MainStreet Bancshares, Inc.
US ˙ NasdaqCM ˙ US56064Y1001

SecurityMNSB / MainStreet Bancshares, Inc.
InstitutionBarclays Plc
Latest Disclosed Ownership26,048 shares
Latest Disclosed Value $ 530,338
Barclays Plc reports 16.59% increase in ownership of MNSB / MainStreet Bancshares, Inc.

On February 13, 2026 - Barclays Plc filed a 13F-HR form disclosing ownership of 26,048 shares of MainStreet Bancshares, Inc. (US:MNSB) valued at $530,337 USD as of December 31, 2025. The entity filed a previous 13F-HR/A on March 31, 2026 disclosing 22,341 shares of MainStreet Bancshares, Inc.. This represents a change in shares of 16.59% during the quarter. The current value of the position is $621,766 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)
2026-02-13 2025-12-31 13F MAINSTREET BANCSHARES COM 56064Y100 26,048 3,707 16.59 530 13.98 0.0001
2026-03-31 2025-09-30 13F/A-3 MAINSTREET BANCSHARES COM 56064Y100 22,341 -2,814 -11.19 465 -2.11 0.0001
2026-03-19 2025-09-30 13F/A-2 MAINSTREET BANCSHARES COM 56064Y100 16,759 -8,396 309 0.0001
2025-11-12 2025-09-30 13F MAINSTREET BANCSHARES COM 56064Y100 22,341 -2,814 465 0.0001
2026-02-27 2025-06-30 13F/A-2 MAINSTREET BANCSHARES COM 56064Y100 25,155 11,251 80.92 475 104.74 0.0001
2025-08-14 2025-06-30 13F/A-1 MAINSTREET BANCSHARES COM 56064Y100 25,155 11,251 0 0.0001
2025-08-13 2025-06-30 13F MAINSTREET BANCSHARES COM 56064Y100 25,155 11,251 0 0.0000
2026-03-17 2025-03-31 13F/A-1 MAINSTREET BANCSHARES COM 56064Y100 13,904 -636 -4.37 232 -11.79 0.0001
2025-05-15 2025-03-31 13F MAINSTREET BANCSHARES COM 56064Y100 13,904 -636 0 0.0001
2026-03-19 2024-12-31 13F/A-1 MAINSTREET BANCSHARES COM 56064Y100 14,540 -2,219 -13.24 263 -14.89 0.0001
2025-02-13 2024-12-31 13F MAINSTREET BANCSHARES COM 56064Y100 14,540 -2,219 0 0.0001
2026-03-31 2024-09-30 13F/A-2 MAINSTREET BANCSHARES COM 56064Y100 16,759 4,256 34.04 309 39.82 0.0001
2024-11-19 2024-09-30 13F/A-1 MAINSTREET BANCSHARES COM 56064Y100 16,759 4,256 0 0.0001
2024-11-15 2024-09-30 13F MAINSTREET BANCSHARES COM 56064Y100 16,759 4,256 0 0.0001
2026-03-23 2024-06-30 13F/A-1 MAINSTREET BANCSHARES COM 56064Y100 12,503 -451 -3.48 222 -5.96 0.0001
2024-08-14 2024-06-30 13F MAINSTREET BANCSHARES COM 56064Y100 12,503 -451 0 0.0001
2026-03-24 2024-03-31 13F/A-1 MAINSTREET BANCSHARES COM 56064Y100 12,954 -4,685 -26.56 235 -46.22 0.0001
2024-05-15 2024-03-31 13F MAINSTREET BANCSHARES COM 56064Y100 12,954 -4,685 0 0.0001
2026-03-25 2023-12-31 13F/A-1 MAINSTREET BANCSHARES COM 56064Y100 17,639 8,122 85.34 438 124.10 0.0002
2024-02-15 2023-12-31 13F MAINSTREET BANCSHARES COM 56064Y100 17,639 8,122 0 0.0002
2026-03-26 2023-09-30 13F/A-1 MAINSTREET BANCSHARES COM 56064Y100 9,517 2,025 27.03 195 15.38 0.0001
2023-11-07 2023-09-30 13F MAINSTREET BANCSHARES COM 56064Y100 9,517 2,025 0 0.0001
2026-03-30 2023-06-30 13F/A-2 MAINSTREET BANCSHARES COM 56064Y100 7,492 7,492 170 0.0001
2023-09-20 2023-06-30 13F/A-1 MAINSTREET BANCSHARES COM 56064Y100 7,492 7,492 0 0.0001
2023-08-03 2023-06-30 13F MAINSTREET BANCSHARES COM 56064Y100 7,492 7,492 0 0.0001
2022-02-23 2021-12-31 13F/A-1 MAINSTREET BANCSHARES COM 56064Y100 0 -858 -100.00 0 -100.00
2022-02-14 2021-12-31 13F MAINSTREET BANCSHARES COM 56064Y100 0 -858 0
2021-11-09 2021-09-30 13F MAINSTREET BANCSHARES COM 56064Y100 858 -566 -39.75 21 -34.37 0.0000
2021-08-13 2021-06-30 13F MAINSTREET BANCSHARES COM 56064Y100 1,424 -3,790 -72.69 32 -70.37 0.0000
2021-05-13 2021-03-31 13F MAINSTREET BANCSHARES COM 56064Y100 5,214 3,133 150.55 108 208.57 0.0001
2021-02-11 2020-12-31 13F MAINSTREET BANCSHARES COM 56064Y100 2,081 -1,157 -35.73 35 -12.50 0.0000
2020-11-12 2020-09-30 13F MAINSTREET BANCSHARES COM 56064Y100 3,238 -670 -17.14 40 -21.57 0.0000
2020-08-12 2020-06-30 13F MAINSTREET BANCSHARES COM 56064Y100 3,908 1,552 65.87 51 30.77 0.0000
2020-05-13 2020-03-31 13F MAINSTREET BANCSHARES COM 56064Y100 2,356 -4,881 -67.45 39 -76.51 0.0000
2020-02-10 2019-12-31 13F MAINSTREET BANCSHARES COM 56064Y100 7,237 3,624 100.30 166 118.42 0.0001
2019-11-15 2019-09-30 13F/A-1 MAINSTREET BANCSHARES COM 56064Y100 3,613 -1,111 -23.52 76 -28.97 0.0000
2019-11-14 2019-09-30 13F MAINSTREET BANCSHARES COM 56064Y100 3,613 -1,111 76 17.5713
2019-08-14 2019-06-30 13F MAINSTREET BANCSHARES COM 56064Y100 4,724 4,724 107 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.