Diana Hanson - 19 Aug 2026 Form 4 Insider Report for RBB Bancorp (RBB)

Reporting relationship: Chief Accounting Officer
Issuer ticker: RBB
Reported as of: 19 Aug 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 21 Aug 2026, 17:47:18 UTC
Prior SEC filing: 15 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Diana Hanson

Key filing fact

Diana Hanson filed Form 4 for RBB Bancorp (RBB) on 21 Aug 2026.

Key facts

This page summarizes Diana Hanson's Form 4 filing for RBB Bancorp (RBB).
3 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 21 Aug 2026, 17:47.

Change

Previous filing in this sequence was filed on 15 May 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001794553 Primary reporting owner

Hanson Diana

Relationship: Chief Accounting Officer
Address: 1055 WILSHIRE BLVD, SUITE 1200, LOS ANGELES
Signature: /s/ Diana Hanson
Signature date: 21 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

RBB transaction

Common Stock, No Par Value

Options Exercise

Transaction value
Shares: +767
Change %: +156%
Price: $0.000000^*
Shares after: 1,259
Date: 19 Aug 2026
Ownership: Direct

RBB transaction

Common Stock, No Par Value

Tax liability

Transaction value
Shares: -276
Change %: -22%
Price: $26.40^*
Shares after: 983
Date: 19 Aug 2026
Ownership: Direct

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

RBB transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -767
Change %: -33%
Price: $0.000000^*
Shares after: 1,533
Date: 19 Aug 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 2,300
Exercise price
Footnotes: F1, F2, F4

RBB holding Derivative

Restricted Stock Units

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 1,255
Date: 19 Aug 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,255
Exercise price
Footnotes: F1, F3, F4

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote F1

There will be no expiration date once restricted stock units vest.

Footnote F2

These remaining restricted stock units vest in two equal annual installments on 08/19/2027 and 08/19/2028.

Footnote F3

These restricted stock units vest in four equal annual installments beginning one year after the 05/13/2026 date of grant.

Footnote F4

Restricted stock units convert into common stock on a one-for-one basis.

SEC remarks

Shares issued for vesting of 8/19/2024 RSU grant and shares disposed in settlement of tax withholding obligations for such RSU vesting.