAL STATEMENTS December 31, 2018, 2017, and 2016 Page REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 2 CONSOLIDATED FINANCIAL STATEMENTS Consolidated Balance Sheets 3 Consolidated Statements of Income

EX-99.1 Exhibit 99.1 LEGACYTEXAS FINANCIAL GROUP, INC. FINANCIAL STATEMENTS December 31, 2018, 2017, and 2016 INDEX Page REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 2 CONSOLIDATED FINANCIAL STATEMENTS Consolidated Balance Sheets 3 Consolidated Statements of Income 4 Consolidated Statements of Comprehensive Income 5 Consolidated Statements of Changes in Shareholders’ Equity 6 Consolidat

January 17, 2020 EX-99.2

LEGACYTEXAS FINANCIAL GROUP, INC. FINANCIAL STATEMENTS June 30, 2019 Consolidated Balance Sheets at June 30, 2019 (unaudited) and December 31, 2018 2 Consolidated Statements of Income (unaudited) for the three and six months ended June 30, 2019 and 2

EX-99.2 Exhibit 99.2 LEGACYTEXAS FINANCIAL GROUP, INC. FINANCIAL STATEMENTS June 30, 2019 INDEX Consolidated Balance Sheets at June 30, 2019 (unaudited) and December 31, 2018 2 Consolidated Statements of Income (unaudited) for the three and six months ended June 30, 2019 and 2018 3 Consolidated Statements of Comprehensive Income (unaudited) for the three and six months ended June 30, 2019 and 2018

January 17, 2020 EX-99.3

UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL INFORMATION RELATING TO THE MERGER WITH LEGACYTEXAS FINANCIAL GROUP, INC.

EX-99.3 Exhibit 99.3 UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL INFORMATION RELATING TO THE MERGER WITH LEGACYTEXAS FINANCIAL GROUP, INC. On November 1, 2019, pursuant to the Agreement and Plan of Reorganization, dated as of June 16, 2019 (the “Merger Agreement”), by and between LegacyTexas Financial Group, Inc., a Maryland corporation (“LegacyTexas”), and Prosperity Bancshares, Inc., a Texa

January 17, 2020 8-K/A

Financial Statements and Exhibits

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): November 1, 2019 Prosperity Bancshares, Inc. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of inco

November 8, 2019 SC 13G/A

PB / Prosperity Bancshares, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 8)* Name of issuer: Prosperity Bancshares Inc Title of Class of Securities: Common Stock CUSIP Number: 743606105 Date of Event Which Requires Filing of this Statement: October 31, 2019 Check the appropriate box to designate the rule pursuant to which this Schedule is fil

November 7, 2019 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 2019 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: 001-35388 PROSP

November 1, 2019 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Completion of Acquisition or Disposition of Assets, 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 1, 2019 Prosperity Bancshares, Inc. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commissi

November 1, 2019 EX-99.1

PROSPERITY BANCSHARES, INC. ® COMPLETES MERGER WITH LEGACYTEXAS FINANCIAL GROUP, INC.

EX-99.1 Exhibit 99.1 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.® David Zalman Prosperity Bank Plaza Chairman and Chief Executive Officer 4295 San Felipe 281.269.7199 Houston, Texas 77027 [email protected] PROSPERITY BANCSHARES, INC. ® COMPLETES MERGER WITH LEGACYTEXAS FINANCIAL GROUP, INC. FOR IMMEDIATE RELEASE HOUSTON, November 1, 2019. Prosperity Ban

October 30, 2019 S-4MEF

PB / Prosperity Bancshares, Inc. S-4MEF - - S-4MEF

S-4MEF As filed with the Securities and Exchange Commission on October 30, 2019 Registration No.

