# EDGAR Filing Document

**Accession Number:** 0001068851
**File Stem:** 0001193125-25-254578
**Filing Date:** 2025-10
**Character Count:** 102458
**Document Hash:** d4c6ea39162c51d8d70bc886e2d6534c
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-254578.hdr.sgml**: 20251029

**ACCESSION NUMBER**: 0001193125-25-254578

**CONFORMED SUBMISSION TYPE**: 425

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20251029

**DATE AS OF CHANGE**: 20251029

**GROUP MEMBERS**: AMERICAN BANK HOLDING CO

**GROUP MEMBERS**: SOUTHWEST BANCSHARES, INC

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** PROSPERITY BANCSHARES INC
- **CENTRAL INDEX KEY:** 0001068851
- **STANDARD INDUSTRIAL CLASSIFICATION:** STATE COMMERCIAL BANKS [6022]
- **ORGANIZATION NAME:** 02 Finance
- **EIN:** 742331986
- **STATE OF INCORPORATION:** TX
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 425
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-35388
- **FILM NUMBER:** 251426718

**BUSINESS ADDRESS:**
- **STREET 1:** 4295 SAN FELIPE
- **STREET 2:** N/A
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77027
- **BUSINESS PHONE:** 7136939300

**MAIL ADDRESS:**
- **STREET 1:** 4295 SAN FELIPE
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77027
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** PROSPERITY BANCSHARES INC
- **CENTRAL INDEX KEY:** 0001068851
- **STANDARD INDUSTRIAL CLASSIFICATION:** STATE COMMERCIAL BANKS [6022]
- **ORGANIZATION NAME:** 02 Finance
- **EIN:** 742331986
- **STATE OF INCORPORATION:** TX
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 425

**BUSINESS ADDRESS:**
- **STREET 1:** 4295 SAN FELIPE
- **STREET 2:** N/A
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77027
- **BUSINESS PHONE:** 7136939300

**MAIL ADDRESS:**
- **STREET 1:** 4295 SAN FELIPE
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77027

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

Subject Company: Southwest Bancshares, Inc.

Commission File Number: 001-35388

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**WASHINGTON, D.C. 20549**

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**FORM 8-K**

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**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, 2025**

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**PROSPERITY BANCSHARES, INC.**

**(Exact name of registrant as specified in its charter)**

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| | | |
|:---|:---|:---|
| **Texas** | **001-35388** | **74-2331986** |
| **(State or other jurisdiction**<br>**of incorporation)** | **(Commission**<br>**File Number)** | **(IRS Employer**<br>**Identification No.)** |

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**4295 San Felipe**

**Houston, Texas 77027**

**(Address of principal executive offices including zip code)**

**Registrant's telephone number, including area code: (281) 269-7199**

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Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☒ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

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| | | |
|:---|:---|:---|
| <u>Title of each class</u> | <u>Trading Symbol(s)</u> | <u>Name of each exchange on which registered</u> |
| Common stock, par value $1.00 per share | PB | New York Stock Exchange, Inc. |

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Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

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**Item 2.02 Results of Operations and Financial Condition.**

On October 29, 2025, Prosperity Bancshares, Inc. publicly disseminated a press release announcing its financial results for the third quarter ended September 30, 2025. A copy of the press release is furnished as Exhibit 99.1 hereto and incorporated herein by reference.

As provided in General Instruction B.2 to Form 8-K, the information furnished in Item 2.02 and Exhibit 99.1 of this Current Report on Form 8-K shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or otherwise subject to the liabilities of that section, and such information shall not be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

**Item 9.01 Financial Statements and Exhibits.**

(d)Exhibits. The following is furnished as an exhibit to this Current Report on Form 8-K:

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| | |
|:---|:---|
| Exhibit<br>Number | Description of Exhibit |
| 99.1 | [<u>Press Release issued by Prosperity Bancshares, Inc. dated October 29, 2025.</u>](pb-ex99_1.htm) |
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL document). |

---

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**SIGNATURES**

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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| | | |
|:---|:---|:---|
|  | PROSPERITY BANCSHARES, INC.<br>(Registrant) | PROSPERITY BANCSHARES, INC.<br>(Registrant) |
| Dated: October 29, 2025 | By: | /s/ Charlotte M. Rasche  |
|  |  | Charlotte M. Rasche |
|  |  | Executive Vice President and General Counsel |

---

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## Exhibit 99.1

Exhibit 99.1

![img98618419_0.jpg](img98618419_0.jpg)

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| | |
|:---|:---|
| ***PRESS RELEASE*** | **For more information contact:** |
| **Prosperity Bancshares, Inc.**<sup>®</sup> | Cullen Zalman |
| Prosperity Bank Plaza | Executive Vice President – Banking and Corporate Activities |
| 4295 San Felipe | 281.269.7199 |
| Houston, Texas 77027 | <u>cullen.zalman@prosperitybankusa.com</u> |

---

***FOR IMMEDIATE RELEASE***

**PROSPERITY BANCSHARES, INC.**<sup>®</sup>

**REPORTS THIRD QUARTER**

**2025 EARNINGS**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•**Board approved increase in dividend of 3.45% to $0.60 per share for fourth quarter 2025, representing the 22nd consecutive annual increase, with a compound annual growth rate of 10.7%**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•**Net income of $137.6 million and earnings per share (diluted) of $1.45 for third quarter 2025**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•**Net income of $402.9 million, increased 15.4%, and earnings per share (diluted) of $4.23, increased 14.9%, for the nine months ended September 30, 2025 compared with the same period 2024**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•**Third quarter net interest margin increased 29 basis points to 3.24% compared to 2.95% for third quarter 2024**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•**Deposits increased $308.7 million during third quarter 2025, or 4.5% annualized**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•**Noninterest-bearing deposits of $9.5 billion, representing 34.3% of total deposits**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•**Borrowings decreased $500.0 million during third quarter 2025**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•**Allowance for credit losses on loans and on off-balance sheet credit exposure of $377.3 million and allowance for credit losses on loans to total loans, excluding Warehouse Purchase Program, of 1.64%**<sup>(1)</sup>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•**Nonperforming assets remain low at 0.36% of third quarter average interest-earning assets**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•**Return (annualized) on third quarter average assets of 1.44% and average tangible common equity of 13.43%**<sup>(1)</sup>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•**Announced the signing of a definitive merger agreement with Southwest Bancshares, Inc. headquartered in San Antonio, Texas**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•**Pending acquisition of American Bank Holding Corporation, Corpus Christi, Texas**

HOUSTON, October 29, 2025. Prosperity Bancshares, Inc.<sup>®</sup> (NYSE: PB) ("Prosperity Bancshares"), the parent company of Prosperity Bank<sup>®</sup> (collectively, "Prosperity"), reported net income of $137.6 million for the quarter ended September 30, 2025, compared with $127.3 million for the same period in 2024. Net income per diluted common share was $1.45 for the quarter ended September 30, 2025, compared with $1.34 for the same period in 2024. The annualized return on third quarter average assets was 1.44%. Additionally, deposits increased $308.7 million during the third quarter of 2025. Nonperforming assets remain low at 0.36% of third quarter average interest-earning assets.

"In the third quarter we signed a definitive merger agreement with Southwest Bancshares, Inc., the parent company of Texas Partners Bank, headquartered in San Antonio, Texas. We are excited about this transaction as it significantly expands our San Antonio metro footprint with 4 additional branches and increased deposit market share, bolsters our presence in the Texas Hill Country and adds an experienced C&I lending team," said David Zalman, Prosperity's Senior Chairman and Chief Executive Officer.

______________

(1)Refer to the "Notes to Selected Financial Data" at the end of this Earnings Release for a reconciliation of this non-GAAP financial measure to the nearest GAAP financial measure.

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"I would also be remiss not to mention how excited we are about our pending merger with American Bank Holding Corporation in Corpus Christi, Texas. The combination will strengthen our presence and operations in South Texas and surrounding areas and enhance our presence in Central Texas, including San Antonio," continued Zalman.

"I am also pleased to announce that the Board of Directors approved increasing the fourth quarter 2025 dividend to $0.60 per share from $0.58 per share that was paid in the prior four quarters. The increase reflects the continued confidence the Board has in our company and our markets. The compound annual growth rate in dividends declared from 2003 to 2025 was 10.7%. We continue to share our success with our shareholders through the payment of dividends and opportunistic stock repurchases, while also continuing to grow our capital," stated Zalman.

"As of October 2025, Texas boasts one of the world's strongest and most diverse economies, ranking as the 8th largest globally with a GDP of approximately $2.77 trillion in 2024. The state produces about 9.3% of U.S. GDP and continues to outpace national growth in many metrics. Although the economy is showing some signs of moderation, influenced by factors such as tariffs and immigration policies, we believe Texas remains the best state for business with a pro-business attitude and no state income tax. This is evidenced by major corporations continuing to move their operations to Texas and Oklahoma," added Zalman.

"As of October 2025, Oklahoma's economy is demonstrating resilience and modest growth, outpacing national averages in key areas such as unemployment and population expansion despite broader U.S. slowdowns from tariffs and policy uncertainties," continued Zalman.

"I would like to thank our customers, associates, directors and shareholders for their hard work and loyalty. Our fundamentals and resolve have never been stronger to continue to build this successful company," concluded Zalman.

**Results of Operations for the Three Months Ended September 30, 2025**

Net income was $137.6 million<sup>(2)</sup> for the three months ended September 30, 2025, compared with $127.3 million<sup>(3)</sup>for the same period in 2024, an increase of $10.3 million or 8.1%. Net income per diluted common share was $1.45 for the three months ended September 30, 2025, compared with $1.34 for the same period in 2024, an increase of 8.2%. The changes were primarily due to an increase in net interest income, partially offset by an increase in provision for income taxes. On a linked quarter basis, net income was $137.6 million<sup>(2)</sup> for the three months ended September 30, 2025, compared with $135.2 million<sup>(4)</sup>for the three months ended June 30, 2025, an increase of $2.4 million or 1.8%. Net income per diluted common share was $1.45 for the three months ended September 30, 2025, compared with $1.42 for the three months ended June 30, 2025. Annualized returns on average assets, average common equity and average tangible common equity for the three months ended September 30, 2025, were 1.44%, 7.18% and 13.43%<sup>(1)</sup>, respectively. Prosperity's efficiency ratio (excluding net gains and losses on the sale, write-down or write-up of assets and securities) was 44.06%<sup>(1)</sup> for the three months ended September 30, 2025.

Net interest income before provision for credit losses was $273.4 million for the three months ended September 30, 2025, compared with $261.7 million for the same period in 2024, an increase of $11.7 million or 4.5%. The change was primarily due to a decrease in the average balances and average rates on other borrowings and a decrease in the average rates on interest-bearing deposits, partially offset by a decrease in the average balances and average rates on federal funds sold and other earning assets, a decrease in the average balances and average rates on loans and a decrease in loan discount accretion of $2.0 million. Net interest income before provision for credit losses increased $5.7 million or 2.1% to $273.4 million for the three months ended September 30, 2025, compared with $267.7 million for the three months ended June 30, 2025, primarily due to one extra day during the current quarter and a decrease in the average balances for other borrowings.

The net interest margin on a tax equivalent basis was 3.24% for the three months ended September 30, 2025, compared with 2.95% for the same period in 2024. The change was primarily due to a decrease in the average balances and average rates on other borrowings and a decrease in the average rates on interest-bearing deposits, partially offset by a decrease in the average balances and average rates

______________

(2)Includes purchase accounting adjustments of $2.6 million, net of tax, primarily comprised of loan discount accretion of $2.9 million for the three months ended September 30, 2025.

(3)Includes purchase accounting adjustments of $4.3 million, net of tax, primarily comprised of loan discount accretion of $4.8 million for the three months ended September 30, 2024.

(4)Includes purchase accounting adjustments of $2.8 million, net of tax, primarily comprised of loan discount accretion of $3.1 million for the three months ended June 30, 2025.

(5)Includes purchase accounting adjustments of $8.5 million, net of tax, primarily comprised of loan discount accretion of $9.3 million for the nine months ended September 30, 2025.

(6)Includes purchase accounting adjustments of $12.4 million, net of tax, primarily comprised of loan discount accretion of $13.9 million, merger related provision for credit losses of $9.1 million, merger related expenses of $4.4 million, FDIC special assessment of $3.6 million, and net gain on sale or write-up of securities of $11.2 million for the nine months ended September 30, 2024.

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on federal funds sold and other earning assets, a decrease in the average balances and average rates on loans and a decrease in loan discount accretion of $2.0 million. The net interest margin on a tax equivalent basis was 3.24% for the three months ended September 30, 2025, compared with 3.18% for the three months ended June 30, 2025, primarily due to a decrease in the average balances for other borrowings.

Noninterest income was $41.2 million for the three months ended September 30, 2025, compared with $41.1 million for the same period in 2024. Noninterest income was $41.2 million for the three months ended September 30, 2025, compared with $43.0 million for the three months ended June 30, 2025, a decrease of $1.7 million. The change was primarily due to a decrease in net gain on sale or write-down of assets.

