Exhibit 25.1

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM T-1

STATEMENT OF ELIGIBILITY UNDER

THE TRUST INDENTURE ACT OF 1939 OF A

CORPORATION DESIGNATED TO ACT AS TRUSTEE

☐ Check if an Application to Determine Eligibility of

a Trustee Pursuant to Section 305(b)(2)

UMB BANK, NATIONAL ASSOCIATION

(Exact name of Trustee as specified in its charter)

44-0201230

I.R.S. Employer Identification No.

1010 Grand Blvd. Kansas City, Missouri	64106
(Address of principal executive offices)	(Zip Code)

Mauri J. Cowen

UMB BANK, NATIONAL ASSOCIATION

5555 San Felipe, Suite 870

Houston, Texas  77056

(713) 300-0857

(Name, address and telephone number of agent for service)

RBB BANCORP

(Issuer with respect to the Securities)

California	27-2776416
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

1055 Wilshire Blvd., 12th Floor Los Angeles, CA	90017
(Address of Principal Executive Offices)	(Zip Code)

6.180% Fixed-to-Floating Rate Subordinated Notes due 2028

(Title of the Indenture Securities)

FORM T-1

Item 1.      GENERAL INFORMATION.  Furnish the following information as to the Trustee.

a)Name and address of each examining or supervising authority to which it is subject.

The Comptroller of the Currency

Mid-Western District
2345 Grand Avenue, Suite 700
Kansas City, Missouri 64108

Federal Reserve Bank of Kansas City
Federal Reserve P.O. Station
Kansas City, Missouri 64198

Supervising Examiner
Federal Deposit Insurance Corporation
720 Olive Street, Suite 2909
St. Louis, Missouri 63101

b)Whether it is authorized to exercise corporate trust powers.

Yes

Item 2.     AFFILIATIONS WITH OBLIGOR.  If the obligor is an affiliate of the Trustee, describe each such affiliation.

None

Items 3-15Items 3-15 are not applicable because, to the best of the Trustee’s knowledge, the obligor is not in default under any Indenture for which the Trustee acts as Trustee.

Item 16.     LIST OF EXHIBITS:  List below all exhibits filed as a part of this statement of eligibility and qualification.

1.A copy of the Articles of Association of the Trustee (Exhibit 1 to Form T-1 filed with Registration Statement No. 333-74008).

2.Certificate of Authority from the Comptroller of the Currency evidencing a change of the corporate title of the Association (Exhibit 2 to Form T-1 filed with Registration Statement No. 333-74008).

3.Certificate from the Comptroller of the Currency evidencing authority to exercise corporate trust powers and a letter evidencing a change of the corporate title of the Association (Exhibit 3 to Form T-1 filed with Registration Statement No. 333-74008).

4.Bylaws, as amended of the Trustee (Exhibit 4 to Form T-1 filed with Registration Statement No. 333-74008).

5.A copy of each Indenture referred to in Item 4.  Not applicable.

6.The consent of the Trustee required by Section 321(b) of the Act (Exhibit 6 to Registration Statement No. 333-74008).

7.Report of Condition of the Trustee as of September 30, 2018 published pursuant to law or the requirements of its supervising or examining authority, attached as Exhibit 7.

SIGNATURE

Pursuant to the requirements of the Trust Indenture Act of 1939, as amended, the Trustee, UMB BANK, NATIONAL ASSOCIATION, a national banking association organized and existing under the laws of the United States of America, has duly caused this statement of eligibility and qualification to be signed on its behalf by the undersigned, thereunto duly authorized, all in the city of Kansas City, State of Missouri on the 10th of January, 2019.

By:	/s/ Mauri J. Cowen
	Mauri J. Cowen
	Senior Vice President

Exhibit 7

Schedule RC from UMB September 30, 2018 Call Report