October 30, 2019 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): October 29, 2019 Prosperity Bancshares, Inc. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commissi

October 24, 2019 425

PB / Prosperity Bancshares, Inc. 425 - Merger Prospectus - 425

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 Form S-4 File No.: 333-233443 Subject Company: LegacyTexas Financial Group, Inc. Commission File Number: 001-34737 As previously announced, Prosperity Bancshares, Inc. hosted a conference call on October 23, 2019 at 11:30

October 23, 2019 425

PB / Prosperity Bancshares, Inc. 425 - Merger Prospectus - 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: LegacyTexas Financial Group, Inc. Commission File Number: 001-34737 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.® Cullen Zalman Prosperity Bank Plaza Vice President – Banking and Cor

October 23, 2019 EX-99.1

PROSPERITY BANCSHARES, INC.® REPORTS THIRD QUARTER 2019 EARNINGS

Exhibit 99.1 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.® Cullen Zalman Prosperity Bank Plaza Vice President – Banking and Corporate Activities 4295 San Felipe 281.269.7199 Houston, Texas 77027 [email protected] FOR IMMEDIATE RELEASE PROSPERITY BANCSHARES, INC.® REPORTS THIRD QUARTER 2019 EARNINGS • Third quarter earnings per common share (diluted) of

October 23, 2019 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 23, 2019 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commissi

October 9, 2019 425

PB / Prosperity Bancshares, Inc. 425 - Merger Prospectus - 425

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 Form S-4 File No.: 333-233443 Subject Company: LegacyTexas Financial Group, Inc. Commission File Number: 001-34737 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to

October 9, 2019 EX-99.1

PROSPERITY BANCSHARES RECEIVES REGULATORY APPROVAL FOR LEGACYTEXAS FINANCIAL GROUP MERGER

EX-99.1 Exhibit 99.1 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.® David Zalman Prosperity Bank Plaza Chairman and Chief Executive Officer 4295 San Felipe 281.269.7199 Houston, Texas 77027 [email protected] PROSPERITY BANCSHARES RECEIVES REGULATORY APPROVAL FOR LEGACYTEXAS FINANCIAL GROUP MERGER FOR IMMEDIATE RELEASE HOUSTON, October 8, 2019. Prosperity

October 9, 2019 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): October 8, 2019 Prosperity Bancshares, Inc. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commissio

September 17, 2019 DEFM14A

PB / Prosperity Bancshares, Inc. DEFM14A - - DEFM14A

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

September 17, 2019 424B3

MERGER PROPOSED—YOUR VOTE IS VERY IMPORTANT

424B3 Table of Contents Filed Pursuant to Rule No. 424(b)(3) Registration No. 333-233443 Proxy Statement and Prospectus of Prosperity Bancshares, Inc. Proxy Statement of LegacyTexas Financial Group, Inc. MERGER PROPOSED—YOUR VOTE IS VERY IMPORTANT Dear Shareholder: On June 16, 2019, LegacyTexas Financial Group, Inc., or “Legacy,” and Prosperity Bancshares, Inc., or “Prosperity,” entered into an Ag

September 16, 2019 EX-99.7

Form of Proxy for Special Meeting of Shareholders of Prosperity*

EX-99.7 Exhibit 99.7 Using a black ink pen, mark your votes with an X as shown in this example. ☒ Please do not write outside the designated areas. Your vote matters – here’s how to vote! You may vote online or by phone instead of mailing this card. Votes submitted electronically must be received by 11:59pm, Central Time, on October 28, 2019. Online Go to www.investorvote.com/PB or scan the QR cod

September 16, 2019 EX-99.1

Consent of Keefe, Bruyette & Woods, Inc.*

EX-99.1 Exhibit 99.1 CONSENT OF KEEFE, BRUYETTE & WOODS, INC. We hereby consent to the inclusion of our opinion letter to the Board of Directors of Prosperity Bancshares, Inc. (“Prosperity”), as Appendix C to the Joint Proxy Statement/Prospectus which forms a part of Amendment No. 1 to the Registration Statement on Form S-4 filed on the date hereof (the “Registration Statement”) relating to the pr

September 16, 2019 EX-99.6

Form of Proxy for Special Meeting of Stockholders of Legacy*

EX-99.6 Exhibit 99.6 REVOCABLE PROXY LegacyTexas Financial Group, Inc. SPECIAL MEETING OF SHAREHOLDERS OCTOBER 28, 2019 THIS PROXY IS SOLICITED BY THE BOARD OF DIRECTORS The signer(s) on the reverse side hereby appoint(s) the Board of Directors of LegacyTexas Financial Group, Inc., with full powers of substitution, to act as attorneys and proxies, to vote all shares of common stock of LegacyTexas

September 16, 2019 S-4/A

PB / Prosperity Bancshares, Inc. S-4/A - - S-4/A

S-4/A Table of Contents As filed with the Securities and Exchange Commission on September 16, 2019 Registration No.

