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PROSPERITY BANCSHARES INC

For the period ended Oct 28, 2026. Filed Oct 28, 2026.

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A notice of a major event between regular reports, such as results, a deal or a change of executives. It is often the first formal record of the news.

Oct 28, 2026 · Filed Oct 28, 2026

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PB$71.87-0.1%Stored close · as of Nov 6, 2026
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Contents

EX-99.1 · Stock Repurchase Program

Stock Repurchase Program

On January 26, 2026, Prosperity Bancshares announced a stock repurchase program under which up to 5%, or approximately 4.87 million shares, of its outstanding common stock may be acquired over a one-year period expiring on January 26, 2027, at the discretion of management. Under its 2026 stock repurchase program, Prosperity Bancshares repurchased approximately 457 thousand shares of its common stock at an average weighted price of $69.62 per share for a total of $31.8 million during the three months ended

September 30, 2026, and approximately 1.5 million shares of its common stock at an average weighted price of $68.63 per share for a total of $102.6 million during the nine months ended September 30, 2026.

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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.