# EDGAR Filing Document

**Accession Number:** 0000090498
**File Stem:** 0001193125-26-088388
**Filing Date:** 2026-3
**Character Count:** 8949
**Document Hash:** a08aca3e39dcfae5fa8e1b317404eb24
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-088388.hdr.sgml**: 20260303

**ACCESSION NUMBER**: 0001193125-26-088388

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 13

**CONFORMED PERIOD OF REPORT**: 20260227

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

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20260303

**DATE AS OF CHANGE**: 20260303

**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:** 26715117

**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) February 27, 2026

## 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. ☐

------

#### Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.
On February 27, 2026, Simmons First National Corporation ("Corporation"), Simmons Bank ("Bank"), and James M. Brogdon entered into a First Amendment to Executive Change in Control Severance Agreement ("Amendment"). The Amendment amends the Executive Change in Control Severance Agreement dated July 30, 2021, among the Corporation, the Bank, and Mr. Brogdon ("Agreement") by changing the formula for "termination compensation" under the Agreement from two (2) times Mr. Brogdon's Base Period Income (as defined in the Agreement) to three (3) times Mr. Brogdon's Base Period Income.

The foregoing description of the Amendment does not purport to be complete and is qualified in its entirety by reference to the complete text of the Amendment, which is attached as Exhibit 10.1 to this Current Report on Form 8-K, and incorporated by reference herein.

#### Item 9.01 Financial Statements and Exhibits.

---

| | |
|:---|:---|
| Exhibit No. | Description |
| 10.1 | [First Amendment to Executive Change in Control Severance Agreement for James M. Brogdon dated February 27, 2026.](d89479dex101.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: March 3, 2026 | C. Daniel Hobbs, Executive Vice President and Chief Financial Officer |

---

## Exhibit 10.1

**Exhibit 10.1** 

**FIRST AMENDMENT TO EXECUTIVE** 

**CHANGE IN CONTROL SEVERANCE AGREEMENT** 

**THIS FIRST AMENDMENT TO EXECUTIVE CHANGE IN CONTROL SEVERANCE AGREEMENT** ("**Amendment**") is made and entered into as of February 27, 2026 (the "**Effective Date**"), by and among Simmons First National Corporation ("**Company**"), an Arkansas corporation, Simmons Bank ("**Bank**" and together with the Company (as more fully described in Article 12 of the Executive Change in Control Severance Agreement), "**Simmons**"), an Arkansas state bank and James M. Brogdon ("**Executive**").

**R E C I T A L S:** 

**WHEREAS**, Simmons and the Executive executed the Executive Change in Control Severance Agreement ("**Agreement**"), effective July 30, 2021;

**WHEREAS**, the Agreement provides that if a Change in Control occurs during an Agreement Term, subject to the terms and conditions of the Agreement, the Executive is entitled to Termination Compensation equal to two (2) times the Executive's Base Period Income;

**WHEREAS**, effective January 1, 2026, the Executive assumed the additional role of Chief Executive Officer and joined the Company's board of directors ("**Company Board**"); and

**WHEREAS**, on January 28, 2026, in recognition of the Executive assuming the additional role of Chief Executive Officer, the Company Board approved amending the Agreement such that if a Change in Control occurs during an Agreement Term, subject to the terms and conditions of the Agreement, the Executive shall be entitled to Termination Compensation equal to three (3) times the Executive's Base Period Income;

**NOW, THEREFORE**, in consideration of the mutual covenants and obligations herein and in the Agreement, and the compensation Simmons agrees herein to pay the Executive, and of other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, Simmons and the Executive agree to amend the Agreement as follows:

**AMENDMENT** 

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**A.** Paragraph 2.5 of the Agreement is hereby deleted in its entirety and replaced with the following:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**2.5 Termination Compensation**. Termination Compensation equal to three (3) times the Executive's Base Period Income shall be paid to the Executive in a single sum payment in cash on the thirtieth (30<sup>th</sup>) business day after the later of (a) the Control Change Date and (b) the date of the Executive's employment termination; provided that if at the time of the Executive's termination of employment the Executive is a Specified Employee, then payments of the Termination Compensation to the Executive shall be made on the first day of the seventh (7<sup>th</sup>) month following the Executive's employment termination.

------

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**B.** Except as specifically amended herein, all other terms, conditions, and provisions of the Agreement remain in full force and effect.

IN WITNESS WHEREOF, the parties have executed this Agreement as of the day and year first above written.

---

| | | |
|:---|:---|:---|
| **EXECUTIVE:** | | |
|  | /s/ James M. Brogdon | /s/ James M. Brogdon |
|  | James M. Brogdon | James M. Brogdon |
| **COMPANY:** | **SIMMONS FIRST NATIONAL CORPORATION** | **SIMMONS FIRST NATIONAL CORPORATION** |
|  | By: | /s/ Jena Compton |
|  | Title: | EVP Chief People Officer |
| **BANK:** | **SIMMONS BANK** | **SIMMONS BANK** |
|  | By: | /s/ Jena Compton |
|  | Title: | EVP Chief People Officer |

---