September 16, 2019 EX-99.2

Consent of J.P. Morgan Securities LLC*

EX-99.2 Exhibit 99.2 CONSENT OF J.P. MORGAN SECURITIES LLC We hereby consent to (i) the use of our opinion letter dated June 14, 2019 to the Board of Directors of LegacyTexas Financial Group, Inc. (“Legacy”) included in Appendix B to the Joint Proxy Statement/Prospectus which forms a part of Amendment No. 1 to the registration statement on Form S-4 (the “Registration Statement”) filed by Prosperit

September 16, 2019 CORRESP

PB / Prosperity Bancshares, Inc. CORRESP - -

CORRESP Prosperity Bancshares, Inc. Prosperity Bank Plaza 4295 San Felipe Houston, Texas 77027 September 16, 2019 VIA EDGAR United States Securities and Exchange Commission Division of Corporation Finance Office of Financial Services 100 F Street, N.E. Washington, D.C. 20549 Attention: Jessica Livingston Re: Prosperity Bancshares, Inc. Draft Registration Statement on Form S-4 Filed August 23, 2019

September 16, 2019 CORRESP

PB / Prosperity Bancshares, Inc. CORRESP - -

CORRESP Prosperity Bancshares, Inc. Prosperity Bank Plaza 4295 San Felipe Houston, Texas 77027 September 16, 2019 VIA EDGAR United States Securities and Exchange Commission Division of Corporation Finance Office of Financial Services 100 F Street, N.E. Washington, D.C. 20549 Attention: Jessica Livingston Re: Prosperity Bancshares, Inc. Registration Statement on Form S-4 (File No. 333-233443) Dear

August 23, 2019 EX-99.1

Consent of Keefe, Bruyette & Woods, Inc.*

EX-99.1 Exhibit 99.1 CONSENT OF KEEFE, BRUYETTE & WOODS, INC. We hereby consent to the inclusion of our opinion letter to the Board of Directors of Prosperity Bancshares, Inc. (“Prosperity”), as Appendix C to the Joint Proxy Statement/Prospectus which forms a part of the Registration Statement on Form S-4 filed on the date hereof (the “Registration Statement”) relating to the proposed merger of Le

August 23, 2019 EX-99.4

Consent of Kevin J. Hanigan*

EX-99.4 Exhibit 99.4 Consent of Person Named as About to Become Director Pursuant to Rule 438 promulgated under the Securities Act of 1933, as amended, in connection with the contemplated merger of LegacyTexas Financial Group, Inc. with and into Prosperity Bancshares, Inc. (“Prosperity”), I hereby consent to being named in the Registration Statement on Form S-4, and all amendments and supplements

August 23, 2019 EX-99.2

Consent of J.P. Morgan Securities LLC*

EX-99.2 Exhibit 99.2 CONSENT OF J.P. MORGAN SECURITIES LLC We hereby consent to (i) the use of our opinion letter dated June 14, 2019 to the Board of Directors of LegacyTexas Financial Group, Inc. (“Legacy”) included in Appendix B to the Joint Proxy Statement/Prospectus which forms a part of the registration statement on Form S-4 (the “Registration Statement”) filed by Prosperity Bancshares, Inc.

August 23, 2019 S-4

Power of Attorney**

S-4 Table of Contents As filed with the Securities and Exchange Commission on August 23, 2019 Registration No.

August 23, 2019 EX-99.5

Consent of Bruce W. Hunt*

EX-99.5 Exhibit 99.5 Consent of Person Named as About to Become Director Pursuant to Rule 438 promulgated under the Securities Act of 1933, as amended, in connection with the contemplated merger of LegacyTexas Financial Group, Inc. with and into Prosperity Bancshares, Inc. (“Prosperity”), I hereby consent to being named in the Registration Statement on Form S-4, and all amendments and supplements

August 23, 2019 EX-99.3

Consent of George A. Fisk*

EX-99.3 Exhibit 99.3 Consent of Person Named as About to Become Director Pursuant to Rule 438 promulgated under the Securities Act of 1933, as amended, in connection with the contemplated merger of LegacyTexas Financial Group, Inc. with and into Prosperity Bancshares, Inc. (“Prosperity”), I hereby consent to being named in the Registration Statement on Form S-4, and all amendments and supplements

