Luedke William T. IV - 01 Jul 2026 Form 4 Insider Report for PROSPERITY BANCSHARES INC (PB)

Reporting relationship: Director
Issuer ticker: PB
Reported as of: 01 Jul 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 01 Jul 2026, 10:33:05 UTC
Prior SEC filing: 22 Apr 2026
Source filing: View source filing
Reporting owner signature: /s/ Charlotte M. Rasche, Attorney in Fact

Filing notes and source

Key filing fact

Luedke William T. IV filed Form 4 for PROSPERITY BANCSHARES INC (PB) on 01 Jul 2026.

Key facts

This page summarizes Luedke William T. IV's Form 4 filing for PROSPERITY BANCSHARES INC (PB).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 01 Jul 2026, 10:33.

Change

Previous filing in this sequence was filed on 22 Apr 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001606072 Primary reporting owner

LUEDKE WILLIAM T. IV

Relationship: Director
Address: 4295 SAN FELIPE, HOUSTON
Signature: /s/ Charlotte M. Rasche, Attorney in Fact
Signature date: 01 Jul 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

PB transaction

Common Stock

Award

Transaction value
Shares: +5,340
Change %: +22%
Price
Shares after: 29,949
Date: 01 Jul 2026
Ownership: Direct
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

Acquired in connection with the consummation of the transactions contemplated by the Agreement and Plan of Merger, dated as of January 27, 2026, by and between Prosperity Bancshares, Inc., a Texas corporation ("Prosperity") and Stellar Bancorp, Inc., a Texas corporation ("Stellar"). On July 1, 2026 (the "Effective Time"), upon and subject to the terms and conditions set forth in the merger agreement, (i) each share of Stellar's common stock, par value $0.01 per share, outstanding immediately prior to the Effective Time was cancelled and converted into the right to receive (a) 0.3803 shares of common stock, par value $1.00 per share, of Prosperity and (b) an amount in cash equal to $11.36 ((a) and (b) together, the "Per Share Merger Consideration"), and (ii) each outstanding Stellar restricted stock award subject solely to service-based vesting, repurchase or other lapse restriction vested and was converted into the right to receive (without interest) the Per Share Merger Consideration.

SEC remarks

Exhibit 24 Power of Attorney attached herewith.