Noninterest expense was $138.6 million for the three months ended September 30, 2025, compared with $140.3 million for the same period in 2024, a decrease of $1.7 million, primarily due to a decrease in other noninterest expense. Noninterest expense was $138.6 million for the three months ended September 30, 2025, and the three months ended June 30, 2025.

**Results of Operations for the Nine Months Ended September 30, 2025**

For the nine months ended September 30, 2025, net income was $402.9 million<sup>(5)</sup>compared with $349.3 million<sup>(6)</sup>for the same period in 2024, an increase of $53.6 million or 15.4%. Net income per diluted common share was $4.23 for the nine months ended September 30, 2025, compared with $3.68 for the same period in 2024, an increase of 14.9%. The changes were primarily due to an increase in net interest income, lower merger related provision and expenses, and lower regulatory assessments and FDIC insurance, partially offset by a decrease in net gain on sale or write-up of securities. Returns on average assets, average common equity and average tangible common equity for the nine months ended September 30, 2025, were 1.40%, 7.08% and 13.36%<sup>(1)</sup>, respectively.

Net interest income before provision for credit losses for the nine months ended September 30, 2025, was $806.5 million compared with $758.7 million for the same period in 2024, an increase of $47.8 million or 6.3%. The change was primarily due to a decrease in the average balances and average rates on other borrowings and a decrease in the average rates on interest-bearing deposits, partially offset by a decrease in the average balances on investment securities, a decrease in the average balances and average rates on federal funds sold and other earning assets, a decrease in loan discount accretion of $4.6 million and a decrease in the average balances on loans.

The net interest margin on a tax equivalent basis for the nine months ended September 30, 2025, was 3.19% compared with 2.86% for the same period in 2024. The change was primarily due to a decrease in the average balances and average rates on other borrowings and a decrease in the average rates on interest-bearing deposits, partially offset by a decrease in the average balances on investment securities, a decrease in the average balances and average rates on federal funds sold and other earning assets, a decrease in loan discount accretion of $4.6 million and a decrease in the average balances on loans.

Noninterest income was $125.5 million for the nine months ended September 30, 2025, compared with $126.0 million for the same period in 2024.

Noninterest expense was $417.5 million for the nine months ended September 30, 2025, compared with $429.0 million for the same period in 2024, a decrease of $11.5 million or 2.7%, primarily due to decreases in regulatory assessment and FDIC insurance, merger related expenses and other noninterest expense.

**Balance Sheet Information**

Prosperity had $38.330 billion in total assets at September 30, 2025, compared with $38.417 billion at June 30, 2025, and $40.115 billion at September 30, 2024. The decrease was primarily due to the reduction in borrowings by $1.50 billion from September 30, 2024 to September 30, 2025.

Loans were $22.028 billion at September 30, 2025, a decrease of $169.6 million from $22.197 billion at June 30, 2025. Loans decreased $353.1 million from $22.381 billion at September 30, 2024.

Loans, excluding Warehouse Purchase Program loans, were $20.750 billion at September 30, 2025, compared with $20.910 billion at June 30, 2025, a decrease of $160.4 million, and compared with $21.152 billion at September 30, 2024, a decrease of $402.6 million.

Deposits were $27.782 billion at September 30, 2025, an increase of $308.7 million or 1.1% from $27.473 billion at June 30, 2025. Deposits decreased $305.5 million from $28.088 billion at September 30, 2024.

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**Asset Quality**

Nonperforming assets totaled $119.6 million or 0.36% of quarterly average interest-earning assets at September 30, 2025, compared with $110.5 million or 0.33% of quarterly average interest-earning assets at June 30, 2025, and $89.9 million or 0.25% of quarterly average interest-earning assets at September 30, 2024, with a significant portion of the balance for each period attributable to acquired loans.

The allowance for credit losses on loans and off-balance sheet credit exposures was $377.3 million at September 30, 2025, compared with $383.7 million at June 30, 2025, and $392.0 million at September 30, 2024. There was no provision for credit losses for the three and nine months ended September 30, 2025, compared to no provision for credit losses for the three months ended September 30, 2024, and a $9.1 million provision for credit losses for the nine months ended September 30, 2024.

The allowance for credit losses on loans was $339.6 million or 1.54% of total loans at September 30, 2025, compared with $346.1 million or 1.56% of total loans at June 30, 2025, and $354.4 million or 1.58% of total loans at September 30, 2024. Excluding Warehouse Purchase Program loans, the allowance for credit losses on loans to total loans was 1.64%<sup>(1)</sup> at September 30, 2025, compared with 1.66%<sup>(1)</sup> at June 30, 2025, and 1.68%<sup>(1)</sup> at September 30, 2024.

Net charge-offs were $6.5 million for the three months ended September 30, 2025, compared with net charge-offs of $3.0 million for the three months ended June 30, 2025, and net charge-offs of $5.5 million for the three months ended September 30, 2024. For the three months ended September 30, 2025, $4.5 million of reserves on resolved purchased credit deteriorated ("PCD") loans without any related charge-offs were released to the general reserve.

Net charge-offs were $12.2 million for the nine months ended September 30, 2025, compared with net charge-offs of $12.0 million for the nine months ended September 30, 2024. For the nine months ended September 30, 2025, $15.0 million of reserves on resolved PCD loans without any related charge-offs were released to the general reserve.

**Dividend**

Prosperity Bancshares declared a fourth quarter 2025 cash dividend of $0.60 per share to be paid on January 2, 2026, to all shareholders of record as of December 15, 2025, an increase of $0.02 per share, or 3.45%, from the prior quarter.

**Stock Repurchase Program**

On January 21, 2025, Prosperity Bancshares announced a stock repurchase program under which up to 5%, or approximately 4.8 million shares, of its outstanding common stock may be acquired over a one-year period expiring on January 21, 2026, at the discretion of management. Under its 2025 stock repurchase program, Prosperity Bancshares repurchased 299,318 shares of its common stock at an average weighted price of $66.62 per share during the three and nine months ended September 30, 2025.

**Agreement to Acquire Southwest Bancshares, Inc.**

On October 1, 2025, Prosperity Bancshares and Southwest Bancshares, Inc. ("Southwest) jointly announced the signing of a definitive merger agreement (the "Prosperity/Southwest Merger Agreement") whereby Southwest, a Texas corporation and bank holding company of Texas Partners Bank ("Texas Partners"), will merge with and into Prosperity Bancshares and Texas Partners will merge with and into Prosperity Bank. Texas Partners operates 11 banking offices in Central Texas including its main office in San Antonio, and banking offices in the San Antonio area, Austin and the Hill Country. As of June 30, 2025, Southwest, on a consolidated basis, reported total assets of $2.354 billion, total loans of $1.890 billion and total deposits of $2.129 billion.

Under the terms and subject to the conditions of the Prosperity/Southwest Merger Agreement, Prosperity Bancshares will issue 4,062,520 shares of Prosperity Bancshares common stock for all outstanding shares of Southwest common stock and restricted stock awards, subject to certain potential adjustments. Southwest warrants and in-the-money Southwest stock options that are outstanding at the closing will be converted into cash payments based on the value of the merger consideration (less the applicable exercise price), as calculated pursuant to the terms of the Prosperity/Southwest Merger Agreement. Based on Prosperity Bancshares's closing price of $65.97 on September 29, 2025, the total consideration was valued at approximately $268.9 million. The transaction is subject to customary closing conditions, including the receipt of regulatory approvals and approval by the shareholders of Southwest. The transaction is expected to close during the first quarter of 2026.

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**Pending Acquisition of American Bank Holding Corporation**

On July 18, 2025, Prosperity Bancshares and American Bank Holding Corporation ("American") jointly announced the signing of a definitive merger agreement (the "Prosperity/American Merger Agreement") whereby American, a Texas corporation and bank holding company of American Bank, N.A. ("American Bank"), will merge with and into Prosperity Bancshares and American Bank will merge with and into Prosperity Bank. American Bank operates 18 banking offices and 2 loan production offices in South and Central Texas including its main office in Corpus Christi, and banking offices in San Antonio, Austin, Victoria and the greater Corpus Christi area including Port Aransas and Rockport and a loan production office in Houston, Texas. As of June 30, 2025, American, on a consolidated basis, reported total assets of $2.553 billion, total loans of $1.798 billion and total deposits of $2.293 billion.

Under the terms and subject to the conditions of the Prosperity/American Merger Agreement, Prosperity Bancshares will issue 4,439,981 shares of Prosperity Bancshares common stock for all outstanding shares of American common stock, subject to certain potential adjustments. Based on Prosperity Bancshares' closing price of $72.40 on July 16, 2025, the total consideration was valued at approximately $321.5 million. The transaction is subject to customary closing conditions, including the receipt of required regulatory approvals and approval of the shareholders of American. The transaction is expected to close during the fourth quarter of 2025 or the first quarter of 2026.

**Conference Call**

Prosperity's management team will host a conference call on Wednesday, October 29, 2025, at 11:30 a.m. Eastern Time (10:30 a.m. Central Time) to discuss Prosperity's third quarter 2025 earnings. Individuals and investment professionals may participate in the call by dialing 877-883-0383 for domestic participants, or 412-902-6506 for international participants. The participant elite entry number is 2818776.

Alternatively, individuals may listen to the live webcast of the presentation by visiting Prosperity's website at <u>www.prosperitybankusa.com</u>. The webcast may be accessed from Prosperity's Investor Relations page by selecting "Presentations, Webcasts & Calls" from the menu and following the instructions.

**Non-GAAP Financial Measures**

Prosperity's management uses certain non-GAAP financial measures to evaluate its performance. Specifically, for internal planning and forecasting purposes, Prosperity reviews each of diluted earnings per share, return on average assets, return on average common equity, and return on average tangible common equity, in each case excluding merger related provision for credit losses, net of tax, merger related expenses, net of tax, Federal Deposit Insurance Corporation ("FDIC") special assessment, net of tax, and net gain on the sale or write-up of securities, net of tax; return on average tangible common equity; tangible book value per share; the tangible equity to tangible assets ratio; allowance for credit losses to total loans excluding Warehouse Purchase Program loans; the efficiency ratio, excluding net gains and losses on the sale, write-down or write-up of assets and securities; and the efficiency ratio, excluding net gains and losses on the sale, write-down or write-up of assets and securities, merger related expenses, and FDIC special assessment. Prosperity believes these non-GAAP financial measures provide information useful to investors in understanding Prosperity's financial results and their presentation, together with the accompanying reconciliations, provides a more complete understanding of factors and trends affecting Prosperity's business and allows investors to view performance in a manner similar to management, the entire financial services sector, bank stock analysts and bank regulators. Further, Prosperity believes that these non-GAAP financial measures provide useful information by excluding certain items that may not be indicative of its core operating earnings and business outlook. These non-GAAP financial measures should not be considered a substitute for, nor of greater importance than, GAAP basis financial measures and results; Prosperity strongly encourages investors to review its consolidated financial statements in their entirety and not to rely on any single financial measure. Because non-GAAP financial measures are not standardized, it may not be possible to compare these financial measures with other companies' non-GAAP financial measures having the same or similar names. Please refer to the "Notes to Selected Financial Data" at the end of this Earnings Release for a reconciliation of these non-GAAP financial measures to the nearest respective GAAP financial measures.

**Prosperity Bancshares, Inc.®**

As of September 30, 2025, Prosperity Bancshares, Inc.<sup>®</sup> is a $38.330 billion Houston, Texas based regional financial holding company providing personal banking services and investments to consumers and businesses throughout Texas and Oklahoma. Founded in 1983, Prosperity believes in a community banking philosophy, taking care of customers, businesses and communities in the areas it serves by providing financial solutions to simplify everyday financial needs. In addition to offering traditional deposit and loan products, Prosperity offers digital banking solutions, credit and debit cards, mortgage services, retail brokerage services, trust and wealth management, and treasury management.

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Prosperity currently operates 283 full-service banking locations: 62 in the Houston area, including The Woodlands; 33 in the South Texas area including Corpus Christi and Victoria; 61 in the Dallas/Fort Worth area; 22 in the East Texas area; 31 in the Central Texas area including Austin and San Antonio; 45 in the West Texas area including Lubbock, Midland-Odessa, Abilene, Amarillo and Wichita Falls; 15 in the Bryan/College Station area; 6 in the Central Oklahoma area; and 8 in the Tulsa, Oklahoma area.