August 2, 2019 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED JUNE 30, 2019 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: 001-35388 PROSPERITY

July 30, 2019 425

PB / Prosperity Bancshares, Inc. 425 - Merger Prospectus - 425

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: LegacyTexas Financial Group, Inc. Commission File Number: 001-34737 Prosperity Bancshares, Inc. participated in the Community Bank Investor Conference hosted by Keefe, Bruyette & Woods on July 30, 2019. A

July 24, 2019 425

PB / Prosperity Bancshares, Inc. 425 - Merger Prospectus - 425

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: LegacyTexas Financial Group, Inc. Commission File Number: 001-34737 As previously announced, Prosperity Bancshares, Inc. hosted a conference call on July 24, 2019 at 11:30 a.m. Eastern Time (10:30 a.m. Cen

July 24, 2019 425

PB / Prosperity Bancshares, Inc. 425 - Merger Prospectus - 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: LegacyTexas Financial Group, Inc. Commission File Number: 001-34737 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.® Cullen Zalman Prosperity Bank Plaza Vice President – Banking and Cor

July 24, 2019 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 24, 2019 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commission

July 24, 2019 EX-99.1

PROSPERITY BANCSHARES, INC.® REPORTS SECOND QUARTER 2019 EARNINGS

Exhibit 99.1 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.® Cullen Zalman Prosperity Bank Plaza Vice President – Banking and Corporate Activities 4295 San Felipe 281.269.7199 Houston, Texas 77027 [email protected] FOR IMMEDIATE RELEASE PROSPERITY BANCSHARES, INC.® REPORTS SECOND QUARTER 2019 EARNINGS • Second quarter earnings per common share (diluted) o

June 28, 2019 11-K

PB / Prosperity Bancshares, Inc. 11-K - - 11-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K FOR ANNUAL REPORTS OF EMPLOYEE STOCK PURCHASE, SAVINGS AND SIMILAR PLANS PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (Mark One) [ X ] ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2018 OR [ ] TRANSITION REPO

June 20, 2019 EX-3.1

Amended and Restated Bylaws of Prosperity Bancshares, Inc. (incorporated herein by reference to Exhibit 3.1 to the Registrant’s Current Report on Form 8-K filed June 20, 2019)

EX-3.1 Exhibit 3.1 AMENDED AND RESTATED BYLAWS OF PROSPERITY BANCSHARES, INC. A Texas Corporation Date of Adoption June 14, 2019 TABLE OF CONTENTS Page ARTICLE 1 OFFICES Section 1.1 Registered Office 1 Section 1.2 Other Offices 1 ARTICLE 2 SHAREHOLDERS Section 2.1 Place of Meetings 1 Section 2.2 Quorum; Adjournment of Meetings 1 Section 2.3 Annual Meetings 1 Section 2.4 Special Meetings 2 Section

June 20, 2019 EX-10.3

Form of Director Support Agreement dated as of June 16, 2019 (incorporated herein by reference to Exhibit 10.3 the Company’s Current Report on Form 8‑K filed on June 20, 2019)

EX-10.3 Exhibit 10.3 DIRECTOR SUPPORT AGREEMENT THIS SUPPORT AGREEMENT (this “Agreement”), dated as of June 16, 2019, is made and entered into by and among Prosperity Bancshares, Inc., a Texas corporation (“Prosperity”), LegacyTexas Financial Group, Inc., a Maryland corporation (the “Company”), LegacyTexas Bank, a Texas banking association (“Legacy Bank”), and [●], an individual residing in the St

June 20, 2019 8-K

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, Financial Statements and Exhibits, Other Events

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): June 20, 2019 (June 14, 2019) Prosperity Bancshares, Inc. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorpo

June 20, 2019 EX-10.1

Executive Employment Agreement, dated as of June 16, 2019, by and among Prosperity Bank, LegacyTexas Bank and Kevin J. Hanigan (incorporated herein by reference to Exhibit 10.1 to the Company’s Current Report on Form 8‑K filed on June 20, 2019)

