Traders should note that STEL is delisted effective immediately — no further trading in the security. Prosperity (PB) shares received by Stellar shareholders can be held or sold. Monitor Prosperity's next earnings for post-merger integration updates and potential accretion/dilution impact.
Price Chart
Executive Summary
Stellar Bancorp has completed its merger into Prosperity Bancshares as of July 1, 2026. Each Stellar share converted into 0.3803 Prosperity shares plus $11.36 cash. Stellar stock is delisted from the NYSE, all directors and officers have departed (two former directors joined Prosperity's board), and Stellar's governing documents were replaced by Prosperity's. A balance sheet repositioning was executed, involving the sale of approximately $466.4 million in securities. Shareholders received the merger consideration and no longer have rights in Stellar.
Key Facts
- Merger closed July 1, 2026: each Stellar share converted into 0.3803 Prosperity shares + $11.36 in cash.
- Stellar stock delisted from NYSE effective July 1, 2026; Form 15 deregistration to follow.
- All Stellar directors and officers ceased roles; Robert R. Franklin, Jr. and Joseph B. Swinbank joined Prosperity's board.
- Approximately $466.4 million in securities sold as part of a balance sheet repositioning at closing.
- Shareholders lost all rights in Stellar except to receive merger consideration.
Financial Impact
Stellar shareholders receive a fixed exchange ratio of 0.3803 Prosperity shares + $11.36 cash per Stellar share; the merger consideration value was based on Prosperity's trailing 10-day VWAP of $71.44 calculated pre-close. ~$466.4M securities sale executed.
Risk Factors
- Shareholder lawsuits challenging merger disclosures were disclosed in prior 425 filings — risk of additional litigation post-closing.
- Integration execution risk for Prosperity in absorbing Stellar's operations and balance sheet.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 4 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| 8-K Filing (Primary) | 0001193125-26-291511 |
| Document: 0001193125-26-291511-index-headers.html | 0001193125-26-291511 |
| Document: 0001193125-26-291511-index.html | 0001193125-26-291511 |
| Document: 0001193125-26-291511.txt | 0001193125-26-291511 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 8, 2026 18d ago | SC 13G/A | — | awaiting T+20 | — | — |
Jul 13, 2026 15w ago | 15-12G | — | awaiting T+20 | — | — |
Jul 1, 2026 16w ago | 25-NSE | $39.27 | awaiting T+20 | — | — |
Jul 1, 2026 16w ago | 8-K | $39.27 | awaiting T+20 | — | — |
May 20, 2026 22w ago | 425 | $37.41 $38.57 | ▲ +3.10% | ▲ +2.77% | — |
May 20, 2026 22w ago | 8-K | $37.41 $38.57 | ▲ +3.10% | ▲ +2.77% | — |
May 19, 2026 22w ago | DEFA14A | $37.42 $38.43 | ▲ +2.70% | ▲ +1.96% | — |
Apr 29, 2026 25w ago | 425 | $37.32 $37.49 | ▲ +0.46% | ▼ −5.59% | — |
Apr 28, 2026 25w ago | 8-K | $37.32 $37.32 | · 0.00% | ▼ −5.46% | — |
Apr 22, 2026 26w ago | 8-K | $37.70 $36.95 | ▼ −1.99% | ▼ −5.15% | — |
US Market Status
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