secwatch.observer — SEC 8-K summary
======================================

Issuer:     PROSPERITY BANCSHARES INC (PB)
CIK:        0001068851
Form:       8-K
Filed at:   2026-02-02T23:59:59+00:00
Accession:  0001193125-26-033776
Event type: m_and_a
Sentiment:  positive
Materiality: 0.75
Item codes: 8.01, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

Prosperity Bancshares closes acquisition of Southwest Bancshares, issues ~4.1M shares
--------------------------------------------------------------------------------

- Closed merger with Southwest Bancshares effective Feb 1, 2026; acquired Texas Partners Bank (11 offices in Central Texas).
- Issued 4,095,397 Prosperity common shares to Southwest shareholders and award holders.
- Brent Given named San Antonio Area Chairman; Tom Moreno to senior management; Gene Dawson Jr. joins Prosperity Bank board.
- Texas Partners banking offices to operate under current name until operational integration expected November 2026.
- Transaction adds presence in San Antonio, Austin, and Hill Country markets.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1068851/000119312526033776/0001193125-26-033776-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/1068851/000119312526033776/pb-20260202.htm
  HTML page:      https://secwatch.observer/filing/0001193125-26-033776

License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer