---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-24-039476"
form_type: "8-K"
ticker: "PB"
cik: "0001068851"
company_name: "PROSPERITY BANCSHARES INC"
filed_at: "2024-04-01T23:59:59+00:00"
generated_at: "2026-06-04T04:19:32.158586+00:00"
event_type: "m_and_a"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Prosperity Bancshares closes Lone Star State Bancshares merger for $64.1M cash + 2.38M shares

## Summary
- Merger effective April 1, 2024; 2,376,182 PB shares and ~$64.1 million cash paid for all LS Bancshares shares.
- Lone Star operated 5 banking centers in West Texas; integration to combine 288 PB branches by Oct 28, 2024.
- Lone Star CEO Alan Lackey named West Texas Area President; Melisa Roberts named West Texas Area VP.
- Lone Star locations to keep name until October 28, 2024 operational integration.

## SEC filing metadata
- accession: 0000950170-24-039476
- form_type: 8-K
- ticker: PB
- cik: 0001068851
- company_name: PROSPERITY BANCSHARES INC
- filed_at: 2024-04-01T23:59:59+00:00
- event_type: m_and_a
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1068851/000095017024039476/0000950170-24-039476-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1068851/000095017024039476/pb-20240401.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-24-039476
- JSON: https://secwatch.observer/filing/0000950170-24-039476.json
- Plain text: https://secwatch.observer/filing/0000950170-24-039476.txt

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