RBB Bancorp
US ˙ NasdaqGS ˙ US74930B1052

SecurityRBB / RBB Bancorp
InstitutionState Street Corp
Latest Disclosed Ownership324,822 shares
Latest Disclosed Value $ 6,941,446
State Street Corp reports 1.28% increase in ownership of RBB / RBB Bancorp

On May 15, 2026 - State Street Corp filed a 13F-HR form disclosing ownership of 324,822 shares of RBB Bancorp (US:RBB) valued at $6,941,446 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 320,706 shares of RBB Bancorp. This represents a change in shares of 1.28% during the quarter. The current value of the position is $7,639,813 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F RBB BANCORP COM 74930B105 324,822 4,116 1.28 6,941 4.86 0.0002
2026-02-13 2025-12-31 13F RBB BANCORP COM 74930B105 320,706 1,550 0.49 6,619 10.56 0.0002
2025-11-14 2025-09-30 13F RBB BANCORP COM 74930B105 319,156 7,517 2.41 5,987 11.64 0.0002
2025-08-14 2025-06-30 13F RBB BANCORP COM 74930B105 311,639 -2,000 -0.64 5,363 3.63 0.0002
2025-05-15 2025-03-31 13F RBB BANCORP COM 74930B105 313,639 -2,385 -0.75 5,175 -20.08 0.0002
2025-02-14 2024-12-31 13F RBB BANCORP COM 74930B105 316,024 -7,703 -2.38 6,475 -13.11 0.0003
2024-11-14 2024-09-30 13F RBB BANCORP COM 74930B105 323,727 11,809 3.79 7,452 27.02 0.0003
2024-08-14 2024-06-30 13F RBB BANCORP COM 74930B105 311,918 3,552 1.15 5,867 5.65 0.0003
2024-05-15 2024-03-31 13F RBB BANCORP COM 74930B105 308,366 9,872 3.31 5,554 -2.29 0.0002
2024-02-14 2023-12-31 13F RBB BANCORP COM 74930B105 298,494 -34,418 -10.34 5,683 33.59 0.0003
2023-11-14 2023-09-30 13F RBB BANCORP COM 74930B105 332,912 507 0.15 4,255 7.21 0.0002
2023-08-14 2023-06-30 13F RBB BANCORP COM 74930B105 332,405 11,563 3.60 3,969 -20.21 0.0002
2023-05-15 2023-03-31 13F RBB BANCORP COM 74930B105 320,842 18,733 6.20 4,973 -21.04 0.0003
2023-05-15 2022-12-31 13F/A-99 RBB BANCORP COM 74930B105 302,109 16,410 5.74 6,299 6.08 0.0004
2023-05-15 2022-12-31 13F RBB BANCORP COM 74930B105 302,109 16,410 6,299 0.0004
2022-11-15 2022-09-30 13F RBB BANCORP COM 74930B105 285,699 1,442 0.51 5,937 1.04 0.0004
2022-08-15 2022-06-30 13F RBB BANCORP COM 74930B105 284,257 7,362 2.66 5,876 -9.66 0.0004
2022-05-16 2022-03-31 13F RBB BANCORP COM 74930B105 276,895 15,348 5.87 6,504 -5.09 0.0003
2022-02-14 2021-12-31 13F RBB BANCORP COM 74930B105 261,547 8,394 3.32 6,853 7.38 0.0003
2021-11-15 2021-09-30 13F RBB BANCORP COM 74930B105 253,153 -1,454 -0.57 6,382 3.49 0.0003
2021-08-16 2021-06-30 13F RBB BANCORP COM 74930B105 254,607 4,492 1.80 6,167 21.64 0.0003
2021-07-09 2021-03-31 13F/A-1 RBB BANCORP COM 74930B105 250,115 -26,356 -9.53 5,070 19.24 0.0003
2021-05-17 2021-03-31 13F RBB BANCORP COM 74930B105 250,115 -26,356 5,070 0.0003
2021-02-16 2020-12-31 13F RBB BANCORP COM 74930B105 276,471 14,072 5.36 4,252 42.88 0.0003
2020-11-10 2020-09-30 13F RBB BANCORP COM 74930B105 262,399 -27,550 -9.50 2,976 -24.81 0.0002
2020-08-14 2020-06-30 13F RBB BANCORP COM 74930B105 289,949 1,256 0.44 3,958 -0.08 0.0003
2020-06-19 2020-03-31 13F/A-1 RBB BANCORP COM 74930B105 288,693 -10,702 -3.57 3,961 -37.50 0.0003
2020-05-11 2020-03-31 13F RBB BANCORP COM 74930B105 288,693 -10,702 3,961 347.8556
2020-02-06 2019-12-31 13F RBB BANCORP COM 74930B105 299,395 21,442 7.71 6,338 15.80 0.0004
2019-11-14 2019-09-30 13F RBB BANCORP COM 74930B105 277,953 11,208 4.20 5,473 6.09 0.0004
2019-08-14 2019-06-30 13F RBB BANCORP COM 74930B105 266,745 31,335 13.31 5,159 16.56 0.0004
2019-05-15 2019-03-31 13F RBB BANCORP COM 74930B105 235,410 9,127 4.03 4,426 11.32 0.0003
2019-02-12 2018-12-31 13F RBB BANCORP COM 74930B105 226,283 -3,417 -1.49 3,976 -29.38 0.0004
2018-11-09 2018-09-30 13F RBB BANCORP Common equity shares 74930B105 229,700 31,923 16.14 5,630 -11.38 0.0004
2018-08-14 2018-06-30 13F RBB BANCORP Common equity shares 74930B105 197,777 69,546 54.23 6,353 87.85 0.0005
2018-05-15 2018-03-31 13F RBB BANCORP Common equity shares 74930B105 128,231 78,203 156.32 3,382 147.04 0.0003
2018-02-14 2017-12-31 13F RBB BANCORP Common equity shares 74930B105 50,028 30,804 160.24 1,369 211.14 0.0001
2017-11-14 2017-09-30 13F RBB BANCORP Common equity shares 74930B105 19,224 19,224 440 0.0000
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.