---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-291486"
form_type: "8-K"
ticker: "PB"
cik: "0001068851"
company_name: "PROSPERITY BANCSHARES INC"
filed_at: "2026-07-01T11:15:06+00:00"
generated_at: "2026-07-01T11:20:37.107680+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 completes $590M cash-and-stock acquisition of Stellar Bancorp

## Summary
- Total consideration ~$590M cash + 19M PB shares; Stellar holders got 0.3803 PB shares + $11.36 cash per share.
- Robert R. Franklin Jr. appointed Vice Chairman of Prosperity and Prosperity Bank; receives $1.12M base salary, 175% target bonus, $3M signing bonus, 25,000 RSA shares.
- Stellar's 52 banking offices in Houston, Beaumont, East Texas, Dallas to operate under Stellar name until operational integration in March 2027.
- Prosperity assumed ~$2.17B in FHLB Dallas obligations from Stellar.

## SEC filing metadata
- accession: 0001193125-26-291486
- form_type: 8-K
- ticker: PB
- cik: 0001068851
- company_name: PROSPERITY BANCSHARES INC
- filed_at: 2026-07-01T11:15:06+00:00
- event_type: m_and_a
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 2.01, 2.03, 5.02, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1068851/000119312526291486/0001193125-26-291486-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1068851/000119312526291486/d109409d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-291486
- JSON: https://secwatch.observer/filing/0001193125-26-291486.json
- Plain text: https://secwatch.observer/filing/0001193125-26-291486.txt

## Key facts
- Executive change
  Joseph B. Swinbank was appointed as Director at PROSPERITY BANCSHARES INC.
  - Action: appointed
  - Role: Director
  source text: The two former directors of Stellar appointed by the Board, in each case effective as of the Effective Time, were Robert R. Franklin, Jr. and Joseph B. Swinbank.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1068851/000119312526291486/0001193125-26-291486-index.htm
- Executive change
  Robert R. Franklin, Jr. was appointed as Vice Chairman at PROSPERITY BANCSHARES INC.
  - Action: appointed
  - Role: Vice Chairman
  source text: Effective as of the Effective Time, Mr. Franklin was appointed to the position of Vice Chairman of Prosperity and Prosperity Bank.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1068851/000119312526291486/0001193125-26-291486-index.htm
- Executive change
  Robert R. Franklin, Jr. was appointed as Director at PROSPERITY BANCSHARES INC.
  - Action: appointed
  - Role: Director
  source text: The two former directors of Stellar appointed by the Board, in each case effective as of the Effective Time, were Robert R. Franklin, Jr. and Joseph B. Swinbank.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1068851/000119312526291486/0001193125-26-291486-index.htm

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