United Security Bancshares
DETTE SYMBOL ER IKKE LÆNGERE AKTIVT

SecurityUBFO / United Security Bancshares
InstitutionVanguard Group Inc
Latest Disclosed Ownership756,245 shares
Latest Disclosed Value $ 7,615,387
Vanguard Group Inc reports 0.40% increase in ownership of UBFO / United Security Bancshares

On January 29, 2026 - Vanguard Group Inc filed a 13F-HR form disclosing ownership of 756,245 shares of United Security Bancshares (US:UBFO) valued at $7,615,387 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 7, 2025 disclosing 753,228 shares of United Security Bancshares. This represents a change in shares of 0.40% during the quarter. The current value of the position is $7,948,135 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)
2026-01-29 2025-12-31 13F UNITED SEC BANCSHARES CALIF COM 911460103 756,245 3,017 0.40 7,615 8.37 0.0001
2025-11-07 2025-09-30 13F UNITED SEC BANCSHARES CALIF COM 911460103 753,228 3,651 0.49 7,028 8.39 0.0001
2025-08-11 2025-06-30 13F UNITED SEC BANCSHARES CALIF COM 911460103 749,577 79,412 11.85 6,484 7.98 0.0001
2025-05-09 2025-03-31 13F UNITED SEC BANCSHARES CALIF COM 911460103 670,165 0 0.00 6,005 -11.29 0.0001
2025-02-11 2024-12-31 13F UNITED SEC BANCSHARES CALIF COM 911460103 670,165 1,969 0.29 6,769 16.31 0.0001
2024-11-13 2024-09-30 13F UNITED SEC BANCSHARES CALIF COM 911460103 668,196 108,536 19.39 5,820 43.43 0.0001
2024-08-13 2024-06-30 13F UNITED SEC BANCSHARES CALIF COM 911460103 559,660 695 0.12 4,058 -5.85 0.0001
2024-05-10 2024-03-31 13F UNITED SEC BANCSHARES CALIF COM 911460103 558,965 14,472 2.66 4,310 -5.90 0.0001
2024-03-11 2023-12-31 13F/A-1 UNITED SEC BANCSHARES CALIF COM 911460103 544,493 300,318 122.99 4,579 152.15 0.0001
2024-02-14 2023-12-31 13F UNITED SEC BANCSHARES CALIF COM 911460103 544,493 300,318 4,579 0.0001
2023-12-18 2023-09-30 13F/A-1 UNITED SEC BANCSHARES CALIF COM 911460103 244,175 66,595 37.50 1,817 53.64 0.0000
2023-11-14 2023-09-30 13F UNITED SEC BANCSHARES CALIF COM 911460103 244,175 66,595 1,817 0.0000
2023-08-14 2023-06-30 13F UNITED SEC BANCSHARES CALIF COM 911460103 177,580 -2,502 -1.39 1,183 2.96 0.0000
2023-07-14 2023-03-31 13F/A-1 UNITED SEC BANCSHARES CALIF COM 911460103 180,082 -9,400 -4.96 1,149 -17.11 0.0000
2023-05-15 2023-03-31 13F UNITED SEC BANCSHARES CALIF COM 911460103 180,082 -9,400 1,149 0.0000
2023-02-10 2022-12-31 13F UNITED SEC BANCSHARES CALIF COM 911460103 189,482 276 0.15 1,385 12.24 0.0000
2022-11-14 2022-09-30 13F UNITED SEC BANCSHARES CALIF COM 911460103 189,206 -381,690 -66.86 1,234 -71.64 0.0000
2022-08-12 2022-06-30 13F UNITED SEC BANCSHARES CALIF COM 911460103 570,896 9,661 1.72 4,351 -6.61 0.0001
2022-05-13 2022-03-31 13F UNITED SEC BANCSHARES CALIF COM 911460103 561,235 16,246 2.98 4,659 5.29 0.0001
2022-02-14 2021-12-31 13F UNITED SEC BANCSHARES CALIF COM 911460103 544,989 1,527 0.28 4,425 1.89 0.0001
2021-11-12 2021-09-30 13F UNITED SEC BANCSHARES CALIF COM 911460103 543,462 -12,013 -2.16 4,343 -4.30 0.0001
2021-08-13 2021-06-30 13F UNITED SEC BANCSHARES CALIF COM 911460103 555,475 -44,821 -7.47 4,538 -7.69 0.0001
2021-05-14 2021-03-31 13F UNITED SEC BANCSHARES CALIF COM 911460103 600,296 8,961 1.52 4,916 17.92 0.0001
2021-02-12 2020-12-31 13F UNITED SEC BANCSHARES CALIF COM 911460103 591,335 4,327 0.74 4,169 16.26 0.0001
2020-11-16 2020-09-30 13F UNITED SEC BANCSHARES CALIF COM 911460103 587,008 -240 -0.04 3,586 -8.73 0.0001
2020-08-14 2020-06-30 13F UNITED SEC BANCSHARES CALIF COM 911460103 587,248 1,332 0.23 3,929 4.77 0.0001