EX-10.1 Exhibit 10.1 EXECUTIVE EMPLOYMENT AGREEMENT This EMPLOYMENT AGREEMENT (the “Agreement”) is made the 16th day of June, 2019, by and among PROSPERITY BANK, a Texas banking association having a principal place of business at 1301 North Mechanic Street, El Campo, Texas 77437 (“Employer”), LEGACYTEXAS BANK, a Texas banking association having a principal place of business at 5851 Legacy Circle,

June 20, 2019 EX-10.2

Executive Employment Agreement, dated as of June 16, 2019, by and among Prosperity Bank, LegacyTexas Bank and J. Mays Davenport (incorporated herein by reference to Exhibit 10.2 the Company’s Current Report on Form 8‑K filed on June 20, 2019)

EX-10.2 Exhibit 10.2 EXECUTIVE EMPLOYMENT AGREEMENT This EMPLOYMENT AGREEMENT (the “Agreement”) is made the 16th day of June, 2019, by and among PROSPERITY BANK, a Texas banking association having a principal place of business at 1301 North Mechanic Street, El Campo, Texas 77437 (“Employer”), LEGACYTEXAS BANK, a Texas banking association having a principal place of business at 5851 Legacy Circle,

June 20, 2019 EX-10.3

Form of Director Support Agreement, dated as of June 16, 2019

EX-10.3 Exhibit 10.3 DIRECTOR SUPPORT AGREEMENT THIS SUPPORT AGREEMENT (this “Agreement”), dated as of June 16, 2019, is made and entered into by and among Prosperity Bancshares, Inc., a Texas corporation (“Prosperity”), LegacyTexas Financial Group, Inc., a Maryland corporation (the “Company”), LegacyTexas Bank, a Texas banking association (“Legacy Bank”), and [●], an individual residing in the St

June 20, 2019 425

PB / Prosperity Bancshares, Inc. 425 - Merger Prospectus - 8-K

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): June 20, 2019 (June 14, 2019) Prosperity Bancshares, Inc. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorpo

June 20, 2019 EX-3.1

Amended and Restated Bylaws of Prosperity Bancshares, Inc., dated June 14, 2019.

EX-3.1 Exhibit 3.1 AMENDED AND RESTATED BYLAWS OF PROSPERITY BANCSHARES, INC. A Texas Corporation Date of Adoption June 14, 2019 TABLE OF CONTENTS Page ARTICLE 1 OFFICES Section 1.1 Registered Office 1 Section 1.2 Other Offices 1 ARTICLE 2 SHAREHOLDERS Section 2.1 Place of Meetings 1 Section 2.2 Quorum; Adjournment of Meetings 1 Section 2.3 Annual Meetings 1 Section 2.4 Special Meetings 2 Section

June 20, 2019 EX-10.2

Executive Employment Agreement, dated as of June 16, 2019, by and among Prosperity Bank, LegacyTexas Bank and J. Mays Davenport.

EX-10.2 Exhibit 10.2 EXECUTIVE EMPLOYMENT AGREEMENT This EMPLOYMENT AGREEMENT (the “Agreement”) is made the 16th day of June, 2019, by and among PROSPERITY BANK, a Texas banking association having a principal place of business at 1301 North Mechanic Street, El Campo, Texas 77437 (“Employer”), LEGACYTEXAS BANK, a Texas banking association having a principal place of business at 5851 Legacy Circle,

June 20, 2019 EX-10.1

Executive Employment Agreement, dated as of June 16, 2019, by and among Prosperity Bank, LegacyTexas Bank and Kevin J. Hanigan.

EX-10.1 Exhibit 10.1 EXECUTIVE EMPLOYMENT AGREEMENT This EMPLOYMENT AGREEMENT (the “Agreement”) is made the 16th day of June, 2019, by and among PROSPERITY BANK, a Texas banking association having a principal place of business at 1301 North Mechanic Street, El Campo, Texas 77437 (“Employer”), LEGACYTEXAS BANK, a Texas banking association having a principal place of business at 5851 Legacy Circle,

June 18, 2019 8-K

Financial Statements and Exhibits, Other Events

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): June 18, 2019 Prosperity Bancshares, Inc. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commiss

