---
schema_version: "secwatch.filing_event.v1"
accession: "0000705432-25-000197"
form_type: "8-K"
ticker: "SBSI"
cik: "0000705432"
company_name: "SOUTHSIDE BANCSHARES INC"
filed_at: "2025-09-18T23:59:59+00:00"
generated_at: "2026-05-17T06:18:19.940355+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Southside Bancshares CEO Lee R. Gibson to retire Dec 31; President Keith Donahoe named successor

## Summary
- Lee R. Gibson will retire as CEO of Southside Bancshares and Southside Bank on Dec 31, 2025, but remain on both boards.
- Keith Donahoe, current President, appointed CEO and President effective Dec 31, 2025.
- Donahoe, 55, has over 30 years banking experience, joined Southside in 2021, previously at Frost Bank for 26 years.
- Gibson will receive standard non-employee director compensation after retirement (no prior separate board comp).

## SEC filing metadata
- accession: 0000705432-25-000197
- form_type: 8-K
- ticker: SBSI
- cik: 0000705432
- company_name: SOUTHSIDE BANCSHARES INC
- filed_at: 2025-09-18T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/705432/000070543225000197/0000705432-25-000197-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/705432/000070543225000197/sbsi-20250918.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000705432-25-000197
- JSON: https://secwatch.observer/filing/0000705432-25-000197.json
- Plain text: https://secwatch.observer/filing/0000705432-25-000197.txt

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