**Cautionary Notes on Forward-Looking Statements**

"Safe Harbor" Statement under the Private Securities Litigation Reform Act of 1995: This release contains, and the remarks by Prosperity's management on the conference call may contain, statements regarding the proposed transactions between (1) Prosperity Bancshares, Inc. ("Prosperity") and Southwest Bancshares, Inc. ("Southwest") and (2) Prosperity and American Bank Holding Corporation ("American"); future financial and operating results; benefits and synergies of the transactions; future opportunities for Prosperity; the issuances of common stock of Prosperity contemplated by the Agreement and Plan of Merger by and between Prosperity and Southwest (the "Prosperity/Southwest Merger Agreement") and the Agreement and Plan of Merger by and between Prosperity and American (the "Prosperity/American Merger Agreement" and, together with the Prosperity/Southwest Merger Agreement, the "Merger Agreements"); in connection with the proposed transaction between Prosperity and Southwest, the expected filing by Prosperity with the Securities and Exchange Commission (the "SEC") of a registration statement on Form S-4 (the "Prosperity/Southwest Registration Statement") and a prospectus of Prosperity and a proxy statement of Southwest to be included therein (the "Prosperity/Southwest Proxy Statement/Prospectus"); in connection with the proposed transaction between Prosperity and American, a registration statement on Form S-4 (the "Prosperity/American Registration Statement" and, together with the Prosperity/Southwest Registration Statement, the "Registration Statements") and a preliminary prospectus of Prosperity and a proxy statement of American included therein (the "Prosperity/American Proxy Statement/ Prospectus" and, together with the Southwest Proxy Statement/ Prospectus, the "Proxy Statement/ Prospectuses"), which registration statement was filed with the SEC on September 17, 2025, and amended on September 30, 2025; the expected timing of the closing of the proposed transactions; the ability of the parties to complete the proposed transactions considering the various closing conditions and any other statements about future expectations that constitute forward-looking statements within the meaning of the federal securities laws, including the meaning of the Private Securities Litigation Reform Act of 1995, as amended, Section 27A of the Securities Act of 1933, as amended (the "Securities Act"), and Section 21E of the Securities Exchange Act of 1934, as amended. From time to time, oral or written forward-looking statements may also be included in other information released to the public. Such forward-looking statements are typically, but not exclusively, identified by the use in the statements of words or phrases such as "aim," "anticipate," "believe," "estimate," "expect," "goal," "guidance," "intend," "is anticipated," "is expected," "is intended," "objective," "plan," "projected," "projection," "will affect," "will be," "will continue," "will decrease," "will grow," "will impact," "will increase," "will incur," "will reduce," "will remain," "will result," "would be," variations of such words or phrases (including where the word "could," "may," or "would" is used rather than the word "will" in a phrase) and similar words and phrases indicating that the statement addresses some future result, occurrence, plan or objective. Forward-looking statements include all statements other than statements of historical fact, including forecasts or trends, and are based on current expectations, assumptions, estimates, and projections about Prosperity and its subsidiaries or related to the proposed transactions between (1) Prosperity and Southwest and (2) Prosperity and American and are subject to significant risks and uncertainties that could cause actual results to differ materially from the results expressed in such statements.

These forward-looking statements may include information about Prosperity's possible or assumed future economic performance or future results of operations, including future revenues, income, expenses, provision for credit losses, provision for taxes, effective tax rate, earnings per share and cash flows and Prosperity's future capital expenditures and dividends, future financial condition and changes therein, including changes in Prosperity's loan portfolio and allowance for credit losses, future capital structure or changes therein, as well as the plans and objectives of management for Prosperity's future operations, future or proposed acquisitions, the future or expected effect of acquisitions on Prosperity's operations, results of operations, financial condition, and future economic performance, statements about the anticipated benefits of each of the proposed transactions, and statements about the assumptions underlying any such statement.

These forward-looking statements are not guarantees of future performance and are based on expectations and assumptions Prosperity currently believes to be valid. Because forward-looking statements relate to future results and occurrences, many of which are outside of Prosperity's control, they are subject to inherent uncertainties, risks and changes in circumstances that are difficult to predict. These risks and uncertainties include, but are not limited to, whether Prosperity can: successfully identify acquisition targets and integrate the businesses of acquired companies and banks; continue to sustain its current internal growth rate or total growth rate; provide products and services that appeal to its customers; continue to have access to debt and equity capital markets; and achieve its sales objectives. Other risks include, but are not limited to: the possibility that credit quality could deteriorate; actions of competitors; changes in laws and regulations (including changes in governmental interpretations of regulations and changes in accounting standards); a deterioration or downgrade in the credit quality and credit agency ratings of the securities in Prosperity's securities portfolio; customer and consumer demand, including customer and consumer response to marketing; effectiveness of spending, investments or programs; fluctuations in the cost and availability of supply chain resources; economic conditions, including currency rate, interest rate and commodity price fluctuations; changes in trade policies by the United States or other countries, such as tariffs or retaliatory tariffs; and

------

the effect, impact, potential duration or other implications of weather and climate-related events. Many possible events or factors could adversely affect the future financial results and performance of Prosperity, Southwest or American or the combined company and could cause those results or performance to differ materially from those expressed in or implied by the forward-looking statements. Such risks and uncertainties include, among others: (1) the risk that the cost savings and synergies from the transactions may not be fully realized or may take longer than anticipated to be realized, (2) disruption to Prosperity's, Southwest's and American's businesses as a result of the announcements and pendency of the transactions, (3) the risk that the integration of Southwest's and/or American's businesses and operations into Prosperity, will be materially delayed or will be more costly or difficult than expected, or that Prosperity is otherwise unable to successfully integrate Southwest's and/or American's business into its own, including as a result of unexpected factors or events, (4) the failure to obtain the necessary approval by the shareholders of Southwest and/or American, (5) the ability by each of Prosperity, Southwest and/or American to obtain required governmental approvals of the transactions on the timeline expected, or at all, and the risk that such approvals may result in the imposition of conditions that could adversely affect Prosperity after the closing of the transactions or adversely affect the expected benefits of the transactions, (6) reputational risk and the reaction of each company's customers, suppliers, employees or other business partners to the transactions, (7) the failure of the closing conditions in the applicable Merger Agreements to be satisfied, or any unexpected delay in closing the transactions or the occurrence of any event, change or other circumstances that could give rise to the termination of the applicable Merger Agreements, (8) the dilution caused by the issuances of additional shares of Prosperity's common stock in the transactions, (9) the possibility that the transactions may be more expensive to complete than anticipated, including as a result of unexpected factors or events, (10) the outcome of any legal or regulatory proceedings that may be currently pending or later instituted against Prosperity before or after any of the transactions, or against Southwest or American, (11) diversion of management's attention from ongoing business operations and (12) general competitive, economic, political and market conditions and other factors that may affect future results of Prosperity, Southwest and American. Prosperity disclaims any obligation to update such factors or to publicly announce the results of any revisions to any of the forward-looking statements included herein to reflect future events or developments. These and various other factors are discussed in Prosperity's Annual Report on Form 10-K, Quarterly Reports on Form 10- Q, and Current Reports on Form 8-K, in each case filed with the SEC, and other reports and statements Prosperity has filed with the SEC. Copies of the SEC filings for Prosperity may be downloaded from the Internet at no charge from http://www.prosperitybankusa.com.

**Additional Information about the Transactions and Where to Find It**

Prosperity intends to file with the SEC the Prosperity/Southwest Registration Statement on Form S-4 to register the shares of Prosperity common stock to be issued to the shareholders of Southwest in connection with Prosperity's and Southwest's proposed transaction. The Prosperity/Southwest Registration Statement will include the Prosperity/Southwest Proxy Statement/Prospectus which will be sent to the shareholders of Southwest in connection with the proposed transaction. This communication is not a substitute for the Prosperity/Southwest Proxy Statement/Prospectus or any other document which Prosperity may file with the SEC. In connection with Prosperity's and American's proposed transaction, Prosperity has filed with the SEC on September 17, 2025 the Prosperity/American Registration Statement on Form S-4, as amended on September 30, 2025, (the "Amended Prosperity/American Registration Statement") (which Amended Prosperity/American Registration Statement was declared effective by the SEC on September 30, 2025), to register the shares of Prosperity common stock to be issued to the shareholders of American in connection with Prosperity's and American's proposed transaction. The Prosperity/American Proxy Statement/Prospectus will be delivered to shareholders of American. Prosperity may also file other documents with the SEC regarding the proposed transaction. This communication is not a substitute for the Prosperity/American Proxy Statement/Prospectus or Amended Prosperity/American Registration Statement or any other document which Prosperity may file with the SEC. INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE APPLICABLE REGISTRATION STATEMENT ON FORM S-4, THE APPLICABLE PROXY STATEMENT/PROSPECTUS INCLUDED WITHIN THE APPLICABLE REGISTRATION STATEMENT ON FORM S-4 AND ANY OTHER RELEVANT DOCUMENTS TO BE FILED WITH THE SEC IN CONNECTION WITH THE PROPOSED TRANSACTIONS OR INCORPORATED BY REFERENCE INTO THE APPLICABLE PROXY/STATEMENT PROSPECTUS, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THESE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY, BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT PROSPERITY, SOUTHWEST, AMERICAN AND THE APPLICABLE PROPOSED TRANSACTIONS. Investors and security holders may obtain free copies of these documents through the website maintained by the SEC at http://www.sec.gov. You will also be able to obtain these documents, free of charge, from Prosperity at http://www.prosperitybankusa.com. Copies of the Prosperity/American Proxy Statement/Prospectus (and the Prosperity/Southwest Proxy Statement/Prospectus, when it becomes available), can also be obtained, free of charge, by directing a request by telephone or mail to Prosperity Bancshares, Inc., Prosperity Bank Plaza, 4295 San Felipe, Houston, Texas 77027 Attn: Investor Relations, (281) 269-7199, or with respect to the Prosperity/American Proxy Statement/Prospectus, to American Bank Holding Corporation, 800 North Shoreline Boulevard, Corpus Christi, Texas 78401, Attn: Stephen Raffaele, (512) 306-5550 or, with respect to the Prosperity/Southwest Proxy Statement/Prospectus, Southwest Bancshares, Inc., 1900 NW Loop 410, San Antonio, Texas 78213, Attention: Investor Relations, (210) 807-5511, as applicable.

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**No Offer or Solicitation**

This communication is for informational purposes only and is not intended to and does not constitute an offer to subscribe for, buy or sell, or the solicitation of an offer to subscribe for, buy or sell, or an invitation to subscribe for, buy or sell any securities or a solicitation of any vote or approval in any jurisdiction, nor shall there be any sale, issuance or transfer of securities in any jurisdiction in which such offer, invitation, sale or solicitation would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act, and otherwise in accordance with applicable law.

