RBB Bancorp (RBB) Chief Accounting Officer Diana Hanson Receives RSU Vesting

What Happened
Diana Hanson, Chief Accounting Officer of RBB Bancorp (RBB), had restricted stock units (RSUs) vest on 2026-08-19, which converted into 767 shares of common stock (exercise/conversion of a derivative). To satisfy tax withholding obligations, 276 of those shares were surrendered/withheld at $26.40 per share, generating $7,286 in withholding. The net shares remaining after withholding are not specified in the provided filing.

Key Details

• Transaction date: 2026-08-19; filing date: 2026-08-21 (filed timely).
• Vesting/conversion: 767 shares converted from RSUs at $0.00 per share (code M).
• Tax withholding/settlement: 276 shares withheld/disposed at $26.40 each, total $7,286 (code F).
• Footnotes: shares issued for vesting of the 8/19/2024 RSU grant; RSUs convert 1-for-1 into common stock. Remaining RSUs have scheduled vesting (two equal installments on 08/19/2027 and 08/19/2028 for one grant; another grant vests in four equal annual installments beginning 05/13/2027). No expiration date once RSUs vest.
• Filing timeliness: No late filing indicated.

Context
This was an RSU vesting event (award conversion) with a routine share withholding to cover tax obligations — common practice and not an open-market sale reflecting a trading decision. The filing shows conversion of derivative awards to shares and surrender of a portion to satisfy taxes (cashless/withholding settlement), not a purchase or discretionary sale.