Duplantier Jon-Al 4

What Happened
Jon‑Al Duplantier, a director of Stellar Bancorp, reported a disposition of 10,508 shares of Stellar common stock on July 1, 2026. The Form 4 shows a disposition to the issuer (code D) with a $0.00 per‑share price because the shares were cancelled in connection with a merger. Under the merger terms, each STEL share was converted into 0.3803 shares of Prosperity Bancshares common stock and $11.36 in cash. For the 10,508 shares, that equals approximately 3,995.15 Prosperity shares plus $119,370.88 in cash.

Key Details

• Transaction date: 2026-07-01 (Effective Time of the merger).
• Reported Form 4 price: $0.00 per share (disposition to issuer); merger consideration: 0.3803 Prosperity shares + $11.36 cash per STEL share.
• Aggregate consideration received (approx.): $119,370.88 cash and ~3,995.15 Prosperity shares.
• Shares owned after the transaction: not specified in this Form 4.
• Footnote: Conversion and cash payment per the January 27, 2026 Merger Agreement between Stellar and Prosperity (see F1).
• Timeliness: Filing date and period of report are 2026-07-01; no late filing indicated.

Context
This was a corporate merger exchange (shares cancelled and converted into merger consideration), not an open‑market sale or purchase by the insider. Such dispositions reflect the merger terms rather than a discretionary insider trade and should be interpreted as a transaction resulting from the company combination rather than a standalone signal of insider sentiment.