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| | | | | |
|:---|:---|:---|:---|:---|
| **Bryan/College Station Area** | Grapevine | Seven Points | Shadow Creek | North University |
| Bryan | Grapevine Main | Teague | Spring | Texas Tech Student Union |
| Bryan-29<sup>th</sup> Street | Kiest | Tyler-Beckham | Tomball |  |
| Bryan-East | Lake Highlands | Tyler-South Broadway | Waller | **Midland** |
| Bryan-North | McKinney | Tyler-University | West Columbia | North |
| Caldwell | McKinney Eldorado | Winnsboro | Wharton | Wadley |
| College Station | McKinney Redbud |  | Winnie | Wall Street |
| Hearne | North Carrolton | **Houston Area** | Wirt | West |
| Huntsville | Park Cities | **Houston** |  |  |
| Madisonville | Plano | Aldine | **South Texas Area -** | **Odessa** |
| Navasota | Plano-West | Alief | **Corpus Christi** | Grant |
| New Waverly | Preston Forest | Bellaire | Calallen | Kermit Highway |
| Rock Prairie | Preston Parker | Beltway | Carmel | Parkway |
| Southwest Parkway | Preston Royal | Clear Lake | Northwest |  |
| Tower Point | Red Oak | Copperfield | Saratoga | **San Angelo** |
| Wellborn Road | Richardson | Cypress | Timbergate | College Hills |
|  | Richardson-West | Downtown | Water Street | Sherwood Way |
| **Central Texas Area** | Rosewood Court | Eastex |  |  |
| **Austin** | The Colony | Fairfield | **Victoria** | **Wichita Falls** |
| Cedar Park | Tollroad | First Colony | Victoria Main | Cattlemans |
| Congress | Trinity Mills | Fry Road | Victoria-Navarro | Kell |
| Lakeway | Turtle Creek | Gessner | Victoria-North |  |
| Liberty Hill | West 15th Plano | Gladebrook | Victoria Salem | **Other West Texas Area** |
| Northland | West Allen | Grand Parkway |  | **Locations** |
| Oak Hill | Westmoreland | Heights | **Other South Texas Area** | Big Spring |
| Research Blvd | Wylie | Highway 6 West | **Locations** | Big Spring - East |
| Westlake |  | Little York | Alice | Brownfield |
|  | **Fort Worth** | Medical Center | Aransas Pass | Brownwood |
| **Other Central Texas Area** | Haltom City | Memorial Drive | Bay City | Burkburnett |
| **Locations** | Hulen | Northside | Beeville | Byers |
| Bastrop | Keller | Pasadena | Colony Creek | Cisco |
| Canyon Lake | Museum Place | Pecan Grove | Cuero | Comanche |
| Dime Box | Renaissance Square | Pin Oak | East Bernard | Early |
| Dripping Springs | Roanoke | River Oaks | Edna | Floydada |
| Elgin | Stockyards | Sugar Land | El Campo | Gorman |
| Flatonia |  | SW Medical Center | Goliad | Henrietta |
| Fredericksburg | **Other Dallas/Fort Worth Area** | Tanglewood | Gonzales | Levelland |
| Georgetown | **Locations** | The Plaza | Hallettsville | Littlefield |
| Gruene | Arlington | Uptown | Kingsville | Merkel |
| Horseshoe Bay | Azle | Waugh Drive | Mathis | Plainview |
| Kingsland | Ennis | Westheimer | Padre Island | Slaton |
| La Grange | Gainesville | West University | Palacios | Snyder |
| Lexington | Glen Rose | Woodcreek | Port Lavaca |  |
| Marble Falls | Granbury |  | Portland | **Oklahoma** |
| New Braunfels | Grand Prairie | **Katy** | Rockport | **Central Oklahoma Area** |
| Pleasanton | Jacksboro | Cinco Ranch | Sinton | **Oklahoma City** |
| Round Rock | Mesquite | Katy-Spring Green | Taft | 23<sup>rd</sup> Street |
| San Antonio | Muenster |  | Yoakum | Expressway |
| Schulenburg | Runaway Bay | **The Woodlands** | Yorktown | I-240 |
| Seguin | Sanger | The Woodlands-College Park |  | Memorial |
| Smithville | Waxahachie | The Woodlands-I-45 | **West Texas Area** |  |
| Thorndale | Weatherford | The Woodlands-Research Forest | **Abilene** | **Other Central Oklahoma Area** |
| Weimar |  |  | Antilley Road | **Locations** |
|  | **East Texas Area** | **Other Houston Area** | Barrow Street | Edmond |
| **Dallas/Fort Worth Area** | Athens | **Locations** | Cypress Street | Norman |
| **Dallas** | Blooming Grove | Angleton | Judge Ely |  |
| 14th Street Plano | Canton | Beaumont | Mockingbird | **Tulsa Area** |
| Abrams Centre | Carthage | Cleveland |  | **Tulsa** |
| Addison | Corsicana | Dayton | **Amarillo** | Garnett |
| Allen | Crockett | Galveston | Hillside | Harvard |
| Balch Springs | Eustace | Groves | Soncy | Memorial |
| Camp Wisdom | Gilmer | Hempstead |  | Sheridan |
| Carrollton | Grapeland | Hitchcock | **Lubbock** | S. Harvard |
| Cedar Hill | Gun Barrel City | Liberty | 4th Street | Utica Tower |
| Coppell | Jacksonville | Magnolia | 66th Street | Yale |
| East Plano | Kerens | Magnolia Parkway | 82nd Street |  |
| Frisco | Longview | Mont Belvieu | 86th Street | **Other Tulsa Area Locations** |
| Frisco Warren | Mount Vernon | Nederland | 110th Street | Owasso |
| Frisco-West | Palestine | Needville | Avenue Q |  |
| Garland | Rusk | Rosenberg | Milwaukee |  |

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- - -

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**Prosperity Bancshares, Inc.**<sup>®</sup>

**Financial Highlights (Unaudited)**

**(In thousands)**

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Sep 30, 2025** | **Jun 30, 2025** | **Mar 31, 2025** | **Dec 31, 2024** | **Sep 30, 2024** |
| **Balance Sheet Data (at period end)** |  |  |  |  |  |
| Loans held for sale | $11297 | $6004 | $9764 | $10690 | $6113 |
| Loans held for investment | 20738294 | 20903944 | 20909913 | 21057616 | 21146033 |
| Loans held for investment - Warehouse Purchase Program | 1278178 | 1287440 | 1057893 | 1080903 | 1228706 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total loans | 22027769 | 22197388 | 21977570 | 22149209 | 22380852 |
| Investment securities<sup>(A)</sup> | 10232462 | 10608104 | 10792731 | 11094424 | 11300756 |
| Federal funds sold | 210 | 197 | 221 | 292 | 208 |
| Allowance for credit losses on loans | (339626) | (346084) | (349101) | (351805) | (354397) |
| Cash and due from banks | 1766115 | 1304993 | 1694637 | 1972175 | 2209863 |
| Goodwill | 3503127 | 3503127 | 3503127 | 3503129 | 3504388 |
| Core deposit intangibles, net | 55194 | 58796 | 62406 | 66047 | 70178 |
| Other real estate owned | 13750 | 7874 | 8012 | 5701 | 5757 |
| Fixed assets, net | 378776 | 374602 | 373273 | 371238 | 373812 |
| Other assets | 692692 | 708355 | 701799 | 756328 | 623903 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total assets | $38330469 | $38417352 | $38764675 | $39566738 | $40115320 |
| Noninterest-bearing deposits | $9522028 | $9426657 | $9675915 | $9798438 | $9811361 |
| Interest-bearing deposits | 18260066 | 18046754 | 18350884 | 18582900 | 18276250 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total deposits | 27782094 | 27473411 | 28026799 | 28381338 | 28087611 |
| Other borrowings | 2400000 | 2900000 | 2700000 | 3200000 | 3900000 |
| Securities sold under repurchase agreements | 185797 | 183572 | 216086 | 221913 | 228896 |
| Allowance for credit losses on off-balance sheet credit exposures | 37646 | 37646 | 37646 | 37646 | 37646 |
| Other liabilities | 259994 | 222987 | 267083 | 287346 | 499918 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total liabilities | 30665531 | 30817616 | 31247614 | 32128243 | 32754071 |
| Shareholders' equity<sup>(B)</sup> | 7664938 | 7599736 | 7517061 | 7438495 | 7361249 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total liabilities and equity | $38330469 | $38417352 | $38764675 | $39566738 | $40115320 |

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**(A) Includes $(1,987), $(1,657), $(1,374), $(2,056) and $(1,070) in unrealized losses on available for sale securities for the quarterly periods ended September 30, 2025, June 30, 2025, March 31, 2025, December 31, 2024 and September 30, 2024 respectively.**

**(B) Includes $(1,570), $(1,309), $(1,085), $(1,624) and $(845) in after-tax unrealized losses on available for sale securities for the quarterly periods ended September 30, 2025, June 30, 2025, March 31, 2025, December 31, 2024 and September 30, 2024, respectively.**

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**Prosperity Bancshares, Inc.**<sup>®</sup>

**Financial Highlights (Unaudited)**

**(In thousands)**

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| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Year-to-Date** | **Year-to-Date** |
|  | **Sep 30,<br>2025** | **Jun 30,<br>2025** | **Mar 31,<br>2025** | **Dec 31,<br>2024** | **Sep 30,<br>2024** | **Sep 30,<br>2025** | **Sep 30,<br>2024** |
| **Income Statement Data** |  |  |  |  |  |  |  |
| Interest income: |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Loans | $329445 | $325490 | $319023 | $333055 | $337451 | $973958 | $980107 |
| &nbsp;&nbsp;&nbsp;&nbsp;Securities<sup>(C)</sup> | 58207 | 57836 | 57886 | 58260 | 59617 | 173929 | 188466 |
| &nbsp;&nbsp;&nbsp;&nbsp;Federal funds sold and other earning assets | 10455 | 9438 | 15896 | 19630 | 20835 | 35789 | 44195 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total interest income | 398107 | 392764 | 392805 | 410945 | 417903 | 1183676 | 1212768 |
| Interest expense: |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Deposits | 95965 | 93790 | 95597 | 102050 | 107758 | 285352 | 306574 |
| &nbsp;&nbsp;&nbsp;&nbsp;Other borrowings | 27613 | 30101 | 30492 | 39620 | 46792 | 88206 | 142020 |
| &nbsp;&nbsp;&nbsp;&nbsp;Securities sold under repurchase agreements | 1094 | 1151 | 1334 | 1501 | 1662 | 3579 | 5453 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total interest expense | 124672 | 125042 | 127423 | 143171 | 156212 | 377137 | 454047 |
| Net interest income | 273435 | 267722 | 265382 | 267774 | 261691 | 806539 | 758721 |
| Provision for credit losses |  |  |  |  |  |  | 9066 |
| Net interest income after provision for credit losses | 273435 | 267722 | 265382 | 267774 | 261691 | 806539 | 749655 |
| Noninterest income: |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Nonsufficient funds (NSF) fees | 9805 | 8885 | 9147 | 9960 | 9016 | 27837 | 25457 |
| &nbsp;&nbsp;&nbsp;&nbsp;Credit card, debit card and ATM card income | 9446 | 9761 | 8739 | 9443 | 9620 | 27946 | 27865 |
| &nbsp;&nbsp;&nbsp;&nbsp;Service charges on deposit accounts | 7317 | 7645 | 7408 | 6992 | 6664 | 22370 | 19506 |
| &nbsp;&nbsp;&nbsp;&nbsp;Trust income | 3526 | 3859 | 3601 | 3514 | 3479 | 10986 | 11236 |
| &nbsp;&nbsp;&nbsp;&nbsp;Mortgage income | 931 | 965 | 1009 | 779 | 962 | 2905 | 2317 |
| &nbsp;&nbsp;&nbsp;&nbsp;Brokerage income | 1328 | 1225 | 1262 | 1063 | 1258 | 3815 | 3679 |
| &nbsp;&nbsp;&nbsp;&nbsp;Bank owned life insurance income | 2111 | 1985 | 2115 | 2020 | 2028 | 6211 | 5960 |
| &nbsp;&nbsp;&nbsp;&nbsp;Net gain (loss) on sale or write-down of assets | 3 | 1414 | (235) | 584 | 3178 | 1182 | 2240 |
| &nbsp;&nbsp;&nbsp;&nbsp;Net gain on sale or write-up of securities |  |  |  |  | 224 |  | 11245 |
| &nbsp;&nbsp;&nbsp;&nbsp;Other noninterest income | 6771 | 7243 | 8255 | 5482 | 4670 | 22269 | 16467 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total noninterest income | 41238 | 42982 | 41301 | 39837 | 41099 | 125521 | 125972 |
| Noninterest expense: |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Salaries and benefits | 87949 | 87296 | 89476 | 88631 | 88367 | 264721 | 263722 |
| &nbsp;&nbsp;&nbsp;&nbsp;Net occupancy and equipment | 9395 | 9168 | 9146 | 8957 | 9291 | 27709 | 26829 |
| &nbsp;&nbsp;&nbsp;&nbsp;Credit and debit card, data processing and software amortization | 12515 | 12056 | 11422 | 12342 | 11985 | 35993 | 34958 |
| &nbsp;&nbsp;&nbsp;&nbsp;Regulatory assessments and FDIC insurance | 5198 | 5508 | 5789 | 5789 | 5726 | 16495 | 21581 |
| &nbsp;&nbsp;&nbsp;&nbsp;Core deposit intangibles amortization | 3602 | 3610 | 3641 | 4131 | 4146 | 10853 | 11539 |
| &nbsp;&nbsp;&nbsp;&nbsp;Depreciation | 4966 | 4779 | 4774 | 4791 | 4741 | 14519 | 14263 |
| &nbsp;&nbsp;&nbsp;&nbsp;Communications | 3480 | 3507 | 3473 | 3450 | 3360 | 10460 | 10247 |
| &nbsp;&nbsp;&nbsp;&nbsp;Other real estate expense | 314 | 204 | 140 | 255 | 12 | 658 | 268 |
| &nbsp;&nbsp;&nbsp;&nbsp;Net (gain) loss on sale or write-down of other real estate | (81) | (222) | (30) | (610) | (97) | (333) | (204) |
| &nbsp;&nbsp;&nbsp;&nbsp;Merger related expenses | 62 |  |  |  | 63 | 62 | 4444 |
| &nbsp;&nbsp;&nbsp;&nbsp;Other noninterest expense | 11235 | 12659 | 12470 | 13809 | 12744 | 36364 | 41381 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total noninterest expense | 138635 | 138565 | 140301 | 141545 | 140338 | 417501 | 429028 |
| Income before income taxes | 176038 | 172139 | 166382 | 166066 | 162452 | 514559 | 446599 |
| Provision for income taxes | 38482 | 36984 | 36157 | 35990 | 35170 | 111623 | 97289 |
| Net income available to common shareholders | $137556 | $135155 | $130225 | $130076 | $127282 | $402936 | $349310 |

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**(C) Interest income on securities was reduced by net premium amortization of $2,877, $4,926, $5,027, $5,609 and $5,574 for the three months ended September 30, 2025, June 30, 2025, March 31, 2025, December 31, 2024 and September 30, 2024, respectively, and $12,830 and $17,227 for the nine months ended September 30, 2025 and 2024, respectively.**

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**Prosperity Bancshares, Inc.**<sup>®</sup>

