---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-168540"
form_type: "8-K"
ticker: "PB"
cik: "0001068851"
company_name: "PROSPERITY BANCSHARES INC"
filed_at: "2026-04-22T23:59:59+00:00"
generated_at: "2026-05-15T04:49:04.472995+00:00"
event_type: "m_and_a"
sentiment: "positive"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Prosperity gets all regulatory approvals for Stellar acquisition; closing expected July 1, 2026

## Summary
- Received all regulatory approvals: FRB Dallas waiver, FDIC, Texas Dept. of Banking.
- Stellar shareholder meeting scheduled for May 27, 2026, to vote on merger.
- Merger expected to close on or about July 1, 2026, subject to shareholder approval and other conditions.
- Prosperity's S-4 registration statement declared effective April 21; proxy mailed April 23, 2026.

## SEC filing metadata
- accession: 0001193125-26-168540
- form_type: 8-K
- ticker: PB
- cik: 0001068851
- company_name: PROSPERITY BANCSHARES INC
- filed_at: 2026-04-22T23:59:59+00:00
- event_type: m_and_a
- sentiment: positive
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1068851/000119312526168540/0001193125-26-168540-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1068851/000119312526168540/pb-20260422.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-168540
- JSON: https://secwatch.observer/filing/0001193125-26-168540.json
- Plain text: https://secwatch.observer/filing/0001193125-26-168540.txt

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