June 18, 2019 EX-99.1

PROSPERITY BANCSHARES, INC. ANNOUNCES CHANGES TO SHARE REPURCHASE PLAN

EX-99.1 Exhibit 99.1 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.® David Zalman Prosperity Bank Plaza Chairman and Chief Executive Officer 4295 San Felipe 281.269.7199 Houston, Texas 77027 [email protected] PROSPERITY BANCSHARES, INC. ANNOUNCES CHANGES TO SHARE REPURCHASE PLAN FOR IMMEDIATE RELEASE HOUSTON, June 18, 2019. Prosperity Bancshares, Inc.® (NY

June 18, 2019 425

PB / Prosperity Bancshares, Inc. 425 - Merger Prospectus - 8-K

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): June 18, 2019 Prosperity Bancshares, Inc. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commiss

June 18, 2019 EX-99.1

PROSPERITY BANCSHARES, INC. ANNOUNCES CHANGES TO SHARE REPURCHASE PLAN

EX-99.1 Exhibit 99.1 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.® David Zalman Prosperity Bank Plaza Chairman and Chief Executive Officer 4295 San Felipe 281.269.7199 Houston, Texas 77027 [email protected] PROSPERITY BANCSHARES, INC. ANNOUNCES CHANGES TO SHARE REPURCHASE PLAN FOR IMMEDIATE RELEASE HOUSTON, June 18, 2019. Prosperity Bancshares, Inc.® (NY

June 17, 2019 425

PB / Prosperity Bancshares, Inc. 425 - Merger Prospectus - 425

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: LegacyTexas Financial Group, Inc. Commission File Number: 001-34737 The following e-mail (including the press release attached as exhibit 99.1 to the Form 8-K filed by Prosperity Bancshares, Inc. on June 1

June 17, 2019 425

PB / Prosperity Bancshares, Inc. 425 - Merger Prospectus - 425

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: LegacyTexas Financial Group, Inc. Commission File Number: 001-34737 As previously announced, the Prosperity Bancshares, Inc. (“Prosperity”) and LegacyTexas Financial Group, Inc. (“LegacyTexas”) management

June 17, 2019 EX-99.2

Important Information Cautionary Notes on Forward-Looking Statements This communication contains statements which, to the extent they are not statements of historical fact, constitute “forward-looking statements” within the meaning of the federal sec

EX-99.2 Exhibit 99.2 Preliminary working draft June 17, 2019 PARTNERING TO CREATE A PREMIER FRANCHISE 1 June │ 2019Exhibit 99.2 Preliminary working draft June 17, 2019 PARTNERING TO CREATE A PREMIER FRANCHISE 1 June │ 2019 Important Information Cautionary Notes on Forward-Looking Statements This communication contains statements which, to the extent they are not statements of historical fact, cons

June 17, 2019 EX-99.1

PROSPERITY BANCSHARES, INC. AND LEGACYTEXAS FINANCIAL GROUP, INC. ENTER INTO DEFINITIVE AGREEMENT TO MERGE

EX-99.1 Exhibit 99.1 PRESS RELEASE PROSPERITY BANCSHARES, INC. AND LEGACYTEXAS FINANCIAL GROUP, INC. ENTER INTO DEFINITIVE AGREEMENT TO MERGE FOR IMMEDIATE RELEASE HOUSTON & DALLAS, TEXAS, June 17, 2019. Prosperity Bancshares, Inc.® (NYSE: PB) (“Prosperity”), the parent company of Prosperity Bank®, and LegacyTexas Financial Group, Inc. (NASDAQ: LTXB) (“LegacyTexas”), the parent company of LegacyTe

June 17, 2019 8-K

Regulation FD Disclosure, Entry into a Material Definitive Agreement, 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): June 17, 2019 (June 16, 2019) Prosperity Bancshares, Inc. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorpo

June 17, 2019 EX-2.1

Agreement and Plan of Reorganization, dated as of June 16, 2019, by and between Prosperity Bancshares, Inc. and LegacyTexas Financial Group, Inc. (incorporated herein by reference to Exhibit 2.1 to the Company’s Current Report on Form 8-K filed on June 17, 2019)