**Financial Highlights (Unaudited)**

**(Dollars and share amounts in thousands, except per share data and market prices)**

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| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Year-to-Date** | **Year-to-Date** |
|  | **Sep 30,<br>2025** | **Jun 30,<br>2025** | **Mar 31,<br>2025** | **Dec 31,<br>2024** | **Sep 30,<br>2024** | **Sep 30,<br>2025** | **Sep 30,<br>2024** |
| **Profitability** |  |  |  |  |  |  |  |
| Net income <sup>(D) (E)</sup> | $137556 | $135155 | $130225 | $130076 | $127282 | $402936 | $349310 |
| Basic earnings per share | $1.45 | $1.42 | $1.37 | $1.37 | $1.34 | $4.23 | $3.68 |
| Diluted earnings per share | $1.45 | $1.42 | $1.37 | $1.37 | $1.34 | $4.23 | $3.68 |
| Return on average assets <sup>(F)</sup> <sup>(J)</sup> | 1.44% | 1.41% | 1.34% | 1.31% | 1.28% | 1.40% | 1.16% |
| Return on average common equity <sup>(F)</sup> <sup>(J)</sup> | 7.18% | 7.13% | 6.94% | 7.00% | 6.93% | 7.08% | 6.40% |
| Return on average tangible common equity <sup>(F)</sup> <sup>(G)</sup> <sup>(J)</sup> | 13.43% | 13.44% | 13.23% | 13.50% | 13.50% | 13.36% | 12.43% |
| Tax equivalent net interest margin <sup>(D) (E)</sup> <sup>(H)</sup> | 3.24% | 3.18% | 3.14% | 3.05% | 2.95% | 3.19% | 2.86% |
| Efficiency ratio <sup>(G) (I)</sup> <sup>(K)</sup> | 44.06% | 44.80% | 45.71% | 46.10% | 46.87% | 44.85% | 49.25% |
| **Liquidity and Capital Ratios** |  |  |  |  |  |  |  |
| Equity to assets | 20.00% | 19.78% | 19.39% | 18.80% | 18.35% | 20.00% | 18.35% |
| Common equity tier 1 capital | 17.53% | 17.10% | 16.92% | 16.42% | 15.84% | 17.53% | 15.84% |
| Tier 1 risk-based capital | 17.53% | 17.10% | 16.92% | 16.42% | 15.84% | 17.53% | 15.84% |
| Total risk-based capital | 18.78% | 18.35% | 18.17% | 17.67% | 17.09% | 18.78% | 17.09% |
| Tier 1 leverage capital | 11.90% | 11.62% | 11.20% | 10.82% | 10.52% | 11.90% | 10.52% |
| Period end tangible equity to period end tangible assets <sup>(G)</sup> | 11.81% | 11.58% | 11.23% | 10.75% | 10.36% | 11.81% | 10.36% |
| **Other Data** |  |  |  |  |  |  |  |
| Weighted-average shares used in computing earnings per common share |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Basic | 95093 | 95277 | 95266 | 95264 | 95261 | 95211 | 94912 |
| &nbsp;&nbsp;&nbsp;&nbsp;Diluted | 95093 | 95277 | 95266 | 95264 | 95261 | 95211 | 94912 |
| Period end shares outstanding | 94993 | 95277 | 95258 | 95275 | 95261 | 94993 | 95261 |
| Cash dividends paid per common share | $0.58 | $0.58 | $0.58 | $0.58 | $0.56 | $1.74 | $1.68 |
| Book value per common share | $80.69 | $79.76 | $78.91 | $78.07 | $77.27 | $80.69 | $77.27 |
| Tangible book value per common share <sup>(G)</sup> | $43.23 | $42.38 | $41.48 | $40.61 | $39.75 | $43.23 | $39.75 |
| Common Stock Market Price |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;High | $75.44 | $74.56 | $82.75 | $86.76 | $74.87 | $82.75 | $74.87 |
| &nbsp;&nbsp;&nbsp;&nbsp;Low | $64.27 | $61.57 | $68.96 | $68.94 | $58.66 | $61.57 | $57.16 |
| &nbsp;&nbsp;&nbsp;&nbsp;Period end closing price | $66.35 | $70.24 | $71.37 | $75.35 | $72.07 | $66.35 | $72.07 |
| Employees – FTE (excluding overtime) | 3937 | 3921 | 3898 | 3916 | 3896 | 3937 | 3896 |
| Number of banking centers | 283 | 283 | 284 | 283 | 287 | 283 | 287 |

---

**(D) Includes purchase accounting adjustments for the periods presented as follows:** 

---

| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
|  | &nbsp;&nbsp;**Three Months Ended** | &nbsp;&nbsp;**Three Months Ended** | &nbsp;&nbsp;**Three Months Ended** | &nbsp;&nbsp;**Three Months Ended** | &nbsp;&nbsp;**Three Months Ended** | &nbsp;&nbsp;**Year-to-Date** | &nbsp;&nbsp;**Year-to-Date** |
|  | &nbsp;&nbsp;**Sep 30,**<br>**2025** | &nbsp;&nbsp;**Jun 30,**<br>**2025** | &nbsp;&nbsp;**Mar 31,**<br>**2025** | &nbsp;&nbsp;**Dec 31,**<br>**2024** | &nbsp;&nbsp;**Sep 30,**<br>**2024** | &nbsp;&nbsp;**Sep 30,**<br>**2025** | &nbsp;&nbsp;**Sep 30,**<br>**2024** |
| &nbsp;&nbsp;**Loan discount accretion** |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Non-PCD** | &nbsp;&nbsp;**$2242** | &nbsp;&nbsp;**$2486** | &nbsp;&nbsp;**$2615** | &nbsp;&nbsp;**$2761** | &nbsp;&nbsp;**$3616** | &nbsp;&nbsp;**$7343** | &nbsp;&nbsp;**$9725** |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**PCD** | &nbsp;&nbsp;**$613** | &nbsp;&nbsp;**$638** | &nbsp;&nbsp;**$677** | &nbsp;&nbsp;**$850** | &nbsp;&nbsp;**$1212** | &nbsp;&nbsp;**$1928** | &nbsp;&nbsp;**$4154** |
| &nbsp;&nbsp;&nbsp;&nbsp;**Securities net accretion** | &nbsp;&nbsp;**$395** | &nbsp;&nbsp;**$409** | &nbsp;&nbsp;**$705** | &nbsp;&nbsp;**$528** | &nbsp;&nbsp;**$555** | &nbsp;&nbsp;**$1509** | &nbsp;&nbsp;**$1680** |
| &nbsp;&nbsp;&nbsp;&nbsp;**Time deposits amortization** | &nbsp;&nbsp;**$(1)** | &nbsp;&nbsp;**$(2)** | &nbsp;&nbsp;**$(9)** | &nbsp;&nbsp;**$(21)** | &nbsp;&nbsp;**$(40)** | &nbsp;&nbsp;**$(12)** | &nbsp;&nbsp;**$(133)** |

---

**(E) Using effective tax rate of 21.9%, 21.5%, 21.7%, 21.7% and 21.6% for the three months ended September 30, 2025, June 30, 2025, March 31, 2025, December 31, 2024 and September 30, 2024, respectively, and 21.7% and 21.8% for the nine months ended September 30, 2025 and 2024, respectively.**

**(F) Interim periods annualized.**

**(G) Refer to the "Notes to Selected Financial Data" at the end of this Earnings Release for a reconciliation of this non-GAAP financial measure to the nearest GAAP financial measure.**

**(H) Net interest margin for all periods presented is based on average balances on an actual 365-day or 366-day basis.**

**(I) Calculated by dividing total noninterest expense, excluding credit loss provisions, by net interest income plus noninterest income, excluding net gains and losses on the sale, write-down or write-up of assets and securities. Additionally, taxes are not part of this calculation.** 

**(J) For calculations of the annualized returns on average assets, average common equity and average tangible common equity excluding merger related provision for credit losses, net of tax, merger related expenses, net of tax, FDIC special assessment, net of tax, and net gain on sale or write-up of securities, net of tax refer to the "Notes to Selected Financial Data" at the end of this Earnings Release for a reconciliation of this non-GAAP financial measure to the nearest GAAP financial measure.**

**(K) For calculations of the efficiency ratio excluding merger related expenses and FDIC special assessment refer to the "Notes to Selected Financial Data" at the end of this Earnings Release for a reconciliation of these non-GAAP financial measures to the nearest respective GAAP financial measures.**

------

**Prosperity Bancshares, Inc.**<sup>®</sup>

**Financial Highlights (Unaudited)**

**(Dollars in thousands)**

---

| | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| **YIELD ANALYSIS** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** |
|  | **Sep 30, 2025** | **Sep 30, 2025** | **Sep 30, 2025** | **Jun 30, 2025** | **Jun 30, 2025** | **Jun 30, 2025** | **Sep 30, 2024** | **Sep 30, 2024** | **Sep 30, 2024** |
|  | **Average<br>Balance** | **Interest<br>Earned/<br>Interest<br>Paid** | **Average<br>Yield/<br>Rate**<br> <sup>(L)</sup> | **Average<br>Balance** | **Interest<br>Earned/<br>Interest<br>Paid** | **Average<br>Yield/<br>Rate**<br> <sup>(L)</sup> | **Average<br>Balance** | **Interest<br>Earned/<br>Interest<br>Paid** | **Average<br>Yield/<br>Rate**<br> <sup>(L)</sup> |
| Interest-earning assets: |  |  |  |  |  |  |  |  |  |
| Loans held for sale | $8371 | $140 | 6.64% | $9813 | $166 | 6.79% | $7913 | $137 | 6.89% |
| Loans held for investment | 20851896 | 309949 | 5.90% | 20907400 | 306671 | 5.88% | 21107139 | 316939 | 5.97% |
| Loans held for investment - Warehouse Purchase Program | 1217579 | 19356 | 6.31% | 1179307 | 18653 | 6.34% | 1114681 | 20375 | 7.27% |
| &nbsp;&nbsp;Total loans | 22077846 | 329445 | 5.92% | 22096520 | 325490 | 5.91% | 22229733 | 337451 | 6.04% |
| Investment securities | 10530807 | 58207 | 2.19%<br> <sup>(M)</sup> | 10867856 | 57836 | 2.13%<br> <sup>(M)</sup> | 11612193 | 59617 | 2.04%<br> <sup>(M)</sup> |
| Federal funds sold and other earning assets | 934318 | 10455 | 4.44% | 841933 | 9438 | 4.50% | 1531788 | 20835 | 5.41% |
| &nbsp;&nbsp;&nbsp;&nbsp;Total interest-earning assets | 33542971 | 398107 | 4.71% | 33806309 | 392764 | 4.66% | 35373714 | 417903 | 4.70% |
| Allowance for credit losses on loans | (343872) |  |  | (348310) |  |  | (358237) |  |  |
| Noninterest-earning assets | 4930764 |  |  | 4933215 |  |  | 4873725 |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Total assets | $38129863 |  |  | $38391214 |  |  | $39889202 |  |  |
| Interest-bearing liabilities: |  |  |  |  |  |  |  |  |  |
| Interest-bearing demand deposits | $4656452 | $8951 | 0.76% | $4807864 | $8859 | 0.74% | $4774975 | $9251 | 0.77% |
| Savings and money market deposits | 8977585 | 46934 | 2.07% | 8944897 | 45796 | 2.05% | 8908315 | 49824 | 2.23% |
| Certificates and other time deposits | 4422996 | 40080 | 3.60% | 4366510 | 39135 | 3.59% | 4564232 | 48683 | 4.24% |
| Other borrowings | 2480435 | 27613 | 4.42% | 2717583 | 30101 | 4.44% | 3900000 | 46792 | 4.77% |
| Securities sold under repurchase agreements | 187462 | 1094 | 2.32% | 194577 | 1151 | 2.37% | 242813 | 1662 | 2.72% |
| &nbsp;&nbsp;Total interest-bearing liabilities | 20724930 | 124672 | 2.39%<br> <sup>(N)</sup> | 21031431 | 125042 | 2.38%<br> <sup>(N)</sup> | 22390335 | 156212 | 2.78%<br> <sup>(N)</sup> |
| Noninterest-bearing liabilities: |  |  |  |  |  |  |  |  |  |
| Noninterest-bearing demand deposits | 9451153 |  |  | 9508845 |  |  | 9680785 |  |  |
| Allowance for credit losses on off-balance sheet credit exposures | 37646 |  |  | 37646 |  |  | 37646 |  |  |
| Other liabilities | 258156 |  |  | 227002 |  |  | 433171 |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Total liabilities | 30471885 |  |  | 30804924 |  |  | 32541937 |  |  |
| Shareholders' equity | 7657978 |  |  | 7586290 |  |  | 7347265 |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Total liabilities and shareholders' equity | $38129863 |  |  | $38391214 |  |  | $39889202 |  |  |
| Net interest income and margin |  | $273435 | 3.23% |  | $267722 | 3.18% |  | $261691 | 2.94% |
| Non-GAAP to GAAP reconciliation: |  |  |  |  |  |  |  |  |  |
| Tax equivalent adjustment |  | 807 |  |  | 574 |  |  | 808 |  |
| Net interest income and margin<br>&nbsp;&nbsp;&nbsp;&nbsp; (tax equivalent basis) |  | $274242 | 3.24% |  | $268296 | 3.18% |  | $262499 | 2.95% |

