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USCB Financial Holdings, Inc. (USCB) is named as the issuer in a third Schedule 13G amendment reporting beneficial ownership of its Class A common stock. Endeavour Capital Advisors Inc. and Laurence M. Austin, Mitchell J. Katz and Jonah Marcus each reported 733,234 shares (4.0%); Endeavour Regional Bank Opportunities Fund II L.P. reported 607,495 shares (3.3%). The percentages are based on 18,386,126 Class A shares outstanding as of October 31, 2026.
Key Figures
Reported beneficial ownership—adviser and three individuals:733,234 sharesReported beneficial ownership—fund:607,495 sharesReported ownership percentage—adviser and three individuals:4.0%+2 more
5 metrics
Reported beneficial ownership—adviser and three individuals733,234 sharesEach reported 4.0% of the class.
Reported beneficial ownership—fund607,495 sharesEndeavour Regional Bank Opportunities Fund II L.P. reported 3.3% of the class.
Reported ownership percentage—adviser and three individuals4.0%Each reported 733,234 shares.
Reported ownership percentage—fund3.3%Endeavour Regional Bank Opportunities Fund II L.P. reported 607,495 shares.
Class A shares outstanding18,386,126 sharesAs of October 31, 2026; used as the basis for the reported ownership percentages.
"disclaim beneficial ownership in the shares reported herein"
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.
shared voting powerfinancial
"Shared Voting Power 733,234.00"
Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.
shared dispositive powerfinancial
"Shared Dispositive Power 733,234.00"
pecuniary interestfinancial
"except to the extent of their pecuniary interest therein"
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What USCB ownership amounts did the reporting persons disclose?
Endeavour Capital Advisors Inc. and Laurence M. Austin, Mitchell J. Katz and Jonah Marcus each reported 733,234 Class A shares (4.0%); Endeavour Regional Bank Opportunities Fund II L.P. reported 607,495 shares (3.3%).
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 3)
USCB Financial Holdings, Inc.
(Name of Issuer)
Class A Common Stock, $1.00 par value per share
(Title of Class of Securities)
90355N101
(CUSIP Number)
09/30/2026
(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
Rule 13d-1(b)
Rule 13d-1(c)
Rule 13d-1(d)
schemaVersion:
SCHEDULE 13G
CUSIP Number(s):
90355N101
1
Names of Reporting Persons
Endeavour Capital Advisors Inc.
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
733,234.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
733,234.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
733,234.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
4.0 %
12
Type of Reporting Person (See Instructions)
IA
SCHEDULE 13G
CUSIP Number(s):
90355N101
1
Names of Reporting Persons
Endeavour Regional Bank Opportunities Fund II L.P.
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
607,495.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
607,495.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
607,495.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
3.3 %
12
Type of Reporting Person (See Instructions)
PN
SCHEDULE 13G
CUSIP Number(s):
90355N101
1
Names of Reporting Persons
Laurence M. Austin
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
UNITED STATES
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
733,234.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
733,234.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
733,234.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
4.0 %
12
Type of Reporting Person (See Instructions)
IN, HC
SCHEDULE 13G
CUSIP Number(s):
90355N101
1
Names of Reporting Persons
Mitchell J. Katz
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
UNITED STATES
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
733,234.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
733,234.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
733,234.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
4.0 %
12
Type of Reporting Person (See Instructions)
IN, HC
SCHEDULE 13G
CUSIP Number(s):
90355N101
1
Names of Reporting Persons
Jonah Marcus
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
UNITED STATES
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
733,234.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
733,234.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
733,234.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
4.0 %
12
Type of Reporting Person (See Instructions)
IN, HC
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
USCB Financial Holdings, Inc.
(b)
Address of issuer's principal executive offices:
2301 N.W. 87th Avenue, Doral, FL 33172
Item 2.
(a)
Name of person filing:
This Schedule 13G is being jointly filed by each of the following persons pursuant to Rule 13d-1(k)(1) promulgated by the Securities and Exchange Commission pursuant to Section 13 of the Act, with respect to shares of Class A Common Stock, par value $1.00 per share (the "Class A Common Stock") of USCB Financial Holdings, Inc. (the "Issuer"): (i) Endeavour Capital Advisors Inc. ("Endeavour"), (ii) Endeavour Regional Bank Opportunities Fund II L.P. (the "Fund"), (iii) Laurence M. Austin, (iv) Mitchell J. Katz and (v) Jonah Marcus.
(b)
Address or principal business office or, if none, residence:
Endeavour Capital Advisors Inc.
410 Greenwich Avenue
Greenwich, CT 06830
(c)
Citizenship:
Endeavour is a Delaware corporation, the Fund is a Delaware limited partnership and Messrs. Austin, Katz and Marcus are citizens of the United States of America.
(d)
Title of class of securities:
Class A Common Stock, $1.00 par value per share
(e)
CUSIP No.:
90355N101
Item 3.
If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)
Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)
Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)
Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)
Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)
An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)
An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)
A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)
A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)
A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)
A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
please specify the type of institution:
(k)
Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.
Ownership
(a)
Amount beneficially owned:
The information in items 5 through 9 on the cover pages of this Schedule 13G is hereby incorporated by reference. The ownership percentages are based on 18,386,126 shares of Class A Common Stock outstanding as of October 31, 2026, as reported in the Issuer's Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on November 6, 2026.
(b)
Percent of class:
The information in item 11 of the cover pages of this Schedule 13G is hereby incorporated by reference.
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
The information in item 5 of the cover pages of this Schedule 13G is hereby incorporated by reference.
(ii) Shared power to vote or to direct the vote:
The information in item 6 of the cover pages of this Schedule 13G is hereby incorporated by reference.
(iii) Sole power to dispose or to direct the disposition of:
The information in item 7 of the cover pages of this Schedule 13G is hereby incorporated by reference.
(iv) Shared power to dispose or to direct the disposition of:
The information in item 8 of the cover pages of this Schedule 13G is hereby incorporated by reference.
Item 5.
Ownership of 5 Percent or Less of a Class.
Ownership of 5 percent or less of a class
Item 6.
Ownership of more than 5 Percent on Behalf of Another Person.
Not Applicable
Item 7.
Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
Not Applicable
Item 8.
Identification and Classification of Members of the Group.
Not Applicable
Item 9.
Notice of Dissolution of Group.
Not Applicable
Item 10.
Certifications:
By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
Endeavour Capital Advisors Inc.
Signature:
/s/ Glenn Hofsess*
Name/Title:
Glenn Hofsess, Chief Financial Officer
Date:
11/13/2026
Endeavour Regional Bank Opportunities Fund II L.P.
Signature:
/s/ Glenn Hofsess*
Name/Title:
By: Endeavour Capital Advisors Inc., its investment adviser By: Glenn Hofsess, Chief Financial Officer
Date:
11/13/2026
Laurence M. Austin
Signature:
/s/ Laurence M. Austin*
Name/Title:
Laurence M. Austin
Date:
11/13/2026
Mitchell J. Katz
Signature:
/s/ Mitchell J. Katz*
Name/Title:
Mitchell J. Katz
Date:
11/13/2026
Jonah Marcus
Signature:
/s/ Jonah Marcus*
Name/Title:
Jonah Marcus
Date:
11/13/2026
Comments accompanying signature: *The Reporting Persons disclaim beneficial ownership in the shares reported herein except to the extent of their pecuniary interest therein, and this report shall not otherwise be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 13(d) or Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purposes.
