RBB Bancorp 公布2026年第三季度财报及每股0.16美元现金股息

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

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FORM 8-K

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CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): October 19, 2026

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RBB BANCORP

(Exact name of Registrant as Specified in Its Charter)

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Registrant’s Telephone Number, Including Area Code: (213) 627-9888

Not Applicable

(Former Name or Former Address, if Changed Since Last Report)

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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):

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

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 o

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. o

Item 2.02 Results of Operations and Financial Condition.

On October 19, 2026, RBB Bancorp (the “Company”) issued a press release setting forth the financial results for the quarter ended September 30, 2026, and information relating to the Company’s quarterly conference call and webcast. A copy of this press release is attached hereto as Exhibit 99.1 and is incorporated by reference herein.

The information furnished under Item 2.02 and Exhibit 99.1 of Item 9.01 of this Current Report on Form 8-K shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended (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 of 1933, as amended (the “Securities Act”), except as shall be expressly set for by specific reference in such filing.

Item 7.01 Regulation FD Disclosure.

On October 20, 2026, the Company will hold a conference call to discuss its financial results for the quarter ended September 30, 2026, and other matters relating to the Company. The Company has also made available on its website, www.royalbusinessbankusa.com, presentation materials containing certain historical and forward-looking information relating to the Company (the “Presentation Materials”). The Presentation Materials are furnished as Exhibit 99.2 hereto and are incorporated by reference herein. All information in Exhibit 99.2 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 and Item 9.01 of this Current Report on Form 8-K (including Exhibit 99.2) 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 8.01 Other Events.

On October 19, 2026, RBB Bancorp announced that its Board of Directors declared a cash dividend of $0.16 per share of its common stock, payable on November 12, 2026, to common shareholders of record as of October 30, 2026. A copy of the press release announcing the cash dividend described in this Item 8.01 is attached as Exhibit 99.1 hereto and incorporated by reference herein. The information contained in Exhibit 99.1 shall not be deemed “filed” for the purposes of Section 18 of the Exchange Act, or otherwise subject to the liabilities of such Section, nor shall such information and Exhibit be deemed incorporated by reference into any registration statement or other filings of the Company under the Securities Act, except as shall be expressly set forth by specific reference in such filing.

Item 9.01 Financial Statements and Exhibits.

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.