---

**(L) Annualized and based on an actual 365-day or 366-day basis.**

**(M) Yield on securities was impacted by net premium amortization of $2,877, $4,926, and $5,574 for the three months ended September 30, 2025, June 30, 2025 and September 30, 2024, respectively.**

**(N) Total cost of funds, including noninterest bearing deposits, was 1.64%, 1.64% and 1.94% for the three months ended September 30, 2025, June 30, 2025 and September 30, 2024, respectively.**

------

**Prosperity Bancshares, Inc.**<sup>®</sup>

**Financial Highlights (Unaudited)**

**(Dollars in thousands)**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **YIELD ANALYSIS** | **Year-to-Date** | **Year-to-Date** | **Year-to-Date** | **Year-to-Date** | **Year-to-Date** | **Year-to-Date** |
|  | **Sep 30, 2025** | **Sep 30, 2025** | **Sep 30, 2025** | **Sep 30, 2024** | **Sep 30, 2024** | **Sep 30, 2024** |
|  | **Average<br>Balance** | **Interest<br>Earned/<br>Interest<br>Paid** | **Average<br>Yield/<br>Rate**<br> <sup>(O)</sup> | **Average<br>Balance** | **Interest<br>Earned/<br>Interest<br>Paid** | **Average<br>Yield/<br>Rate**<br> <sup>(O)</sup> |
| Interest-earning assets: |  |  |  |  |  |  |
| Loans held for sale | $8588 | $433 | 6.74% | $7278 | $378 | 6.94% |
| Loans held for investment | 20905781 | 921688 | 5.89% | 21312440 | 928973 | 5.82% |
| Loans held for investment - Warehouse Purchase Program | 1092241 | 51837 | 6.35% | 918172 | 50756 | 7.38% |
| &nbsp;&nbsp;Total loans | 22006610 | 973958 | 5.92% | 22237890 | 980107 | 5.89% |
| Investment securities | 10803572 | 173929 | 2.15%<br> <sup>(P)</sup> | 12161391 | 188466 | 2.07%<br> <sup>(P)</sup> |
| Federal funds sold and other earning assets | 1071293 | 35789 | 4.47% | 1153335 | 44195 | 5.12% |
| &nbsp;&nbsp;&nbsp;&nbsp;Total interest-earning assets | 33881475 | 1183676 | 4.67% | 35552616 | 1212768 | 4.56% |
| Allowance for credit losses on loans | (347607) |  |  | (341659) |  |  |
| Noninterest-earning assets | 4955209 |  |  | 4823938 |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Total assets | $38489077 |  |  | $40034895 |  |  |
| Interest-bearing liabilities: |  |  |  |  |  |  |
| Interest-bearing demand deposits | $4894289 | $26829 | 0.73% | $4947514 | $26807 | 0.72% |
| Savings and money market deposits | 8976481 | 138375 | 2.06% | 9060992 | 147228 | 2.17% |
| Certificates and other time deposits | 4405329 | 120148 | 3.65% | 4356700 | 132539 | 4.06% |
| Other borrowings | 2657143 | 88206 | 4.44% | 3960821 | 142020 | 4.79% |
| Securities sold under repurchase agreements | 199883 | 3579 | 2.39% | 265878 | 5453 | 2.74% |
| &nbsp;&nbsp;&nbsp;&nbsp;Total interest-bearing liabilities | 21133125 | 377137 | 2.39%<br> <sup>(Q)</sup> | 22591905 | 454047 | 2.68%<br> <sup>(Q)</sup> |
| Noninterest-bearing liabilities: |  |  |  |  |  |  |
| Noninterest-bearing demand deposits | 9487984 |  |  | 9759927 |  |  |
| Allowance for credit losses on off-balance sheet credit exposures | 37646 |  |  | 36994 |  |  |
| Other liabilities | 246408 |  |  | 372060 |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Total liabilities | 30905163 |  |  | 32760886 |  |  |
| Shareholders' equity | 7583914 |  |  | 7274009 |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Total liabilities and shareholders' equity | $38489077 |  |  | $40034895 |  |  |
| Net interest income and margin |  | $806539 | 3.18% |  | $758721 | 2.85% |
| Non-GAAP to GAAP reconciliation: |  |  |  |  |  |  |
| Tax equivalent adjustment |  | 1671 |  |  | 2416 |  |
| Net interest income and margin (tax equivalent basis) |  | $808210 | 3.19% |  | $761137 | 2.86% |

---

**(O) Based on an actual 365-day or 366-day basis.**

**(P) Yield on securities was impacted by net premium amortization of $12,830 and $17,227 for the nine months ended September 30, 2025 and 2024, respectively.**

**(Q) Total cost of funds, including noninterest bearing deposits, was 1.65% and 1.87% for the nine months ended September 30, 2025 and 2024, respectively.**

------

**Prosperity Bancshares, Inc.**<sup>®</sup>

**Financial Highlights (Unaudited)**

**(Dollars in thousands)**

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** |
|  | **Sep 30, 2025** | **Jun 30, 2025** | **Mar 31, 2025** | **Dec 31, 2024** | **Sep 30, 2024** |
| **YIELD TREND** <sup>(R)</sup> |  |  |  |  |  |
| **Interest-Earning Assets:** |  |  |  |  |  |
| Loans held for sale | 6.64% | 6.79% | 6.80% | 6.68% | 6.89% |
| Loans held for investment | 5.90% | 5.88% | 5.90% | 5.93% | 5.97% |
| Loans held for investment - Warehouse Purchase Program | 6.31% | 6.34% | 6.40% | 6.66% | 7.27% |
| &nbsp;&nbsp;Total loans | 5.92% | 5.91% | 5.92% | 5.97% | 6.04% |
| Investment securities <sup>(S)</sup> | 2.19% | 2.13% | 2.13% | 2.06% | 2.04% |
| Federal funds sold and other earning assets | 4.44% | 4.50% | 4.47% | 4.80% | 5.41% |
| &nbsp;&nbsp;&nbsp;&nbsp;Total interest-earning assets | 4.71% | 4.66% | 4.64% | 4.66% | 4.70% |
| **Interest-Bearing Liabilities:** |  |  |  |  |  |
| Interest-bearing demand deposits | 0.76% | 0.74% | 0.70% | 0.70% | 0.77% |
| Savings and money market deposits | 2.07% | 2.05% | 2.06% | 2.10% | 2.23% |
| Certificates and other time deposits | 3.60% | 3.59% | 3.75% | 4.06% | 4.24% |
| Other borrowings | 4.42% | 4.44% | 4.45% | 4.73% | 4.77% |
| Securities sold under repurchase agreements | 2.32% | 2.37% | 2.48% | 2.58% | 2.72% |
| &nbsp;&nbsp;&nbsp;&nbsp;Total interest-bearing liabilities | 2.39% | 2.38% | 2.39% | 2.60% | 2.78% |
| Net Interest Margin | 3.23% | 3.18% | 3.14% | 3.04% | 2.94% |
| Net Interest Margin (tax equivalent) | 3.24% | 3.18% | 3.14% | 3.05% | 2.95% |

---

**(R) Annualized and based on average balances on an actual 365-day or 366-day basis.**

**(S) Yield on securities was impacted by net premium amortization of $2,877, $4,926, $5,027, $5,609 and $5,574 for the three months ended September 30, 2025, June 30, 2025, March 31, 2025, December 31, 2024 and September 30, 2024, respectively.**

------

**Prosperity Bancshares, Inc.**<sup>®</sup>

**Financial Highlights (Unaudited)**

**(Dollars in thousands)**

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** |
|  | **Sep 30, 2025** | **Jun 30, 2025** | **Mar 31, 2025** | **Dec 31, 2024** | **Sep 30, 2024** |
| **Balance Sheet Averages** |  |  |  |  |  |
| Loans held for sale | $8371 | $9813 | $7570 | $8571 | $7913 |
| Loans held for investment | 20851896 | 20907400 | 20959226 | 21038694 | 21107139 |
| Loans held for investment - Warehouse Purchase Program | 1217579 | 1179307 | 876086 | 1137113 | 1114681 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total loans | 22077846 | 22096520 | 21842882 | 22184378 | 22229733 |
| Investment securities | 10530807 | 10867856 | 11017400 | 11265535 | 11612193 |
| Federal funds sold and other earning assets | 934318 | 841933 | 1443220 | 1628050 | 1531788 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total interest-earning assets | 33542971 | 33806309 | 34303502 | 35077963 | 35373714 |
| Allowance for credit losses on loans | (343872) | (348310) | (350715) | (353560) | (358237) |
| Cash and due from banks | 291809 | 294379 | 326066 | 317420 | 304911 |
| Goodwill | 3503127 | 3503127 | 3503128 | 3505030 | 3504300 |
| Core deposit intangibles, net | 56956 | 60739 | 64293 | 68167 | 72330 |
| Other real estate | 11533 | 8749 | 7105 | 6778 | 5339 |
| Fixed assets, net | 377680 | 374486 | 374448 | 373561 | 375626 |
| Other assets | 689659 | 691735 | 729251 | 632040 | 611219 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total assets | $38129863 | $38391214 | $38957078 | $39627399 | $39889202 |
| Noninterest-bearing deposits | $9451153 | $9508845 | $9504540 | $9829912 | $9680785 |
| Interest-bearing demand deposits | 4656452 | 4807864 | 5224796 | 4845174 | 4774975 |
| Savings and money market deposits | 8977585 | 8944897 | 9007286 | 8915410 | 8908315 |
| Certificates and other time deposits | 4422996 | 4366510 | 4426521 | 4552445 | 4564232 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total deposits | 27508186 | 27628116 | 28163143 | 28142941 | 27928307 |
| Other borrowings | 2480435 | 2717583 | 2776667 | 3332609 | 3900000 |
| Securities sold under repurchase agreements | 187462 | 194577 | 217945 | 231240 | 242813 |
| Allowance for credit losses on off-balance sheet credit exposures | 37646 | 37646 | 37646 | 37646 | 37646 |
| Other liabilities | 258156 | 227002 | 255876 | 454298 | 433171 |
| Shareholders' equity | 7657978 | 7586290 | 7505801 | 7428665 | 7347265 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total liabilities and equity | $38129863 | $38391214 | $38957078 | $39627399 | $39889202 |

---

------

**Prosperity Bancshares, Inc.**<sup>®</sup>

**Financial Highlights (Unaudited)**

**(Dollars in thousands)**

---

| | | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **Sep 30, 2025** | **Sep 30, 2025** | **Jun 30, 2025** | **Jun 30, 2025** | **Mar 31, 2025** | **Mar 31, 2025** | **Dec 31, 2024** | **Dec 31, 2024** | **Sep 30, 2024** | **Sep 30, 2024** |
| **Period End Balances** |  |  |  |  |  |  |  |  |  |  |
| **Loan Portfolio** |  |  |  |  |  |  |  |  |  |  |
| Commercial and industrial | $1879282 | 8.5% | $1897117 | 8.6% | $1915124 | 8.7% | $1962111 | 8.8% | $1970844 | 8.8% |
| Warehouse purchase program | 1278178 | 5.8% | 1287440 | 5.8% | 1057893 | 4.8% | 1080903 | 4.9% | 1228706 | 5.5% |
| Construction, land development and other land loans | 2865279 | 13.0% | 2873238 | 12.9% | 2845082 | 13.0% | 2859281 | 12.9% | 2814521 | 12.6% |
| 1-4 family residential | 7461900 | 33.9% | 7530816 | 33.9% | 7576350 | 34.5% | 7581450 | 34.2% | 7557858 | 33.8% |
| Home equity | 848740 | 3.9% | 869370 | 3.9% | 896529 | 4.1% | 906139 | 4.1% | 919676 | 4.1% |
| Commercial real estate (includes multi-family residential) | 5796937 | 26.3% | 5827645 | 26.3% | 5783410 | 26.3% | 5800985 | 26.2% | 5869687 | 26.2% |
| Agriculture (includes farmland) | 1019589 | 4.6% | 1029250 | 4.6% | 1013960 | 4.6% | 1033546 | 4.7% | 1033224 | 4.6% |
| Consumer and other | 366027 | 1.7% | 368747 | 1.7% | 378821 | 1.7% | 378817 | 1.7% | 413548 | 1.8% |
| Energy | 511837 | 2.3% | 513765 | 2.3% | 510401 | 2.3% | 545977 | 2.5% | 572788 | 2.6% |
| &nbsp;&nbsp;&nbsp;&nbsp;Total loans | $22027769 |  | $22197388 |  | $21977570 |  | $22149209 |  | $22380852 |  |
| **Deposit Types** |  |  |  |  |  |  |  |  |  |  |
| Noninterest-bearing DDA | $9522028 | 34.3% | $9426657 | 34.3% | $9675915 | 34.5% | $9798438 | 34.5% | $9811361 | 34.9% |
| Interest-bearing DDA | 4766146 | 17.2% | 4708251 | 17.1% | 4931769 | 17.6% | 5182035 | 18.3% | 4800758 | 17.1% |
| Money market | 6402591 | 23.0% | 6302770 | 23.0% | 6339509 | 22.6% | 6229022 | 21.9% | 6166792 | 22.0% |
| Savings | 2616196 | 9.4% | 2667859 | 9.7% | 2703736 | 9.7% | 2685496 | 9.5% | 2707982 | 9.6% |
| Certificates and other time deposits | 4475133 | 16.1% | 4367874 | 15.9% | 4375870 | 15.6% | 4486347 | 15.8% | 4600718 | 16.4% |
| &nbsp;&nbsp;&nbsp;&nbsp;Total deposits | $27782094 |  | $27473411 |  | $28026799 |  | $28381338 |  | $28087611 |  |
| Loan to Deposit Ratio | 79.3% |  | 80.8% |  | 78.4% |  | 78.0% |  | 79.7% |  |

