MainStreet Bancshares (MNSB)
MainStreet Bancshares on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, earnings dates and insider trades. Listed on Nasdaq, classified by the SEC as state commercial banks.
186K
Short interest
settlement 2026-09-30
7.0
Days to cover
-1.8 days vs prior
71.5%
Short share of volume
2026-10-23
177
Fails to deliver
settlement 2026-09-18
Mon 26 Oct
Next earnings
estimated date
$0
Insider flow, 90 days
0 buys, 0 sells
As of 2026-10-23.
Short interest
FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSONAs of 30 September 2026, short interest in MNSB is 185,968 shares, down 31,121 shares over the last month. Over the last 48 readings it ranged from 13,576 shares (15 October 2024) to 251,811 shares (29 August 2025). At the reported average volume of 27K shares a day that is 7.0 days to cover.
Embed this chart.The embed keeps its attribution line.
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| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-09-30 | 185,968 | -17.7% | 26,508 | 7.02 |
| 2026-09-15 | 225,855 | +4.0% | 25,654 | 8.80 |
| 2026-08-31 | 217,089 | +13.8% | 34,271 | 6.33 |
| 2026-08-14 | 190,719 | +6.5% | 34,088 | 5.59 |
| 2026-07-31 | 179,058 | +0.2% | 36,472 | 4.91 |
| 2026-07-15 | 178,692 | +4.0% | 23,931 | 7.47 |
| 2026-06-30 | 171,760 | -4.8% | 75,618 | 2.27 |
| 2026-06-15 | 180,413 | +3.1% | 37,337 | 4.83 |
| 2026-05-29 | 174,990 | +12.8% | 40,124 | 4.36 |
| 2026-05-15 | 155,120 | +1.4% | 32,404 | 4.79 |
| 2026-04-30 | 152,981 | -16.8% | 72,715 | 2.10 |
| 2026-04-15 | 183,933 | -7.9% | 43,352 | 4.24 |
| 2026-03-31 | 199,643 | -6.5% | 44,207 | 4.52 |
| 2026-03-13 | 213,439 | +7.5% | 67,164 | 3.18 |
| 2026-02-27 | 198,460 | -1.3% | 63,759 | 3.11 |
| 2026-02-13 | 201,129 | -8.8% | 60,096 | 3.35 |
| 2026-01-30 | 220,559 | +13.3% | 68,151 | 3.24 |
| 2026-01-15 | 194,606 | -10.2% | 28,530 | 6.82 |
| 2025-12-31 | 216,690 | -5.3% | 32,966 | 6.57 |
| 2025-12-15 | 228,856 | +1.8% | 48,351 | 4.73 |
| 2025-11-28 | 224,740 | -9.1% | 22,386 | 10.04 |
| 2025-11-14 | 247,109 | +18.2% | 27,204 | 9.08 |
| 2025-10-31 | 209,050 | -2.8% | 48,909 | 4.27 |
| 2025-10-15 | 215,055 | -11.7% | 24,129 | 8.91 |
| 2025-09-30 | 243,495 | -0.6% | 45,886 | 5.31 |
| 2025-09-15 | 244,993 | -2.7% | 18,321 | 13.37 |
| 2025-08-29 | 251,811 | +2.0% | 12,787 | 19.69 |
| 2025-08-15 | 246,817 | +2.0% | 19,119 | 12.91 |
| 2025-07-31 | 242,060 | +1.1% | 21,258 | 11.39 |
| 2025-07-15 | 239,325 | +6.9% | 28,625 | 8.36 |
| 2025-06-30 | 223,963 | +174.5% | 106,581 | 2.10 |
| 2025-06-13 | 81,598 | +8.1% | 23,629 | 3.45 |
| 2025-05-30 | 75,490 | +5.1% | 22,418 | 3.37 |
| 2025-05-15 | 71,824 | +4.4% | 27,626 | 2.60 |
| 2025-04-30 | 68,823 | +94.3% | 28,243 | 2.44 |
| 2025-04-15 | 35,420 | -3.9% | 13,065 | 2.71 |
| 2025-03-31 | 36,847 | +62.7% | 10,831 | 3.40 |
| 2025-03-14 | 22,647 | +19.9% | 13,702 | 1.65 |
| 2025-02-28 | 18,886 | +2.0% | 8,654 | 2.18 |
| 2025-02-14 | 18,518 | +7.3% | 10,501 | 1.76 |
| 2025-01-31 | 17,267 | -6.5% | 7,579 | 2.28 |
| 2025-01-15 | 18,465 | +1.2% | 8,328 | 2.22 |
| 2024-12-31 | 18,253 | -13.9% | 7,366 | 2.48 |
| 2024-12-13 | 21,203 | +26.9% | 16,661 | 1.27 |
