secwatch.observer — SEC 8-K summary
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Issuer:     Stellar Bancorp, Inc. (STEL)
CIK:        0001473844
Form:       8-K
Filed at:   2026-07-01T11:30:06+00:00
Accession:  0001193125-26-291511
Event type: m_and_a
Sentiment:  neutral
Materiality: 1.00
Item codes: 2.01, 3.01, 3.03, 5.01, 5.02, 5.03, 8.01, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

Stellar Bancorp completes merger with Prosperity Bancshares; stock delisted
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- Merger closed July 1, 2026; each Stellar share converted to 0.3803 Prosperity shares plus $11.36 cash.
- Stellar directors and officers resigned; Robert R. Franklin, Jr. and Joseph B. Swinbank appointed to Prosperity board.
- Stellar sold approximately $466.4M of securities (agency MBS, CMBS, CMOs, municipals, corporate debt) as balance sheet repositioning.
- Stellar Common Stock delisted from NYSE; Prosperity intends to file Form 15 to deregister and suspend reporting.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1473844/000119312526291511/0001193125-26-291511-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/1473844/000119312526291511/d116708d8k.htm
  HTML page:      https://secwatch.observer/filing/0001193125-26-291511

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