---

------

**Prosperity Bancshares, Inc.**<sup>®</sup>

**Financial Highlights (Unaudited)**

**(Dollars in thousands)**

**Construction Loans**

---

| | | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **Sep 30, 2025** | **Sep 30, 2025** | **Jun 30, 2025** | **Jun 30, 2025** | **Mar 31, 2025** | **Mar 31, 2025** | **Dec 31, 2024** | **Dec 31, 2024** | **Sep 30, 2024** | **Sep 30, 2024** |
| Single family residential construction | $665194 | 23.2% | $696569 | 24.2% | $727417 | 25.6% | $778067 | 27.2% | $836571 | 29.7% |
| Land development | 248616 | 8.7% | 227254 | 7.9% | 225784 | 7.9% | 260158 | 9.1% | 256571 | 9.1% |
| Raw land | 230021 | 8.0% | 248380 | 8.7% | 261918 | 9.2% | 278892 | 9.7% | 263411 | 9.4% |
| Residential lots | 203396 | 7.1% | 217835 | 7.6% | 219115 | 7.7% | 209850 | 7.3% | 217920 | 7.7% |
| Commercial lots | 59853 | 2.1% | 55176 | 1.9% | 56343 | 2.0% | 59044 | 2.1% | 58472 | 2.1% |
| Commercial construction and other | 1459255 | 50.9% | 1428985 | 49.7% | 1355587 | 47.6% | 1274619 | 44.6% | 1183127 | 42.0% |
| Net unaccreted discount | (1056) |  | (961) |  | (1082) |  | (1349) |  | (1551) |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Total construction loans | $2865279 |  | $2873238 |  | $2845082 |  | $2859281 |  | $2814521 |  |

---

**Non-Owner Occupied Commercial Real Estate Loans by Metropolitan Statistical Area (MSA) as of September 30, 2025**

---

| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **Houston** | **Dallas** | **Austin** | **OK City** | **Tulsa** | **Other** <sup>(T)</sup> | **Total** |
| **Collateral Type** |  |  |  |  |  |  |  |
| Shopping center/retail | $328842 | $230333 | $122499 | $15103 | $12002 | $319570 | $1028349 |
| Commercial and industrial buildings | 179377 | 103862 | 24433 | 32680 | 12026 | 256858 | 609236 |
| Office buildings | 99991 | 280699 | 68563 | 43802 | 4224 | 94839 | 592118 |
| Medical buildings | 105993 | 16818 | 1642 | 41745 | 26479 | 64595 | 257272 |
| Apartment buildings | 107677 | 127757 | 64215 | 11115 | 13508 | 209436 | 533708 |
| Hotel | 106613 | 116016 | 30162 | 13349 |  | 176330 | 442470 |
| Other | 170647 | 59768 | 19364 | 5654 | 6868 | 93779 | 356080 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total | $1099140 | $935253 | $330878 | $163448 | $75107 | $1215407 | $3819233<br> <sup>(U)</sup> |

---

**Acquired Loans**

---

| | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **Non-PCD Loans** | **Non-PCD Loans** | **Non-PCD Loans** | **PCD Loans** | **PCD Loans** | **PCD Loans** | **Total Acquired Loans** | **Total Acquired Loans** | **Total Acquired Loans** |
|  | **Balance at <br>Acquisition <br>Date** | **Balance at<br>Jun 30,<br>2025** | **Balance at<br>Sep 30,<br>2025** | **Balance at <br>Acquisition<br>Date** | **Balance at<br>Jun 30,<br>2025** | **Balance at<br>Sep 30,<br>2025** | **Balance at <br>Acquisition<br>Date** | **Balance at<br>Jun 30,<br>2025** | **Balance at<br>Sep 30,<br>2025** |
| **Loan marks:** |  |  |  |  |  |  |  |  |  |
| Acquired banks <sup>(V)</sup> | $388625 | $22766 | $20406 | $332400 | $6075 | $5472 | $721025 | $28841 | $25878 |
| **Acquired portfolio loan balances:** |  |  |  |  |  |  |  |  |  |
| Acquired banks <sup>(V)</sup> | 14323981 | 1786602 | 1609115 | 1376673 | 387143 | 350644 | 15700654<br> <sup>(W)</sup> | 2173745 | 1959759 |
| **Acquired portfolio loan balances less loan marks** | $13935356 | $1763836 | $1588709 | $1044273 | $381068 | $345172 | $14979629 | $2144904 | $1933881 |

---

**(T) Includes other MSA and non-MSA regions.**

**(U) Represents a portion of total commercial real estate loans of $5.797 billion as of September 30, 2025.**

**(V) Includes Bank Arlington, American State Bank, Community National Bank, First Federal Bank Texas, Coppermark Bank, First Victoria National Bank, The F&M Bank & Trust Company, Tradition Bank, LegacyTexas Bank, FirstCapital Bank and Lone Star Bank.**

**(W) Actual principal balances acquired.**

------

**Prosperity Bancshares, Inc.**<sup>®</sup>

**Financial Highlights (Unaudited)**

**(Dollars in thousands)**

---

| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Year-to-Date** | **Year-to-Date** |
|  | **Sep 30,<br>2025** | **Jun 30,<br>2025** | **Mar 31,<br>2025** | **Dec 31,<br>2024** | **Sep 30,<br>2024** | **Sep 30,<br>2025** | **Sep 30,<br>2024** |
| **Asset Quality** |  |  |  |  |  |  |  |
| Nonaccrual loans | $105529 | $102031 | $73287 | $73647 | $83969 | $105529 | $83969 |
| Accruing loans 90 or more days past due | 268 | 576 | 91 | 2189 | 20 | 268 | 20 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total nonperforming loans | 105797 | 102607 | 73378 | 75836 | 83989 | 105797 | 83989 |
| Repossessed assets | 16 | 6 | 29 | 4 | 177 | 16 | 177 |
| Other real estate | 13750 | 7874 | 8012 | 5701 | 5757 | 13750 | 5757 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total nonperforming assets | $119563 | $110487 | $81419 | $81541 | $89923 | $119563 | $89923 |
| Nonperforming assets: |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Commercial and industrial (includes energy) | $27880 | $27680 | $8966 | $10080 | $13642 | $27880 | $13642 |
| &nbsp;&nbsp;&nbsp;&nbsp;Construction, land development and other land loans | 583 | 1859 | 1952 | 4481 | 4053 | 583 | 4053 |
| &nbsp;&nbsp;&nbsp;&nbsp;1-4 family residential (includes home equity) | 57241 | 50501 | 42481 | 44824 | 36660 | 57241 | 36660 |
| &nbsp;&nbsp;&nbsp;&nbsp;Commercial real estate (includes multi-family residential) | 11471 | 12865 | 12257 | 18861 | 32803 | 11471 | 32803 |
| &nbsp;&nbsp;&nbsp;&nbsp;Agriculture (includes farmland) | 17080 | 17547 | 15725 | 3208 | 2686 | 17080 | 2686 |
| &nbsp;&nbsp;&nbsp;&nbsp;Consumer and other | 5308 | 35 | 38 | 87 | 79 | 5308 | 79 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total | $119563 | $110487 | $81419 | $81541 | $89923 | $119563 | $89923 |
| Number of loans/properties | 424 | 392 | 363 | 368 | 346 | 424 | 346 |
| Allowance for credit losses on loans | $339626 | $346084 | $349101 | $351805 | $354397 | $339626 | $354397 |
| Net charge-offs (recoveries): |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Commercial and industrial (includes energy) | $3341 | $1044 | $330 | $405 | $3309 | $4715 | $6369 |
| &nbsp;&nbsp;&nbsp;&nbsp;Construction, land development and other land loans | 34 | (3) | (156) | 294 | 378 | (125) | 485 |
| &nbsp;&nbsp;&nbsp;&nbsp;1-4 family residential (includes home equity) | 853 | 342 | 1051 | 180 | 409 | 2246 | 1291 |
| &nbsp;&nbsp;&nbsp;&nbsp;Commercial real estate (includes multi-family residential) | 1015 | 55 | 178 | 362 | 258 | 1248 | (140) |
| &nbsp;&nbsp;&nbsp;&nbsp;Agriculture (includes farmland) | (40) | (14) |  | 5 | (116) | (54) | 121 |
| &nbsp;&nbsp;&nbsp;&nbsp;Consumer and other | 1255 | 1593 | 1301 | 1346 | 1217 | 4149 | 3840 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total | $6458 | $3017 | $2704 | $2592 | $5455 | $12179 | $11966 |
| **Asset Quality Ratios** |  |  |  |  |  |  |  |
| Nonperforming assets to average interest-earning assets | 0.36% | 0.33% | 0.24% | 0.23% | 0.25% | 0.35% | 0.25% |
| Nonperforming assets to loans and other real estate | 0.54% | 0.50% | 0.37% | 0.37% | 0.40% | 0.54% | 0.40% |
| Net charge-offs to average loans (annualized) | 0.12% | 0.05% | 0.05% | 0.05% | 0.10% | 0.07% | 0.07% |
| Allowance for credit losses on loans to total loans | 1.54% | 1.56% | 1.59% | 1.59% | 1.58% | 1.54% | 1.58% |
| Allowance for credit losses on loans to total loans, excluding Warehouse Purchase Program loans <sup>(G)</sup> | 1.64% | 1.66% | 1.67% | 1.67% | 1.68% | 1.64% | 1.68% |

---

------

**Prosperity Bancshares, Inc.**<sup>®</sup>

**Notes to Selected Financial Data (Unaudited)**

(Dollars and share amounts in thousands, except per share data)

**NOTES TO SELECTED FINANCIAL DATA**

Prosperity's management uses certain non-GAAP (generally accepted accounting principles) financial measures to evaluate its performance. Specifically, for internal planning and forecasting purposes, Prosperity reviews each of diluted earnings per share, return on average assets, return on average common equity, and return on average tangible common equity, in each case excluding merger related provision for credit losses, net of tax, merger related expenses, net of tax, FDIC special assessment, net of tax, and net gain on sale or write-up of securities, net of tax; return on average tangible common equity; tangible book value per share; the tangible equity to tangible assets ratio; allowance for credit losses to total loans excluding Warehouse Purchase Program loans; the efficiency ratio, excluding net gains and losses on the sale, write-down or write-up of assets and securities; and the efficiency ratio, excluding net gains and losses on the sale, write-down or write-up of assets and securities, merger related expenses and FDIC special assessment. In addition, due to the application of purchase accounting, Prosperity uses certain non-GAAP financial measures and ratios that exclude the impact of these items to evaluate its allowance for credit losses to total loans (excluding Warehouse Purchase Program loans). Prosperity has included information below relating to these non-GAAP financial measures for the applicable periods presented.