| 2024-11-29 | 16,711 | +10.7% | 6,101 | 2.74 |
| 2024-11-15 | 15,097 | +3.0% | 9,044 | 1.67 |
| 2024-10-31 | 14,660 | +8.0% | 6,475 | 2.26 |
| 2024-10-15 | 13,576 | -2.4% | 5,339 | 2.54 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 23 October 2026, the short share of MNSB volume is 71.5%, down 7.7 points over the last five sessions. Over the last 30 readings it ranged from 14.2% (12 October 2026) to 88.4% (8 October 2026). The latest reading is 12.6 points above the 30-session average of 58.9%, on 9K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-10-23 | 6K | 9K | 71.5% | 0 |
| 2026-10-22 | 14K | 27K | 50.7% | 0 |
| 2026-10-21 | 4K | 8K | 54.1% | 0 |
| 2026-10-20 | 11K | 22K | 48.9% | 0 |
| 2026-10-19 | 5K | 10K | 48.4% | 0 |
| 2026-10-16 | 8K | 10K | 79.2% | 0 |
| 2026-10-15 | 3K | 3K | 79.5% | 0 |
| 2026-10-14 | 3K | 5K | 60.2% | 0 |
| 2026-10-13 | 5K | 8K | 63.7% | 0 |
| 2026-10-12 | 2K | 13K | 14.2% | 0 |
| 2026-10-09 | 4K | 7K | 59.2% | 0 |
| 2026-10-08 | 5K | 5K | 88.4% | 0 |
| 2026-10-07 | 6K | 8K | 77.3% | 0 |
| 2026-10-06 | 2K | 3K | 73.6% | 0 |
| 2026-10-05 | 2K | 4K | 54.4% | 0 |
| 2026-10-02 | 3K | 9K | 30.1% | 0 |
| 2026-10-01 | 8K | 12K | 68.5% | 0 |
| 2026-09-30 | 7K | 10K | 70.4% | 0 |
| 2026-09-29 | 6K | 8K | 73.8% | 0 |
| 2026-09-28 | 2K | 4K | 49.5% | 0 |
| 2026-09-25 | 3K | 6K | 48.9% | 0 |
| 2026-09-24 | 2K | 4K | 58.3% | 0 |
| 2026-09-23 | 3K | 6K | 59.3% | 0 |
| 2026-09-22 | 4K | 7K | 55.4% | 0 |
| 2026-09-21 | 2K | 6K | 33.7% | 0 |
| 2026-09-18 | 6K | 8K | 74.0% | 0 |
| 2026-09-17 | 3K | 5K | 52.3% | 0 |
| 2026-09-16 | 4K | 7K | 54.2% | 0 |
| 2026-09-15 | 3K | 6K | 49.6% | 0 |
| 2026-09-14 | 4K | 6K | 65.9% | 0 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 18 September 2026, the fails-to-deliver balance in MNSB is 177 shares, down 56 shares over the last settlement date. Over the last 30 readings it ranged from 1 share (13 November 2025) to 9,866 shares (18 December 2025). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-09-18 | 177 | $24.96 | $4K |
| 2026-09-14 | 233 | $25.26 | $6K |
| 2026-08-28 | 80 | $25.23 | $2K |
| 2026-08-26 | 71 | $24.79 | $2K |
| 2026-08-21 | 54 | $25.26 | $1K |
| 2026-08-20 | 52 | $24.95 | $1K |
| 2026-08-14 | 196 | $25.18 | $5K |
| 2026-08-10 | 1 | $24.10 | $24 |
| 2026-06-30 | 305 | $24.65 | $8K |
| 2026-05-29 | 985 | $23.04 | $23K |
| 2026-05-28 | 985 | $22.98 | $23K |
| 2026-03-26 | 1 | $22.01 | $22 |
| 2026-03-18 | 663 | $21.61 | $14K |
| 2026-03-02 | 6 | $22.20 | $133 |
| 2026-02-27 | 17 | $22.90 | $389 |
| 2026-02-26 | 337 | $22.76 | $8K |
| 2026-02-25 | 47 | $22.20 | $1K |
| 2026-02-09 | 11 | $22.86 | $251 |
| 2026-02-03 | 51 | $22.38 | $1K |
| 2026-02-02 | 51 | $21.41 | $1K |
| 2026-01-26 | 1 | $20.51 | $21 |
| 2026-01-22 | 5 | $20.21 | $101 |
| 2025-12-18 | 9,866 | $21.76 | $215K |
| 2025-12-15 | 256 | $21.50 | $6K |
| 2025-12-04 | 1,062 | $20.10 | $21K |
| 2025-12-02 | 1 | $19.58 | $20 |
| 2025-11-13 | 1 | $18.32 | $18 |
| 2025-11-04 | 234 | $18.84 | $4K |
| 2025-11-03 | 149 | $18.55 | $3K |
| 2025-10-23 | 24 | $18.89 | $453 |
Insider trades
SEC Form 4, newest first. JSONNo open-market insider trades were reported for MNSB in the last 90 days. The most recent filings are listed below. Latest filing: Higgins Joan Morgan (Director - MainStreet Bank) on 2026-10-01.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-10-01 | Higgins Joan Morgan | Director - MainStreet Bank | Grant | 971 | $24.74 | $24K | 3K |
| 2026-10-01 | Hall Wendy Adeler | Director | Grant | 849 | $24.74 | $21K | 4K |
| 2026-07-01 | Higgins Joan Morgan | Director - MainStreet Bank | Grant | 973 | $24.69 | $24K | 2K |
| 2026-07-01 | Hall Wendy Adeler | Director | Grant | 973 | $24.69 | $24K | 3K |
| 2026-07-01 | GREEN DARRELL | Director | Grant | 851 | $24.69 | $21K | 36K |
| 2026-07-01 | DeLeon Rafael E | Director | Grant | 753 | $24.69 | $19K | 15K |
| 2026-06-04 | Vari Richard Alexander | Chief Financial Officer | Sell | 5K | $23.20 | $104K | 34K |
| 2026-04-03 | RUST PATSY I | Director | Grant | 534 | $22.48 | $12K | 26K |
| 2026-04-03 | Higgins Joan Morgan | Director - MainStreet Bank | Grant | 356 | $22.48 | $8K | 602 |
| 2026-04-03 | Hall Wendy Adeler | Director | Grant | 534 | $22.48 | $12K | 2K |
| 2026-04-03 | GREEN DARRELL | Director | Grant | 356 | $22.48 | $8K | 35K |
| 2026-04-03 | DeLeon Rafael E | Director | Grant | 1K | $22.48 | $24K | 15K |
| 2026-02-20 | Youngren Todd | EVP, Director | Tax withholding | 812 | $20.36 | $17K | 5K |
| 2026-02-20 | Freesmeier William | SVP, Chief of Staff | Tax withholding | 744 | $20.36 | $15K | 9K |
| 2026-02-20 | CHMELIK THOMAS J | Senior EVP | Tax withholding | 3K | $20.36 | $57K | 61K |
| 2026-02-20 | Baboval Michael B | Chief Risk Officer | Tax withholding | 738 | $20.36 | $15K | 6K |
| 2026-02-20 | Vari Richard Alexander | Chief Financial Officer | Tax withholding | 2K | $20.36 | $31K | 31K |
| 2026-02-20 | Hersiburane Abdulhamid | President, MainSteet Bank | Tax withholding | 1K | $20.36 | $27K | 34K |
| 2026-02-20 | DICK JEFF W | Chairman, President and CEO | Grant | 24K | $22.65 | $533K | 207K |
| 2026-02-20 | DICK JEFF W | Chairman, President and CEO | Tax withholding | 3K | $20.36 | $71K | 183K |
| 2026-01-30 | Youngren Todd | EVP, Director | Grant | 2K | $20.42 | $41K | 8K |
| 2026-01-30 | Baboval Michael B | Chief Risk Officer | Grant | 2K | $20.42 | $42K | 7K |
| 2026-01-09 | Vari Richard Alexander | Chief Financial Officer | Grant | 10K | $20.36 | $204K | 33K |
| 2026-01-02 | Manouchehri Ali R | Director - MainStreet Bank | Grant | 1K | $20.36 | $24K | 9K |
| 2026-01-02 | Hall Wendy Adeler | Director | Grant | 590 | $20.36 | $12K | 1K |
| 2026-01-02 | GREEN DARRELL | Director | Grant | 1K | $20.36 | $21K | 34K |
| 2026-01-02 | DeLeon Rafael E | Director | Grant | 1K | $20.36 | $24K | 13K |
| 2025-12-09 | CHMELIK THOMAS J | CFO, MainStreet Bancshares Inc | Sell | 5K | $20.05 | $109K | 64K |
| 2025-12-09 | CHMELIK THOMAS J | CFO, MainStreet Bancshares Inc | Sell | 2K | $20.21 | $36K | 69K |
| 2025-12-08 | CHMELIK THOMAS J | CFO, MainStreet Bancshares Inc | Sell | 11K | $19.75 | $224K | 71K |
| 2025-12-08 | CHMELIK THOMAS J | CFO, MainStreet Bancshares Inc | Sell | 12K | $20.10 | $246K | 82K |
| 2025-12-03 | CHMELIK THOMAS J | CFO, MainStreet Bancshares Inc | Sell | 1K | $19.50 | $20K | 0 |
| 2025-12-03 | CHMELIK THOMAS J | CFO, MainStreet Bancshares Inc | Sell | 9K | $19.86 | $173K | 95K |
| 2025-11-24 | DICK JEFF W | Chairman, President and CEO | Buy | 106 | $18.99 | $2K | 195K |
| 2025-11-24 | Brockett Charles C. | Director | Buy | 19 | $18.95 | $360 | 891 |
| 2025-11-24 | Brockett Charles C. | Director | Buy | 123 | $18.95 | $2K | 93K |
| 2025-11-24 | Brockett Charles C. | Director | Buy | 200 | $19.05 | $4K | 27K |
| 2025-11-24 | Brockett Charles C. | Director | Buy | 400 | $19.03 | $8K | 27K |
| 2025-10-01 | Manouchehri Ali R | Director - MainStreet Bank | Grant | 577 | $20.83 | $12K | 8K |
| 2025-10-01 | RUST PATSY I | Director | Grant | 577 | $20.83 | $12K | 26K |
| 2025-10-01 | GREEN DARRELL | Director | Grant | 793 | $20.83 | $17K | 33K |
| 2025-09-08 | DICK JEFF W | Chairman, President and CEO | Buy | 176 | $22.15 | $4K | 195K |
| 2025-06-30 | GREEN DARRELL | Director | Grant | 1K | $18.90 | $24K | 33K |
| 2025-06-30 | DeLeon Rafael E | Director | Grant | 238 | $18.90 | $4K | 12K |
| 2025-05-29 | Brockett Charles C. | Director | Buy | 120 | $19.12 | $2K | 93K |
| 2025-03-31 | RUST PATSY I | Director | Grant | 718 | $16.72 | $12K | 25K |
| 2025-03-31 | GREEN DARRELL | Director | Grant | 937 | $16.72 | $16K | 31K |
| 2025-03-31 | DeLeon Rafael E | Director | Grant | 1K | $16.72 | $24K | 12K |
| 2025-03-03 | Baboval Michael B | Chief Risk Officer | Grant | 729 | $16.80 | $12K | 5K |
| 2025-03-03 | Freesmeier William | SVP | Grant | 4K | $16.80 | $66K | 9K |
| 2025-03-03 | Hersiburane Abdulhamid | President, MainSteet Bank | Grant | 5K | $16.80 | $90K | 40K |
| 2025-03-03 | Vari Richard Alexander | Chief Accounting Officer | Grant | 7K | $16.80 | $120K | 23K |
| 2025-02-21 | DICK JEFF W | Chairman, President and CEO | Buy | 118 | $16.46 | $2K | 195K |
| 2025-01-02 | Manouchehri Ali R | Other | Grant | 442 | $18.10 | $8K | 7K |
| 2025-01-02 | DeLeon Rafael E | Director | Grant | 1K | $18.10 | $24K | 11K |
| 2025-01-02 | RUST PATSY I | Director | Grant | 663 | $18.10 | $12K | 24K |
| 2024-12-12 | Manouchehri Ali R | Other | Buy | 5K | $20.69 | $103K | 7K |
| 2024-12-12 | RUST PATSY I | Director | Buy | 200 | $20.63 | $4K | 24K |
| 2024-12-11 | ECHLOV RUSSELL | Director | Buy | 47 | $19.45 | $914 | 5K |
| 2024-12-11 | ECHLOV RUSSELL | Director | Buy | 103 | $19.50 | $2K | 5K |
| 2024-12-05 | DICK JEFF W | Chairman, President and CEO | Buy | 103 | $18.85 | $2K | 194K |
| 2024-11-25 | Brockett Charles C. | Director | Buy | 300 | $18.81 | $6K | 93K |
| 2024-11-21 | Baboval Michael B | Chief Risk Officer | Sell | 3K | $18.25 | $53K | 4K |
| 2024-11-21 | Brockett Charles C. | Director | Buy | 160 | $18.28 | $3K | 26K |
| 2024-11-21 | Brockett Charles C. | Director | Buy | 20 | $18.21 | $364 | 872 |
| 2024-11-21 | Brockett Charles C. | Director | Buy | 190 | $18.21 | $3K | 93K |
| 2024-10-08 | Manouchehri Ali R | Other | Grant | 496 | $18.15 | $9K | 2K |
| 2024-08-29 | DICK JEFF W | Chairman, President and CEO | Buy | 113 | $16.99 | $2K | 194K |
| 2024-08-16 | DICK JEFF W | Chairman, President and CEO | Buy | 698 | $17.40 | $12K | 194K |
