---
schema_version: "secwatch.filing_event.v1"
accession: "0001564590-22-033861"
form_type: "8-K"
ticker: "PB"
cik: "0001068851"
company_name: "PROSPERITY BANCSHARES INC"
filed_at: "2022-10-11T23:59:59+00:00"
generated_at: "2026-06-23T04:15:05.371388+00:00"
event_type: "m_and_a"
sentiment: "positive"
materiality_score: 0.72
calibrated_materiality_score: 0.72
confidence: "high"
source: SEC EDGAR
---

# Prosperity Bancshares announces two Texas bank acquisitions valued at ~$570M combined

## Summary
- Acquires Lone Star State Bancshares for ~$228.7M (2.38M shares + $64.1M cash); $1.3B assets, $933.5M loans.
- Acquires First Bancshares of Texas for ~$341.6M (3.58M shares + $93.4M cash); $2.1B assets, $1.6B loans.
- Both acquisitions expected to close in Q1 2023, subject to regulatory and shareholder approvals.
- Alan Lackey (Lone Star CEO) to serve as West Texas Area President; Ken Burgess to serve as Regional President.

## SEC filing metadata
- accession: 0001564590-22-033861
- form_type: 8-K
- ticker: PB
- cik: 0001068851
- company_name: PROSPERITY BANCSHARES INC
- filed_at: 2022-10-11T23:59:59+00:00
- event_type: m_and_a
- sentiment: positive
- materiality_score: 0.72
- calibrated_materiality_score: 0.72
- confidence: high
- sec_items: 7.01, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1068851/000156459022033861/0001564590-22-033861-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1068851/000156459022033861/pb-8k_20221011.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001564590-22-033861
- JSON: https://secwatch.observer/filing/0001564590-22-033861.json
- Plain text: https://secwatch.observer/filing/0001564590-22-033861.txt

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