EX-2.1 Exhibit 2.1 Execution Version AGREEMENT AND PLAN OF REORGANIZATION BY AND BETWEEN PROSPERITY BANCSHARES, INC. AND LEGACYTEXAS FINANCIAL GROUP, INC. Dated as of June 16, 2019 TABLE OF CONTENTS Page ARTICLE I ACQUISITION OF LEGACY BY PROSPERITY 2 Section 1.01 Merger of Legacy with and into Prosperity 2 Section 1.02 Effects of the Merger 2 Section 1.03 Articles of Incorporation and Bylaws 2 Se

June 17, 2019 EX-99.2

Important Information Cautionary Notes on Forward-Looking Statements This communication contains statements which, to the extent they are not statements of historical fact, constitute “forward-looking statements” within the meaning of the federal sec

EX-99.2 Exhibit 99.2 Preliminary working draft June 17, 2019 PARTNERING TO CREATE A PREMIER FRANCHISE 1 June │ 2019Exhibit 99.2 Preliminary working draft June 17, 2019 PARTNERING TO CREATE A PREMIER FRANCHISE 1 June │ 2019 Important Information Cautionary Notes on Forward-Looking Statements This communication contains statements which, to the extent they are not statements of historical fact, cons

June 17, 2019 EX-99.1

PROSPERITY BANCSHARES, INC. AND LEGACYTEXAS FINANCIAL GROUP, INC. ENTER INTO DEFINITIVE AGREEMENT TO MERGE

EX-99.1 Exhibit 99.1 PRESS RELEASE PROSPERITY BANCSHARES, INC. AND LEGACYTEXAS FINANCIAL GROUP, INC. ENTER INTO DEFINITIVE AGREEMENT TO MERGE FOR IMMEDIATE RELEASE HOUSTON & DALLAS, TEXAS, June 17, 2019. Prosperity Bancshares, Inc.® (NYSE: PB) (“Prosperity”), the parent company of Prosperity Bank®, and LegacyTexas Financial Group, Inc. (NASDAQ: LTXB) (“LegacyTexas”), the parent company of LegacyTe

June 17, 2019 425

PB / Prosperity Bancshares, Inc. 425 - Merger Prospectus - 8-K

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): June 17, 2019 (June 16, 2019) Prosperity Bancshares, Inc. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorpo

June 17, 2019 EX-2.1

Agreement and Plan of Reorganization, dated as of June 16, 2019, by and between Prosperity Bancshares, Inc. and LegacyTexas Financial Group, Inc.*

EX-2.1 Exhibit 2.1 Execution Version AGREEMENT AND PLAN OF REORGANIZATION BY AND BETWEEN PROSPERITY BANCSHARES, INC. AND LEGACYTEXAS FINANCIAL GROUP, INC. Dated as of June 16, 2019 TABLE OF CONTENTS Page ARTICLE I ACQUISITION OF LEGACY BY PROSPERITY 2 Section 1.01 Merger of Legacy with and into Prosperity 2 Section 1.02 Effects of the Merger 2 Section 1.03 Articles of Incorporation and Bylaws 2 Se

May 7, 2019 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2019 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: 001-35388 PROSPERIT

April 24, 2019 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): April 24, 2019 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commission

April 24, 2019 EX-99.1

PROSPERITY BANCSHARES, INC.® REPORTS FIRST QUARTER 2019 EARNINGS

Exhibit 99.1 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.® Cullen Zalman Prosperity Bank Plaza Vice President – Banking and Corporate Activities 4295 San Felipe 281.269.7199 Houston, Texas 77027 [email protected] FOR IMMEDIATE RELEASE PROSPERITY BANCSHARES, INC.® REPORTS FIRST QUARTER 2019 EARNINGS • First quarter earnings per common share (diluted) inc

April 18, 2019 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): April 16, 2019 Prosperity bancshares, inc. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commission

March 29, 2019 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

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 28, 2019 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commission

March 14, 2019 DEF 14A

Schedule 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. ) 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)) ☒ Defin

February 27, 2019 EX-21.1

Subsidiaries of Prosperity Bancshares, Inc. (incorporated herein by reference to Exhibit 21.1 to the Registrant’s Annual Report on Form 10-K for the year ended December 31, 2018)

Exhibit 21.1 PROSPERITY BANCSHARES, INC. LIST OF SUBSIDIARIES Direct Subsidiaries Jurisdiction of Organization Parent Entity Prosperity Bank Texas Prosperity Bancshares, Inc. Prosperity Interim Corporation Texas Prosperity Bancshares, Inc. Indirect Subsidiaries Jurisdiction of Organization Parent Entity Coppermark Card Services, Inc. Oklahoma Prosperity Bank Citizens Insurance Agency of Texas, Inc