| 2024-08-02 | DICK JEFF W | Chairman, President and CEO | Buy | 2K | $16.40 | $25K | 193K |
| 2024-07-16 | GREEN DARRELL | Director | Grant | 1K | $18.33 | $21K | 30K |
| 2024-07-16 | DeLeon Rafael E | Director | Grant | 831 | $18.33 | $15K | 9K |
| 2024-07-16 | Manouchehri Ali R | Other | Grant | 437 | $18.33 | $8K | 1K |
| 2024-06-04 | Manouchehri Ali R | Other | Buy | 500 | $16.31 | $8K | 858 |
| 2024-05-13 | DICK JEFF W | Chairman, President and CEO | Buy | 1 | $16.84 | $17 | 192K |
| 2024-05-13 | DICK JEFF W | Chairman, President and CEO | Buy | 35 | $16.71 | $585 | 191K |
| 2024-05-13 | DICK JEFF W | Chairman, President and CEO | Buy | 79 | $16.80 | $1K | 191K |
| 2024-05-13 | DICK JEFF W | Chairman, President and CEO | Buy | 582 | $16.82 | $10K | 192K |
| 2024-05-13 | DICK JEFF W | Chairman, President and CEO | Buy | 1 | $16.88 | $17 | 192K |
| 2024-05-13 | DICK JEFF W | Chairman, President and CEO | Buy | 127 | $16.64 | $2K | 191K |
| 2024-05-02 | ECHLOV RUSSELL | Director | Buy | 200 | $16.02 | $3K | 4K |
| 2024-04-29 | DICK JEFF W | Chairman, President and CEO | Buy | 700 | $16.14 | $11K | 191K |
| 2024-04-29 | DICK JEFF W | Chairman, President and CEO | Buy | 200 | $16.02 | $3K | 191K |
| 2024-04-29 | DICK JEFF W | Chairman, President and CEO | Buy | 1 | $16.11 | $16 | 191K |
| 2024-04-29 | DICK JEFF W | Chairman, President and CEO | Buy | 155 | $16.13 | $3K | 191K |
| 2024-04-26 | ECHLOV RUSSELL | Director | Buy | 200 | $15.62 | $3K | 4K |
| 2024-04-24 | Vari Richard Alexander | Chief Accounting Officer | Buy | 310 | $16.05 | $5K | 16K |
| 2024-04-24 | Brockett Charles C. | Director | Buy | 710 | $16.40 | $12K | 92K |
| 2024-04-24 | Brockett Charles C. | Director | Buy | 450 | $16.40 | $7K | 852 |
| 2024-04-01 | Manouchehri Ali R | Other | Grant | 358 | $18.16 | $7K | 858 |
| 2024-04-01 | DeLeon Rafael E | Director | Grant | 1K | $18.16 | $24K | 8K |
| 2024-04-01 | GREEN DARRELL | Director | Grant | 992 | $18.16 | $18K | 29K |
| 2024-03-01 | Brockett Charles C. | Director | Buy | 19 | $18.36 | $349 | 402 |
| 2024-02-29 | DICK JEFF W | Chairman, President and CEO | Buy | 675 | $18.00 | $12K | 190K |
| 2024-02-21 | Brockett Charles C. | Director | Buy | 410 | $18.49 | $8K | 49K |
| 2024-02-21 | Brockett Charles C. | Director | Buy | 215 | $18.12 | $4K | 50K |
| 2024-02-20 | Vari Richard Alexander | Chief Financial Officer | Grant | 7K | $22.65 | $162K | 39K |
| 2024-02-20 | Hersiburane Abdulhamid | President, MainSteet Bank | Grant | 8K | $22.65 | $190K | 42K |
| 2024-01-17 | Vari Richard Alexander | Chief Accounting Officer | Grant | 2K | $21.77 | $38K | 15K |
| 2024-01-17 | DICK JEFF W | Chairman, President and CEO | Grant | 20K | $21.77 | $444K | 189K |
Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.
Planned sales (Form 144)
Newest first. JSON2 Form 144 notices on file for MNSB worth $903K at the prices reported; 0 in the last 90 days worth $0. Latest: Vari, Richard A. (MNSB) filed on 2026-05-28 to sell 4,516 shares ($104K) from 2026-06-01.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-05-28 | Vari, Richard A. (MNSB)Officer | 5K | $104K | 0.063% | 2026-06-01 | Vanguard Brokerage Services |
