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[Form 4] RBB Bancorp Insider Trading Activity

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

RBB Bancorp’s EVP and Chief Risk Officer Rizkalla Mina S. reported current equity holdings without any recorded buys or sells. The filing shows direct ownership of 1,447 shares of common stock and several blocks of restricted stock units (RSUs) that convert into common shares over time.

One RSU grant covers 3,873 underlying common shares, vesting in two equal annual installments on May 8, 2027 and May 8, 2028. Another covers 1,563 underlying shares, vesting in three equal annual installments beginning on May 8, 2027, 2028, and 2029. A further RSU grant of 3,475 underlying shares vests in three equal annual installments beginning one year after the May 13, 2026 grant date. The filing also clarifies that RSU grants will be settled in common stock and that vested RSUs will have no expiration date.

Positive

  • None.

Negative

  • None.
Insider Rizkalla Mina S.
Role EVP/Chief Risk Officer
Type Security Shares Price Value
holding Restricted Stock Units -- -- --
holding Restricted Stock Units -- -- --
holding Restricted Stock Units -- -- --
holding Common Stock, No Par Value -- -- --
Holdings After Transaction: Restricted Stock Units — 3,475 shares (Direct, null); Common Stock, No Par Value — 1,447 shares (Direct, null)
Footnotes (1)
  1. These remaining restricted stock units vest in two equal annual installments on 05/08/2027 and 05/08/2028. There will be no expiration date once restricted stock units vest. These remaining restricted stock units vest in three equal annual installments beginning on 05/08/2027, 05/08/2028 and 05/08/2029. The Form 4 has also been amended to clarify that grants of RSUs will be settled in common stock. These restricted stock units vest in three equal annual installments beginning one year after the 05/13/2026 date of grant.
Form 4 Insider Transactions: What Each Field Means →
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Rizkalla Mina S.
(Last)(First)(Middle)
1055 WILSHIRE BLVD
SUITE 1200
(Street)
LOS ANGELES CALIFORNIA 90017
(City)(State)(Zip)
UNITED STATES
(Country)		2. Issuer Name and Ticker or Trading Symbol
RBB Bancorp [ RBB ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
EVP/Chief Risk Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/13/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock, No Par Value1,447D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Restricted Stock Units$0.0000 (1) (2)Common Stock(4)3,4753,475D
Restricted Stock Units$0.0000 (3) (2)Common Stock(4)1,5631,563D
Restricted Stock Units$0.0000 (5) (2)Common Stock3,8733,873D
Explanation of Responses:
1. These remaining restricted stock units vest in two equal annual installments on 05/08/2027 and 05/08/2028.
2. There will be no expiration date once restricted stock units vest.
3. These remaining restricted stock units vest in three equal annual installments beginning on 05/08/2027, 05/08/2028 and 05/08/2029.
4. The Form 4 has also been amended to clarify that grants of RSUs will be settled in common stock.
5. These restricted stock units vest in three equal annual installments beginning one year after the 05/13/2026 date of grant.
Remarks:
Restricted Stock Units (RSUs) were granted on May 13, 2026.
/s/ Mina Rizkalla05/15/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR