Kao Christina 4

What Happened

• Christina Kao, a director of RBB Bancorp (RBB), was granted 2,862 restricted stock units (RSUs) on May 21, 2026. Of those, 2,162 RSUs vested immediately and converted into 2,162 shares of common stock. Separately, 700 RSUs from a May 21, 2025 grant vested on May 21, 2026 and converted into 700 shares. All conversions/exercises were recorded at $0 per share (no cash paid).
• Net on that date, 2,862 RSU-derived common shares were converted/received. The new 2,862-RSU grant includes 700 RSUs that will vest on the one-year anniversary (May 21, 2027).

Key Details

• Transaction date: May 21, 2026. Filing date (Form 4): May 26, 2026.
• Prices: conversions/awards reported at $0 (typical for RSU vesting/conversion; no cash paid).
• Shares acquired via conversion on May 21, 2026: 2,162 (from new grant vesting) + 700 (from prior grant vesting) = 2,862 common shares.
• Award granted on May 21, 2026: 2,862 RSUs (2,162 vested immediately; 700 cliff-vest on May 21, 2027).
• Footnotes: F1 clarifies RSUs convert one-for-one into common stock. F2/F3 detail the May 21, 2025 and May 21, 2026 grants and vesting schedules.
• Shares owned after the transaction: not specified in the provided filing excerpt.
• Timeliness: The Form 4 was filed five days after the May 21 transactions. Form 4s are normally due within two business days; this filing appears to have been submitted after that window.

Context

• These entries reflect RSU awards and the automatic conversion/settlement of RSUs into common shares (derivative-to-stock conversion). Because no open‑market purchase or sale occurred, this is an award/vesting event rather than a sign of active buying or selling.
• Awards and vesting are common compensation events for insiders and do not by themselves indicate personal trading intent.