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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT
Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
Date of Report (Date of earliest event reported): March 10, 2025 (March 10, 2025)

RBB BANCORP
(Exact name of Registrant as Specified in Its Charter)

California | 001-38149 | 27-2776416
(State or Other Jurisdiction of Incorporation) | (Commission File Number) | (IRS Employer Identification No.)
1055 Wilshire Blvd., 12th floor, Los Angeles, California |  | 90017
(Address of Principal Executive Offices) |  | (Zip Code)

Registrant’s Telephone Number, Including Area Code: (213) 627-9888
Not Applicable
(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instructions A.2. below):

☐ | Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ | Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ | Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ | Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12 (b) of the Act:

Title of each class |  | Trading Symbol(s) |  | Name of exchange on which registered
Common Stock, No Par Value |  | RBB |  | NASDAQ Global Select Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).
Emerging growth company ☐
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 7.01 Regulation FD Disclosure.
On March 10, 2025, Mr. David Morris (Chief Executive Officer), Mr. Johnny Lee (President) and Ms. Lynn Hopkins (Chief Financial Officer) of RBB Bancorp ("the Company"), will be participating in the Piper Sandler Western Bank Forum Conference in Marina del Rey, California, March 10-11, 2025. A copy of the investor presentation (“Presentation Materials”) being used for meetings with institutional investors will be available on the Company’s website, www.royalbusinessbankusa.com.
The Presentation Materials are furnished as Exhibit 99.1 hereto and are incorporated by reference herein. All information in Exhibit 99.1 is presented as of the particular date or dates referenced therein, and the Company does not undertake any obligation to, and disclaims any duty to, update any of the information provided.
The information furnished under Item 7.01 of this Current Report on Form 8-K (including Exhibit 99.1) shall not be deemed “filed” for purposes of Section 18 of the Exchange Act, or otherwise subject to the liabilities of such Section, nor shall such information be deemed incorporated by reference into any registration statement or other filings of the Company under the Securities Act, except as otherwise expressly stated in such filing.
Item 9.01 Financial Statements and Exhibits.

(d) |  | Exhibits.
99.1 |  | Presentation Materials
104 |  | Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

| RBB BANCORP (Registrant)
Date: March 10, 2025 | By: |  | /s/ Lynn Hopkins
|  |  | Lynn Hopkins
|  |  | Chief Financial Officer