# EDGAR Filing Document

**Accession Number:** 0000090498
**File Stem:** 0001193125-25-172179
**Filing Date:** 2025-8
**Character Count:** 11058
**Document Hash:** 42f18ce9ca967f3aa2b66ba571bf4acb
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-172179.hdr.sgml**: 20250804

**ACCESSION NUMBER**: 0001193125-25-172179

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 14

**CONFORMED PERIOD OF REPORT**: 20250804

**ITEM INFORMATION**: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

**ITEM INFORMATION**: Regulation FD Disclosure

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20250804

**DATE AS OF CHANGE**: 20250804

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** SIMMONS FIRST NATIONAL CORP
- **CENTRAL INDEX KEY:** 0000090498
- **STANDARD INDUSTRIAL CLASSIFICATION:** NATIONAL COMMERCIAL BANKS [6021]
- **ORGANIZATION NAME:** 02 Finance
- **EIN:** 710407808
- **STATE OF INCORPORATION:** AR
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-06253
- **FILM NUMBER:** 251178051

**BUSINESS ADDRESS:**
- **STREET 1:** 501 MAIN STREET
- **CITY:** PINE BLUFF
- **STATE:** AR
- **ZIP:** 71601
- **BUSINESS PHONE:** 8705411000

**MAIL ADDRESS:**
- **STREET 1:** 501 MAIN STREET
- **CITY:** PINE BLUFF
- **STATE:** AR
- **ZIP:** 71601

?xml version='1.0' encoding='ASCII'? 8-K

### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549

### FORM 8-K

#### CURRENT REPORT

#### Pursuant to Section 13 or 15(d)

#### of the Securities Exchange Act of 1934

#### Date of Report (Date of earliest event reported) August 4, 2025

## SIMMONS FIRST NATIONAL CORPORATION

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

---

| | | |
|:---|:---|:---|
| **Arkansas** | **0-6253** | **71-0407808** |
| **(State or other jurisdiction<br>of incorporation)** | **(Commission**<br> **File Number)** | **(I.R.S. Employer<br>Identification No.)** |

---

---

| | |
|:---|:---|
| **501 Main Street, Pine Bluff, Arkansas** | **71601** |
| **(Address of principal executive offices)** | **(Zip Code)** |

---

(870) 541-1000

#### (Registrant's telephone number, including area code)

#### Not Applicable

#### (Former name or former address, if changed since last report.)
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:

---

| | | |
|:---|:---|:---|
| **Title of each class** | **Trading<br>Symbol(s)** | **Name of each exchange<br>on which registered** |
| Common stock, par value $0.01 per share | SFNC | The Nasdaq Global Select Market |

---

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 5.02** | **Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.**  |

---

*George A. Makris, Jr.* 

On July 30, 2025, George A. Makris, Jr. (age 69) notified Simmons First National Corporation ("Company") that he has decided to retire from his positions as chairman of the board, director, and chief executive officer of the Company and its subsidiary bank, Simmons Bank ("Bank"), effective as of the end of the day December 31, 2025.

*James "Jay" M. Brogdon* 

Mr. Brogdon does not have any family relationships with any of the Company's directors or executive officers. From time to time, deposit arrangements, wealth management arrangements, and/or loans and extensions of credit have been made by the Bank and Mr. Brogdon in the ordinary course of business on substantially the same terms (including interest rates and collateral) as those prevailing at the time for comparable transactions with other persons not related to the Bank and that did not involve more than the normal risk of collectability or present other unfavorable features.

The information for Mr. Brogdon, in connection with his new role, required by Item 5.02(c)(3) of Form 8-K is unavailable as of the time of this filing. Mr. Brogdon will not receive separate compensation for his service as a director and will not immediately serve on any Board committees.

---

| | |
|:---|:---|
| **Item 7.01** | **Regulation FD Disclosure.**  |

---

On July 30, 2025, the Board elected Marty D. Casteel as its chairman, effective January 1, 2026, to succeed Mr. Makris, Jr. following his retirement. Additional information regarding Mr. Casteel's background and experience is provided in the 2025 Proxy Statement.

On August 4, 2025, the Company issued a press release announcing the changes to its leadership. A copy of the press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

The information provided pursuant to this Item 7.01 (including Exhibit 99.1) is being furnished and shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934 (the "Exchange Act") or otherwise subject to the liabilities under that Section and shall not be deemed to be incorporated by reference into any filing of the Company under the Securities Act of 1933 or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

---

| | |
|:---|:---|
| **Item 9.01** | **Financial Statements and Exhibits.**  |

---

---

| | |
|:---|:---|
| **Exhibit<br>No.** | **Description** |
| 99.1 | [Press Release issued by Simmons First National Corporation on August 4, 2025.](d934626dex991.htm) |
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL document). |

---

------

#### SIGNATURE
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.

---

| | |
|:---|:---|
|  | **SIMMONS FIRST NATIONAL CORPORATION** |
|  | /s/ C. Daniel Hobbs |
| Date: August 4, 2025 | C. Daniel Hobbs, Executive Vice President and Chief Financial Officer |

---

## Exhibit 99.1

**Exhibit 99.1**![LOGO](g934626g0801223728294.jpg)

August 4, 2025

**Simmons First National Corporation Announces CEO Retirement** 

**and Leadership Transition** 

(Pine Bluff, Ark.) **Simmons First National Corporation (NASDAQ: SFNC)** (Simmons or Company) today announced that George Makris, Jr. has decided to retire as Chairman and CEO of the Company and Simmons Bank at the end of 2025. Jay Brogdon, who currently serves as President of the Company and Simmons Bank, will assume the additional role of CEO and join the boards of directors effective January 1, 2026. Marty Casteel, former Chairman, CEO, and President of Simmons Bank and a current director of the Company and Simmons Bank, will become Chairman of both entities effective January 1, 2026.

"We are very thankful to George for his decade-plus tenure as CEO, overseeing the Company's geographic transformation that led to a period of unprecedented growth, often during complex and challenging environments," said Steve Cosse, lead independent director of Simmons First National Corporation. "Under George's leadership, the Board has taken a deliberate and measured approach to succession planning. As a result, Simmons has developed a talented executive leadership team with a long runway."

"It has been a privilege to serve as Chairman and CEO of Simmons, and I am grateful for the support of the Board and all our associates," said Makris. "Together, we have worked to build a regional bank people value and trust, and I am incredibly proud of what we have accomplished. The Board and I are confident the time is right for this transition, and Jay is well-prepared to succeed in his new role. Marty has been a trusted colleague for many years and is eminently qualified to serve as independent Chairman. I look forward to seeing continued progress toward building shareholder value through the achievement of our ambitious strategic objectives."

Brogdon has served as President since January 2023, overseeing all revenue lines, finance, operations, information technology and corporate strategy. Prior to joining Simmons in 2021 as Chief Financial Officer, Brogdon worked at Stephens Inc. for over 13 years where he served as managing director in the investment banking division. Prior to Stephens, he served four years at Deloitte.

"I am honored to lead Simmons and humbled to follow in the footsteps of George, Tommy May and the many incredible leaders who came before me," said Brogdon. "One of those leaders is Marty, who is well-respected throughout our industry. I look forward to working with him given the wealth of knowledge and expertise he brings from his 30-plus year career in banking.

"Simmons is committed to building value for our customers, communities, and shareholders, and our team does this with great integrity and passion. We will continue to build upon our longstanding culture and are excited about the opportunities ahead."

------

**Simmons First National Corporation** 

Simmons First National Corporation (NASDAQ: SFNC) is a Mid-South based financial holding company that has paid cash dividends to its shareholders for 116 consecutive years. Its principal subsidiary, Simmons Bank, operates more than 220 branches in Arkansas, Kansas, Missouri, Oklahoma, Tennessee and Texas. Founded in 1903, Simmons Bank offers comprehensive financial solutions delivered with a client-centric approach. Recently, Simmons Bank was recognized by *Newsweek* as one of America's Greatest Workplaces 2025 in Arkansas. In 2024, Simmons Bank was recognized by Newsweek as one of America's Best Regional Banks 2025, by U.S. News & World Report as one of the 2024-2025 Best Companies to Work For in the South and by Forbes as one of America's Best-In-State Banks 2024 in Tennessee and America's Best-In-State Employers 2024 in Missouri. Additional information about Simmons Bank can be found on our website at simmonsbank.com, by following @Simmons_Bank on X (formerly Twitter) or by visiting our newsroom.

**Investor and Media Contact** 

Ed Bilek, EVP, Director of Investor and Media Relations

ed.bilek@simmonsbank.com

205.612.3378 (cell)