2020-05-15 2020-03-31 13F UNITED SECURITY BANCSHARES C COM 911460103 585,916 720 0.12 3,750 -40.28 0.0002
2020-02-14 2019-12-31 13F UNITED SECURITY BANCSHARES C COM 911460103 585,196 16,590 2.92 6,279 4.96 0.0002
2019-11-14 2019-09-30 13F UNITED SECURITY BANCSHARES C COM 911460103 568,606 4,449 0.79 5,982 -6.89 0.0002
2019-08-14 2019-06-30 13F UNITED SECURITY BANCSHARES CA COM 911460103 564,157 18,399 3.37 6,425 11.06 0.0002
2019-05-15 2019-03-31 13F UNITED SECURITY BANCSHARES C COM 911460103 545,758 39,814 7.87 5,785 19.35 0.0002
2019-02-14 2018-12-31 13F UNITED SECURITY BANCSHARES CA COM 911460103 505,944 225 0.04 4,847 -13.66 0.0002
2018-12-13 2018-09-30 13F/A-2 UNITED SECURITY BANCSHARES C COM 911460103 505,719 3,910 0.78 5,614 -0.12 0.0002
2018-11-23 2018-09-30 13F/A-1 UNITED SECURITY BANCSHARES C COM 911460103 505,719 0 5,614 0.0002
2018-11-14 2018-09-30 13F UNITED SECURITY BANCSHARES C COM 911460103 505,719 3,910 5,614
2018-08-14 2018-06-30 13F UNITED SECURITY BANCSHARES C COM 911460103 501,809 13,831 2.83 5,621 7.15 0.0002
2018-05-15 2018-03-31 13F UNITED SECURITY BANCSHARES C COM 911460103 487,978 280,614 135.32 5,246 129.99 0.0002
2018-02-14 2017-12-31 13F UNITED SECURITY BANCSHARES C COM 911460103 207,364 28,364 15.85 2,281 34.18 0.0001
2017-11-14 2017-09-30 13F UNITED SECURITY BANCSHARES C COM 911460103 179,000 -400 -0.22 1,700 2.47 0.0001
2017-08-24 2017-06-30 13F/A-1 UNITED SECURITY BANCSHARES C COM 911460103 179,400 -34,518 -16.14 1,659 6.21 0.0001
2017-08-11 2017-06-30 13F UNITED SECURITY BANCSHARES C COM 911460103 179,400 -34,518 1,659
2017-05-12 2017-03-31 13F UNITED SECURITY BANCSHARES C COM 911460103 213,918 0 0.00 1,562 -5.79 0.0001
2017-02-14 2016-12-31 13F UNITED SECURITY BANCSHARES C COM 911460103 213,918 4,211 2.01 1,658 27.24 0.0001
2016-11-14 2016-09-30 13F UNITED SECURITY BANCSHARES C COM 911460103 209,707 2,075 1.00 1,303 -2.25 0.0001
2016-08-10 2016-06-30 13F UNITED SECURITY BANCSHARES C COM 911460103 207,632 0 0.00 1,333 29.67 0.0001
2016-05-13 2016-03-31 13F UNITED SECURITY BANCSHARES C COM 911460103 207,632 -17,946 -7.96 1,028 -14.69 0.0001
2016-02-08 2015-12-31 13F UNITED SECURITY BANCSHARES C COM 911460103 225,578 4,442 2.01 1,205 2.82 0.0001
2015-11-12 2015-09-30 13F/A-1 UNITED SECURITY BANCSHARES C COM 911460103 221,136 2,188 1.00 1,172 6.16 0.0000
2015-08-13 2015-06-30 13F UNITED SECURITY BANCSHARES C COM 911460103 218,948 2,166 1.00 1,104 -4.83 0.0001
2015-05-15 2015-03-31 13F/A-1 UNITED SECURITY BANCSHARES C COM 911460103 216,782 2,144 1.00 1,160 -0.85 0.0001
2015-05-14 2015-03-31 13F UNITED SECURITY BANCSHARES C COM 911460103 216,782 1,160
2015-02-12 2014-12-31 13F UNITED SECURITY BANCSHARES C COM 911460103 214,638 2,123 1.00 1,170 -1.18 0.0001
2014-11-12 2014-09-30 13F UNITED SECURITY BANCSHARES C COM 911460103 212,515 4,123 1.98 1,184 2.25 0.0001
2014-08-11 2014-06-30 13F UNITED SECURITY BANCSHARES C COM 911460103 208,392 2,557 1.24 1,158 1.40 0.0001
2014-05-13 2014-03-31 13F UNITED SECURITY BANCSHARES C COM 911460103 205,835 453 0.22 1,142 10.23 0.0001
2014-02-12 2013-12-31 13F UNITED SECURITY BANCSHARES C COM 911460103 205,382 -2,423 -1.17 1,036 18.13 0.0001
2013-11-07 2013-09-30 13F UNITED SECURITY BANCSHARES C COM 911460103 207,805 -4,874 -2.29 877 -2.66 0.0001
2013-08-13 2013-06-30 13F UNITED SECURITY BANCSHARES C COM 911460103 212,679 212,679 901 0.0001
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.