---
schema_version: "secwatch.filing_event.v1"
accession: "0001171843-23-007707"
form_type: "8-K"
ticker: "SFNC"
cik: "0000090498"
company_name: "SIMMONS FIRST NATIONAL CORP"
filed_at: "2023-12-26T23:59:59+00:00"
generated_at: "2026-06-07T07:40:58.559575+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.2
calibrated_materiality_score: 0.2
confidence: "high"
source: SEC EDGAR
---

# Simmons First National amends bylaws and code of ethics; governance updates

## Summary
- Board adopted amended bylaws clarifying ability to designate principal office, postpone shareholder meetings, and hold meetings via remote communication.
- Bylaws revised to give board flexibility on committee structure, removing specific committee descriptions and numerical limits on directors.
- Code of Ethics updated to clarify administrative body for executive officer matters and process to obtain waivers.
- Finance Code of Ethics amended to specify departments covered and waiver process.

## SEC filing metadata
- accession: 0001171843-23-007707
- form_type: 8-K
- ticker: SFNC
- cik: 0000090498
- company_name: SIMMONS FIRST NATIONAL CORP
- filed_at: 2023-12-26T23:59:59+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.2
- calibrated_materiality_score: 0.2
- confidence: high
- sec_items: 5.03, 5.05, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/90498/000117184323007707/0001171843-23-007707-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/90498/000117184323007707/f8k_122623.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001171843-23-007707
- JSON: https://secwatch.observer/filing/0001171843-23-007707.json
- Plain text: https://secwatch.observer/filing/0001171843-23-007707.txt

## Key facts
- Governance Changes
  SIMMONS FIRST NATIONAL CORP: The Company adopted amended and restated versions of its Code of Ethics and Finance Group Code of Ethics, effective December 19, 2023, clarifying waiver processes and making administrative revisions (effective 2023-12-19).
  - Change: code of ethics
  - Effective: 2023-12-19
  source text: On December 19, 2023, the Board adopted amended and restated versions of the Company’s Code of Ethics (“Code”) and the Company’s Finance Group Code of Ethics (“Finance Code”), both effective as of such date.
  evidence_url: https://www.sec.gov/Archives/edgar/data/90498/000117184323007707/0001171843-23-007707-index.htm
- Governance Changes
  SIMMONS FIRST NATIONAL CORP: The Company adopted amended and restated bylaws effective December 19, 2023, with changes including provisions for remote shareholder meetings, board committee flexibility, and other revisions (effective 2023-12-19).
  - Change: bylaw amendment
  - Effective: 2023-12-19
  source text: On December 19, 2023, the Board of Directors (the “Board”) of Simmons First National Corporation (the “Company”) adopted amended and restated bylaws of the Company (the “Amended and Restated Bylaws”), effective as of such date.
  evidence_url: https://www.sec.gov/Archives/edgar/data/90498/000117184323007707/0001171843-23-007707-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.