Prosperity Bancshares (PB) Senior Chairman & CEO reports new stock purchase

Rhea-AI Filing Summary

Prosperity Bancshares, Inc. reported an insider stock acquisition by its Senior Chairman & CEO, who is also a director. On 12/31/2025, the reporting person acquired 3,142 shares of common stock at $69.11 per share. Following this transaction, the filing shows 498,935 shares of common stock beneficially owned directly.

The report also lists indirect holdings, including 351,451 shares held by a children's trust, 10,202 shares held by a daughter, 10,876 shares held as custodian for a child, 8,670 shares held as custodian for another child, and 17,890 shares held through a 401(k) plan. Explanatory notes state that these totals include additional shares acquired since the last filing through Prosperity Bancshares' dividend reinvestment plan and 401(k) plan.

Insider Trade Summary

6 transactions reported

Mixed 6 txns

Insider ZALMAN DAVID

Role Senior Chairman & CEO

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	3,142	$69.11	$217K
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 498,935 shares (Direct); Common Stock — 351,451 shares (Indirect, By children's trust)

Footnotes (1)

1. Includes 328 shares acquired through the Prosperity Bancshares, Inc. dividend reinvestment plan since the last filing by the reporting person. Includes 346 shares acquired through the Prosperity Bancshares, Inc. dividend reinvestment plan since the last filing by the reporting person. Includes 554 shares acquired through the Prosperity Bancshares, Inc. 401(k) plan since the last filing by the reporting person.

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

ZALMAN DAVID

(Last) (First) (Middle)

4295 SAN FELIPE

(Street)

HOUSTON TX 77027-2915

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
PROSPERITY BANCSHARES INC [ PB ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Senior Chairman & CEO

3. Date of Earliest Transaction (Month/Day/Year)
12/31/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	12/31/2025		A		3,142	A	$69.11	498,935	D
Common Stock								351,451	I	By children's trust
Common Stock								10,202(1)	I	By daughter
Common Stock								10,876(2)	I	As custodian for child
Common Stock								8,670	I	As custodian for child
Common Stock								17,890(3)	I	Through 401(k) plan

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Includes 328 shares acquired through the Prosperity Bancshares, Inc. dividend reinvestment plan since the last filing by the reporting person.

2. Includes 346 shares acquired through the Prosperity Bancshares, Inc. dividend reinvestment plan since the last filing by the reporting person.

3. Includes 554 shares acquired through the Prosperity Bancshares, Inc. 401(k) plan since the last filing by the reporting person.

	/s/ Charlotte M. Rasche, Attorney in Fact	01/02/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did Prosperity Bancshares (PB) report in this Form 4?

The filing shows that the Senior Chairman & CEO and director of Prosperity Bancshares, Inc. acquired 3,142 shares of common stock on 12/31/2025 at a price of $69.11 per share.

How many Prosperity Bancshares (PB) shares does the reporting person own directly after the transaction?

After the reported acquisition, the filing lists 498,935 shares of Prosperity Bancshares, Inc. common stock as beneficially owned directly by the reporting person.

What indirect Prosperity Bancshares (PB) holdings are reported for the insider?

Indirect holdings include 351,451 shares by a children's trust, 10,202 shares by a daughter, 10,876 shares as custodian for a child, 8,670 shares as custodian for another child, and 17,890 shares through a 401(k) plan.

What does the filing say about dividend reinvestment plan shares for Prosperity Bancshares (PB)?

The explanation notes that 328 shares and 346 shares are included in certain indirect totals, reflecting shares acquired through the Prosperity Bancshares, Inc. dividend reinvestment plan since the last filing by the reporting person.

How many Prosperity Bancshares (PB) shares were added through the 401(k) plan since the last filing?

The filing states that the 17,890 shares held through the 401(k) plan include 554 shares acquired through the Prosperity Bancshares, Inc. 401(k) plan since the last filing by the reporting person.

What is the relationship of the reporting person to Prosperity Bancshares (PB)?

The reporting person is identified as both a Director and an Officer, with the title Senior Chairman & CEO of Prosperity Bancshares, Inc.