February 27, 2019 10-K

PB / Prosperity Bancshares, Inc. 10-K (Annual Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For The Fiscal Year Ended December 31, 2018 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 001-35388 PROSPERITY BANC

February 13, 2019 EX-99.1

PROSPERITY BANCSHARES, INC.® ANNOUNCES RETIREMENT OF CFO

Exhibit 99.1 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.® David Zalman Prosperity Bank Plaza Chairman and Chief Executive Officer 4295 San Felipe 281.269.7199 Houston, Texas 77027 [email protected] FOR IMMEDIATE RELEASE PROSPERITY BANCSHARES, INC.® ANNOUNCES RETIREMENT OF CFO HOUSTON, February 12, 2019. Prosperity Bancshares, Inc.® (NYSE: PB) today anno

February 13, 2019 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): February 12, 2019 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commiss

February 12, 2019 SC 13G/A

PB / Prosperity Bancshares, Inc. / VANGUARD GROUP INC Passive Investment

prosperitybancsharesinc.htm - Generated by SEC Publisher for SEC Filing SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 7 )* Name of issuer: Prosperity Bancshares Inc Title of Class of Securities: Common Stock CUSIP Number: 743606105 Date of Event Which Requires Filing of this Statement: December 31, 2018 Check the ap

February 1, 2019 SC 13G

PB / Prosperity Bancshares, Inc. / VICTORY CAPITAL MANAGEMENT INC Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 ( Amendment No. )* Prosperity Bancshares Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 743606105 (CUSIP Number) December 31, 2018 (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which t

January 30, 2019 EX-99.1

PROSPERITY BANCSHARES, INC.® REPORTS FOURTH QUARTER 2018 EARNINGS

Exhibit 99.1 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.® Cullen Zalman Prosperity Bank Plaza 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 2018 EARNINGS • Fourth quarter earnings per common share (diluted) i

January 30, 2019 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 30, 2019 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commissi

November 7, 2018 10-Q

PB / Prosperity Bancshares, Inc. 10-Q (Quarterly Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 2018 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: 001-35388 PROSP

October 24, 2018 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 24, 2018 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commissi

October 24, 2018 EX-99.1

PROSPERITY BANCSHARES, INC.® REPORTS THIRD QUARTER 2018 EARNINGS

Exhibit 99.1 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.® David Zalman Prosperity Bank Plaza Chairman and Chief Executive Officer 4295 San Felipe 281.269.7199 Houston, Texas 77027 [email protected] FOR IMMEDIATE RELEASE PROSPERITY BANCSHARES, INC.® REPORTS THIRD QUARTER 2018 EARNINGS • Third quarter earnings per common share (diluted) increased 20.4% to

August 7, 2018 10-Q

PB / Prosperity Bancshares, Inc. 10-Q (Quarterly Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED JUNE 30, 2018 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: 001-35388 PROSPERITY

July 25, 2018 EX-99.1

PROSPERITY BANCSHARES, INC.® REPORTS SECOND QUARTER 2018 EARNINGS

Exhibit 99.1 PRESS RELEASE For more information contact: Prosperity Bancshares, Inc.® David Zalman Prosperity Bank Plaza Chairman and Chief Executive Officer 4295 San Felipe 281.269.7199 Houston, Texas 77027 [email protected] FOR IMMEDIATE RELEASE PROSPERITY BANCSHARES, INC.® REPORTS SECOND QUARTER 2018 EARNINGS • Second quarter earnings per common share (diluted) increased 18.2%

July 25, 2018 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 25, 2018 PROSPERITY BANCSHARES, INC. (Exact name of registrant as specified in its charter) Texas 001-35388 74-2331986 (State or other jurisdiction of incorporation) (Commission

June 27, 2018 11-K

PB / Prosperity Bancshares, Inc. FORM 11-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K FOR ANNUAL REPORTS OF EMPLOYEE STOCK PURCHASE, SAVINGS AND SIMILAR PLANS PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (Mark One) [ X ] ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2017 OR [ ] TRANSITION REPO

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