| 2025-12-02 | Chmelik, Thomas J. (MNSB)Officer, Director | 41K | $800K | 0.527% | 2025-12-02 | Morgan Stanley |
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON4 holders report 5% or more of MNSB in their latest filing, all on Schedule 13G (passive). The largest reported stake is AllianceBernstein L.P. at 5.9% of the class (418,393 shares), filed 2026-08-14 for an event on 2026-06-30.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-08-14 | 13G/Ano. 3 | L. Phillip Stone, IVindividual | 47K | 0.7% | 2026-06-30 |
| 2026-08-14 | 13G/Ano. 3 | Fourthstone LLCinvestment adviser | 47K | 0.7% | 2026-06-30 |
| 2026-08-14 | 13G/Ano. 3 | Fourthstone Master Opportunity Fund Ltdother entity | 32K | 0.5% | 2026-06-30 |
| 2026-08-14 | 13G/Ano. 3 | Fourthstone GP LLCother entity | 16K | 0.2% | 2026-06-30 |
| 2026-08-14 | 13G/Ano. 3 | Fourthstone QP Opportunity Fund LPpartnership | 11K | 0.1% | 2026-06-30 |
| 2026-08-14 | 13G/Ano. 3 | Fourthstone Small-Cap Financials Fund LPpartnership | 5K | 0.1% | 2026-06-30 |
| 2026-08-14 | 13G/Ano. 4 | AllianceBernstein L.P.investment adviser | 418K | 5.9% | 2026-06-30 |
| 2026-07-29 | 13G | BlackRock, Inc.parent holding company | 397K | 5.6% | 2026-06-30 |
| 2026-02-24 | 13G | MainStreet Bank 401(k) Retirement Planemployee benefit plan | 384K | 5.1% | 2025-12-31 |
| 2026-02-13 | 13G/Ano. 1 | Banc Fund X L.P.partnership | 422K | 5.6% | 2025-12-31 |
| 2026-02-13 | 13G/Ano. 1 | TBFC Financial Technologies Fund L.P.partnership | 0 | 0.0% | 2025-12-31 |
| 2026-02-13 | 13G/Ano. 1 | BANC FUNDS CO LLCother entity | 0 | 0.0% | 2025-12-31 |
| 2026-02-13 | 13G/Ano. 1 | Banc Fund IX L.P.partnership | 0 | 0.0% | 2025-12-31 |
| 2026-02-10 | 13G/Ano. 2 | Wellington Group Holdings LLPparent holding company | 359K | 4.7% | 2025-12-31 |
| 2026-02-10 | 13G/Ano. 2 | Wellington Management Group LLPparent holding company | 359K | 4.7% | 2025-12-31 |
| 2026-02-10 | 13G/Ano. 2 | Wellington Investment Advisors Holdings LLPparent holding company | 359K | 4.7% | 2025-12-31 |
13F holders
Tracked managers holding MNSB at their latest 13F. JSON5 of the 30 tracked managers held MNSB at their latest 13F, $3.1M in total at quarter-end prices. Citadel Advisors is the largest at $1.4M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 4 added shares and 1 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| Citadel Advisors | 2026-06-30 | 58K | $1.4M | 0.00% | +35K |
| AQR Capital Management | 2026-06-30 | 29K | $726K | 0.00% | new |
| Two Sigma Investments | 2026-06-30 | 17K | $412K | 0.00% | new |
| Renaissance Technologies | 2026-06-30 | 11K | $272K | 0.00% | -3K |
| Point72 Asset Management | 2026-06-30 | 10K | $259K | 0.00% | new |
Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.
What this page is
MainStreet Bancshares in the regulatory record
Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.
Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.
This page follows MainStreet Bancshares (MNSB), SEC CIK 1693577, listed on Nasdaq, classified by the SEC as state commercial banks. The cross-market tables live on the short interest and insider transactions hubs.