---

| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Year-to-Date** | **Year-to-Date** |
|  | **Sep 30,<br>2025** | **Jun 30,<br>2025** | **Mar 31,<br>2025** | **Dec 31,<br>2024** | **Sep 30,<br>2024** | **Sep 30,<br>2025** | **Sep 30,<br>2024** |
| **Reconciliation of diluted earnings per share to diluted earnings per share excluding merger related provision for credit losses, net of tax, merger related expenses, net of tax, FDIC special assessment, net of tax, and net gain on sale or write-up of securities, net of tax:** |  |  |  |  |  |  |  |
| Diluted earnings per share (unadjusted) | $1.45 | $1.42 | $1.37 | $1.37 | $1.34 | $4.23 | $3.68 |
| Net income | $137556 | $135155 | $130225 | $130076 | $127282 | $402936 | $349310 |
| &nbsp;&nbsp;&nbsp;Merger related provision for credit losses, net of tax<sup>(X)</sup> |  |  |  |  |  |  | 7162 |
| &nbsp;&nbsp;&nbsp;Merger related expenses, net of tax<sup>(X)</sup> | 49 |  |  |  | 50 | 49 | 3511 |
| &nbsp;&nbsp;&nbsp;FDIC special assessment, net of tax<sup>(X)</sup> |  |  |  |  |  |  | 2807 |
| &nbsp;&nbsp;&nbsp;Net gain on sale or write-up of securities, net of tax<sup>(X)</sup> |  |  |  |  | (177) |  | (8884) |
| Net income excluding merger related provision for credit losses, net of tax, merger related expenses, net of tax, FDIC special assessment, net of tax, and net gain on sale or write-up of securities, net of tax<sup>(X)</sup>: | $137605 | $135155 | $130225 | $130076 | $127155 | $402985 | $353906 |
| Weighted average diluted shares outstanding | 95093 | 95277 | 95266 | 95264 | 95261 | 95211 | 94912 |
| Merger related provision for credit losses, net of tax, per diluted common share<sup>(X)</sup> | $— | $— | $— | $— | $— | $— | $0.08 |
| Merger related expenses, net of tax, per diluted common share<sup>(X)</sup> | $— | $— | $— | $— | $— | $— | $0.04 |
| FDIC special assessment, net of tax, per diluted common share<sup>(X)</sup> | $— | $— | $— | $— | $— | $— | $0.03 |
| Net gain on sale or write-up of securities, net of tax, per diluted common share<sup>(X)</sup> | $— | $— | $— | $— | $— | $— | $(0.09) |
| Diluted earnings per share excluding merger related provision for credit losses, net of tax, merger related expenses, net of tax, FDIC special assessment, net of tax, and net gain on sale or write-up of securities, net of tax:<sup>(X)</sup> | $1.45 | $1.42 | $1.37 | $1.37 | $1.34 | $4.23 | $3.74 |
| **Reconciliation of return on average assets to return on average assets excluding merger related provision for credit losses, net of tax, merger related expenses, net of tax, FDIC special assessment, net of tax, and net gain on sale or write-up of securities, net of tax:** |  |  |  |  |  |  |  |
| Return on average assets (unadjusted) | 1.44% | 1.41% | 1.34% | 1.31% | 1.28% | 1.40% | 1.16% |
| Net income excluding merger related provision for credit losses, net of tax, merger related expenses, net of tax, FDIC special assessment, net of tax, and net gain on sale or write-up of securities, net of tax<sup>(X)</sup>: | $137605 | $135155 | $130225 | $130076 | $127155 | $402985 | $353906 |
| Average total assets | $38129863 | $38391214 | $38957078 | $39627399 | $39889202 | $38489077 | $40034895 |
| Return on average assets excluding merger related provision for credit losses, net of tax, merger related expenses, net of tax, FDIC special assessment, net of tax, and net gain on sale or write-up of securities, net of tax <sup>(F) (X)</sup> | 1.44% | 1.41% | 1.34% | 1.31% | 1.28% | 1.40% | 1.18% |

---

**(X) Calculated assuming a federal tax rate of 21.0%.**

------

---

| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Year-to-Date** | **Year-to-Date** |
|  | **Sep 30,<br>2025** | **Jun 30,<br>2025** | **Mar 31,<br>2025** | **Dec 31,<br>2024** | **Sep 30,<br>2024** | **Sep 30,<br>2025** | **Sep 30,<br>2024** |
| **Reconciliation of return on average common equity to return on average common equity excluding merger related provision for credit losses, net of tax, merger related expenses, net of tax, FDIC special assessment, net of tax, and net gain on sale or write-up of securities, net of tax:** |  |  |  |  |  |  |  |
| Return on average common equity (unadjusted) | 7.18% | 7.13% | 6.94% | 7.00% | 6.93% | 7.08% | 6.40% |
| Net income excluding merger related provision for credit losses, net of tax, merger related expenses, net of tax, FDIC special assessment, net of tax, and net gain on sale or write-up of securities, net of tax<sup>(X)</sup>: | $137605 | $135155 | $130225 | $130076 | $127155 | $402985 | $353906 |
| Average shareholders' equity | $7657978 | $7586290 | $7505801 | $7428665 | $7347265 | $7583914 | $7274009 |
| Return on average common equity excluding merger related provision for credit losses, net of tax, merger related expenses, net of tax, FDIC special assessment, net of tax, and net gain on sale or write-up of securities, net of tax <sup>(F) (X)</sup> | 7.19% | 7.13% | 6.94% | 7.00% | 6.92% | 7.08% | 6.49% |
| **Reconciliation of return on average common equity to return on average tangible common equity:** |  |  |  |  |  |  |  |
| Net income | $137556 | $135155 | $130225 | $130076 | $127282 | $402936 | $349310 |
| Average shareholders' equity | $7657978 | $7586290 | $7505801 | $7428665 | $7347265 | $7583914 | $7274009 |
| Less: Average goodwill and other intangible assets | (3560083) | (3563866) | (3567421) | (3573197) | (3576630) | (3563763) | (3526501) |
| &nbsp;&nbsp;&nbsp;&nbsp;Average tangible shareholders' equity | $4097895 | $4022424 | $3938380 | $3855468 | $3770635 | $4020151 | $3747508 |
| Return on average tangible common equity <sup>(F)</sup> | 13.43% | 13.44% | 13.23% | 13.50% | 13.50% | 13.36% | 12.43% |
| **Reconciliation of return on average common equity to return on average tangible common equity excluding merger related provision for credit losses, net of tax, merger related expenses, net of tax, and FDIC special assessment, net of tax:** |  |  |  |  |  |  |  |
| Net income excluding merger related provision for credit losses, net of tax, merger related expenses, net of tax, FDIC special assessment, net of tax, and net gain on sale or write-up of securities, net of tax<sup>(X)</sup>: | $137605 | $135155 | $130225 | $130076 | $127155 | $402985 | $353906 |
| Average shareholders' equity | $7657978 | $7586290 | $7505801 | $7428665 | $7347265 | $7583914 | $7274009 |
| Less: Average goodwill and other intangible assets | (3560083) | (3563866) | (3567421) | (3573197) | (3576630) | (3563763) | (3526501) |
| &nbsp;&nbsp;&nbsp;&nbsp;Average tangible shareholders' equity | $4097895 | $4022424 | $3938380 | $3855468 | $3770635 | $4020151 | $3747508 |
| Return on average tangible common equity excluding merger related provision for credit losses, net of tax, merger related expenses, net of tax, FDIC special assessment, net of tax, and net gain on sale or write-up of securities, net of tax <sup>(F) (X)</sup> | 13.43% | 13.44% | 13.23% | 13.50% | 13.49% | 13.37% | 12.59% |
| **Reconciliation of book value per share to tangible book value per share:** |  |  |  |  |  |  |  |
| Shareholders' equity | $7664938 | $7599736 | $7517061 | $7438495 | $7361249 | $7664938 | $7361249 |
| Less: Goodwill and other intangible assets | (3558321) | (3561923) | (3565533) | (3569176) | (3574566) | (3558321) | (3574566) |
| &nbsp;&nbsp;&nbsp;&nbsp;Tangible shareholders' equity | $4106617 | $4037813 | $3951528 | $3869319 | $3786683 | $4106617 | $3786683 |
| Period end shares outstanding | 94993 | 95277 | 95258 | 95275 | 95261 | 94993 | 95261 |
| Tangible book value per share | $43.23 | $42.38 | $41.48 | $40.61 | $39.75 | $43.23 | $39.75 |

---

------

---

| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Year-to-Date** | **Year-to-Date** |
|  | **Sep 30,<br>2025** | **Jun 30,<br>2025** | **Mar 31,<br>2025** | **Dec 31,<br>2024** | **Sep 30,<br>2024** | **Sep 30,<br>2025** | **Sep 30,<br>2024** |
| **Reconciliation of equity to assets ratio to period end tangible equity to period end tangible assets ratio:** |  |  |  |  |  |  |  |
| Tangible shareholders' equity | $4106617 | $4037813 | $3951528 | $3869319 | $3786683 | $4106617 | $3786683 |
| Total assets | $38330469 | $38417352 | $38764675 | $39566738 | $40115320 | $38330469 | $40115320 |
| Less: Goodwill and other intangible assets | (3558321) | (3561923) | (3565533) | (3569176) | (3574566) | (3558321) | (3574566) |
| &nbsp;&nbsp;&nbsp;&nbsp;Tangible assets | $34772148 | $34855429 | $35199142 | $35997562 | $36540754 | $34772148 | $36540754 |
| Period end tangible equity to period end tangible assets ratio | 11.81% | 11.58% | 11.23% | 10.75% | 10.36% | 11.81% | 10.36% |
| **Reconciliation of allowance for credit losses to total loans to allowance for credit losses on loans to total loans excluding Warehouse Purchase Program:** |  |  |  |  |  |  |  |
| Allowance for credit losses on loans | $339626 | $346084 | $349101 | $351805 | $354397 | $339626 | $354397 |
| Total loans | $22027769 | $22197388 | $21977570 | $22149209 | $22380852 | $22027769 | $22380852 |
| Less: Warehouse Purchase Program loans | (1278178) | (1287440) | (1057893) | (1080903) | (1228706) | (1278178) | (1228706) |
| &nbsp;&nbsp;&nbsp;&nbsp;Total loans less Warehouse Purchase Program | $20749591 | $20909948 | $20919677 | $21068306 | $21152146 | $20749591 | $21152146 |
| Allowance for credit losses on loans to total loans excluding Warehouse Purchase Program | 1.64% | 1.66% | 1.67% | 1.67% | 1.68% | 1.64% | 1.68% |
| **Reconciliation of efficiency ratio to efficiency ratio excluding net gains and losses on the sale, write-down or write-up of assets and securities:** |  |  |  |  |  |  |  |
| Noninterest expense | $138635 | $138565 | $140301 | $141545 | $140338 | $417501 | $429028 |
| Net interest income | $273435 | $267722 | $265382 | $267774 | $261691 | $806539 | $758721 |
| Noninterest income | 41238 | 42982 | 41301 | 39837 | 41099 | 125521 | 125972 |
| &nbsp;&nbsp;&nbsp;Less: net gain (loss) on sale or write-down of assets | 3 | 1414 | (235) | 584 | 3178 | 1182 | 2240 |
| &nbsp;&nbsp;&nbsp;Less: net gain on sale or write-up of securities |  |  |  |  | 224 |  | 11245 |
| Noninterest income excluding net gains and losses on the sale, write-down or write-up of assets and securities | 41235 | 41568 | 41536 | 39253 | 37697 | 124339 | 112487 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total income excluding net gains and losses on the sale, write-down or write-up of assets and securities | $314670 | $309290 | $306918 | $307027 | $299388 | $930878 | $871208 |
| Efficiency ratio, excluding net gains and losses on the sale, write-down or write-up of assets and securities | 44.06% | 44.80% | 45.71% | 46.10% | 46.87% | 44.85% | 49.25% |
| **Reconciliation of efficiency ratio to efficiency ratio, excluding net gains and losses on the sale, write-down or write-up of assets and securities, merger related expenses and FDIC special assessment:** |  |  |  |  |  |  |  |
| Noninterest expense | $138635 | $138565 | $140301 | $141545 | $140338 | $417501 | $429028 |
| &nbsp;&nbsp;&nbsp;Less: merger related expenses | 62 |  |  |  | 63 | 62 | 4444 |
| &nbsp;&nbsp;&nbsp;Less: FDIC special assessment |  |  |  |  |  |  | 3554 |
| Noninterest expense excluding merger related expenses and FDIC special assessment | $138573 | $138565 | $140301 | $141545 | $140275 | $417439 | $421030 |
| Net interest income | $273435 | $267722 | $265382 | $267774 | $261691 | $806539 | $758721 |
| Noninterest income | 41238 | 42982 | 41301 | 39837 | 41099 | 125521 | 125972 |
| &nbsp;&nbsp;&nbsp;Less: net gain (loss) on sale or write down of assets | 3 | 1414 | (235) | 584 | 3178 | 1182 | 2240 |
| &nbsp;&nbsp;&nbsp;Less: net gain on sale or write-up of securities |  |  |  |  | 224 |  | 11245 |
| Noninterest income excluding net gains and losses on the sale, write-down or write-up of assets and securities | 41235 | 41568 | 41536 | 39253 | 37697 | 124339 | 112487 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total income excluding net gains and losses on the sale, write-down or write-up of assets and securities | $314670 | $309290 | $306918 | $307027 | $299388 | $930878 | $871208 |
| Efficiency ratio, excluding net gains and losses on the sale, write-down or write-up of assets and securities, merger related expenses and FDIC special assessment | 44.04% | 44.80% | 45.71% | 46.10% | 46.85% | 44.84% | 48.33% |

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