Source and updates
- Short interest
- FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-09-30.JSON and CSV
- Daily short volume
- FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-10-23.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-09-18.JSON and CSV
- Planned sales
- SEC EDGAR Form 144Source: SEC.New notices appear shortly after the SEC posts them; a notice is filed on or before the sale. Latest 2026-05-28.JSON and CSV
- Large holders
- SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-08-14.JSON and CSV
- 13F holders
- SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
- Earnings dates
- SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-07-20.JSON and CSV
- Insider trades
- SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-10-01.JSON and CSV
- Company record
- EDGAR filing index for CIK 1693577Ticker, name and exchange from the SEC's company list, refreshed weekly.
- Rate limits
- 10 requests a minute without a key, 30 with a free key from a free account.
How to read it
- Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
- Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
- Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.
Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.
Other companies the SEC classifies as state commercial banks
Other company pages
Datasets
Frequently Asked Questions
How much of MNSB is sold short?
185,968 shares were held short at the 2026-09-30 settlement, 7.0 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.
What is MNSB's daily short volume?
On 2026-10-23, 6,468 of the 9,047 MNSB shares reported to FINRA were sold short, 71.5% of the day's reported volume. Short volume is a flow for one day, not a position.
Does MNSB have fails to deliver?
The SEC's latest file shows 177 MNSB shares failed to deliver at settlement 2026-09-18. Fails are reported per settlement date and published twice a month with a lag.
Are MNSB insiders buying or selling?
No open-market insider trades were reported for MNSB in the last 90 days. The most recent filings are listed below. Latest filing: Higgins Joan Morgan (Director - MainStreet Bank) on 2026-10-01.
Have MNSB insiders filed to sell?
2 Form 144 notices on file for MNSB worth $903K at the prices reported; 0 in the last 90 days worth $0. Latest: Vari, Richard A. (MNSB) filed on 2026-05-28 to sell 4,516 shares ($104K) from 2026-06-01.
Who owns 5% or more of MNSB?
4 holders report 5% or more of MNSB in their latest filing, all on Schedule 13G (passive). The largest reported stake is AllianceBernstein L.P. at 5.9% of the class (418,393 shares), filed 2026-08-14 for an event on 2026-06-30.
Which tracked 13F managers own MNSB?
5 of the 30 tracked 13F managers held MNSB shares at their latest filing, $3.1M in all. The largest: Ken Griffin's Citadel Advisors (58K shares, $1.4M), Cliff Asness's AQR Capital Management (29K shares, $726K), Two Sigma Investments (17K shares, $412K), Renaissance Technologies (11K shares, $272K), Steve Cohen's Point72 Asset Management (10K shares, $259K).
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.