MainStreet Bancshares, Inc. (MNSB)
MNSB moved a median of 0.00% 30 minutes after news, and 0.00% by the close. How MNSB actually reacts to news — the realized, point-in-time move the market made, measured across 218 labeled events over the last three years with zero look-ahead.
MNSB’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 33% | 114 |
| 30-min | 0.00% | 45% | 179 |
| 60-min | 0.00% | 46% | 198 |
| to close | 0.00% | 48% | 218 |
| Middle 50% of MNSB reactions | -0.28% to +0.35% |
|---|---|
| Median reaction (30-min) | 0.00% |
| Measured reactions | 218 |
Half of all MainStreet Bancshares, Inc. news events land between -0.28% and +0.35% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
Email me when MNSB moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to MNSB's baseline. Nothing else.
Recent MNSB events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| MainStreet Bancshares, Inc. Delivers Solid Second Quarter 2026 Performance | Press release | GlobeNewswire | -0.78% | +0.62% | |
| Oliver James to Lead MainStreet Bank’s Commercial and Government Contract Lending Team | Press release | GlobeNewswire | — | -0.44% | |
| MainStreet Bancshares, Inc. Announces First Quarter 2026 Results | Press release | GlobeNewswire | +1.24% | +0.17% | |
| MainStreet Bank Elevates David Murrell to Executive VP & Chief Banking Officer | Press release | GlobeNewswire | +0.47% | +0.56% | |
| MainStreet Bank Appoints Morgan Higgins to Board of Directors | Press release | GlobeNewswire | +0.02% | -1.17% | |
| Form 10-K MainStreet Bancshares, For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | -0.42% | +0.05% | |
| Form 10-K/A MainStreet Bancshares, For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | -0.01% | -0.52% | |
| Form 8-K MainStreet Bancshares, For: Mar 03 | SEC filing · Form 8-K | SEC EDGAR | -0.71% | +1.33% | |
| Form 8-K MainStreet Bancshares, For: Feb 20 | SEC filing · Form 8-K | SEC EDGAR | +0.22% | +0.93% | |
| MainStreet Bank Saddles Up: Bringing Bespoke Community Banking to Middleburg's Historic Streets | Press release | PR Newswire | +0.22% | +0.93% | |
| Form 8-K MainStreet Bancshares, For: Jan 27 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +1.93% | |
| Form 8-K MainStreet Bancshares, For: Jan 26 | SEC filing · Form 8-K | SEC EDGAR | +0.14% | -2.47% | |
| MainStreet Bancshares Inc. Reports a Profitable 2025 and remains focused on serving the Washington, DC Metropolitan Community | Press release | PR Newswire | +0.14% | -2.47% | |
| Form 8-K MainStreet Bancshares, For: Jan 12 | SEC filing · Form 8-K | SEC EDGAR | -0.64% | -0.50% | |
| Form 8-K MainStreet Bancshares, For: Dec 18 | SEC filing · Form 8-K | SEC EDGAR | +0.47% | +0.00% | |
| Form 8-K MainStreet Bancshares, For: Dec 15 | SEC filing · Form 8-K | SEC EDGAR | +0.70% | -1.78% | |
| Form 8-K MainStreet Bancshares, For: Dec 05 | SEC filing · Form 8-K | SEC EDGAR | -0.15% | +0.35% | |
| Form 8-K MainStreet Bancshares, For: Nov 20 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +0.26% | |
| MainStreet Bancshares, Inc. Announces CFO Planned Retirement | Press release | PR Newswire | +0.00% | +0.26% | |
| Form 8-K MainStreet Bancshares, For: Nov 21 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +1.94% | |
| Form 10-Q MainStreet Bancshares, For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.41% | +0.00% | |
| Form 8-K MainStreet Bancshares, For: Nov 04 | SEC filing · Form 8-K | SEC EDGAR | -1.00% | -1.32% | |
| Form 8-K MainStreet Bancshares, For: Oct 28 | SEC filing · Form 8-K | SEC EDGAR | — | -0.21% | |
| Form 8-K MainStreet Bancshares, For: Oct 27 | SEC filing · Form 8-K | SEC EDGAR | +0.82% | -0.41% | |
| MainStreet Bancshares Inc. Reports Another Profitable Quarter | Press release | PR Newswire | +0.82% | -0.41% | |
| Form 8-K MainStreet Bancshares, For: Oct 16 | SEC filing · Form 8-K | SEC EDGAR | +0.22% | +2.43% | |
| Form 8-K MainStreet Bancshares, For: Oct 14 | SEC filing · Form 8-K | SEC EDGAR | — | +2.38% | |
| MainStreet Bancshares, Inc. Appoints Wendy Adeler Hall to Board of Directors | Press release | PR Newswire | +0.97% | +1.07% | |
| Form 8-K MainStreet Bancshares, For: Sep 18 | SEC filing · Form 8-K | SEC EDGAR | — | -0.05% | |
| Form 8-K MainStreet Bancshares, For: Aug 27 | SEC filing · Form 8-K | SEC EDGAR | — | +0.04% | |
| Form 10-Q MainStreet Bancshares, For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | — | +2.46% | |
| Form 10-K/A MainStreet Bancshares, For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +0.00% | -0.50% | |
| Form 8-K MainStreet Bancshares, For: Jul 23 | SEC filing · Form 8-K | SEC EDGAR | -0.95% | -0.51% | |
| Form 8-K MainStreet Bancshares, For: Jul 22 | SEC filing · Form 8-K | SEC EDGAR | +2.05% | +4.59% | |
| MainStreet Bancshares Inc. Reports Strong Second Quarter Earnings | Press release | PR Newswire | +2.05% | +4.59% | |
| Form 8-K MainStreet Bancshares, For: Jul 08 | SEC filing · Form 8-K | SEC EDGAR | — | -0.05% | |
| Form 8-K MainStreet Bancshares, For: Jul 07 | SEC filing · Form 8-K | SEC EDGAR | — | -1.17% | |
| MainStreet Bank Promotes Alex Vari to Chief Financial Officer | Press release | PR Newswire | +0.12% | -1.05% | |
| Form 11-K MainStreet Bancshares, For: Dec 31 | SEC filing · Form 11-K | SEC EDGAR | -0.08% | -0.08% | |
| Form 8-K MainStreet Bancshares, For: May 30 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -2.04% | |
| Form 8-K MainStreet Bancshares, For: May 23 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -0.36% | |
| Form 10-Q MainStreet Bancshares, For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | — | -0.52% | |
| Form 8-K MainStreet Bancshares, For: May 06 | SEC filing · Form 8-K | SEC EDGAR | -0.89% | +1.24% | |
| Form 8-K MainStreet Bancshares, For: Apr 22 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +4.34% | |
| Form 8-K MainStreet Bancshares, For: Apr 21 | SEC filing · Form 8-K | SEC EDGAR | -2.21% | -2.00% | |
| MainStreet Bancshares Inc. Reports First Quarter Results | Press release | PR Newswire | -2.21% | -2.00% | |
| Form ARS MainStreet Bancshares, For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | -0.13% | +3.59% | |
| Form DEF 14A MainStreet Bancshares, For: May 21 | SEC filing · Form DEF | SEC EDGAR | -0.13% | +3.59% | |
| Form 8-K MainStreet Bancshares, For: Apr 07 | SEC filing · Form 8-K | SEC EDGAR | — | -2.74% | |
| Form 10-K/A MainStreet Bancshares, For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +0.00% | +0.00% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the MNSB section they belong to.
Where else MNSB is measured.
MNSB earnings → · Analyst actions → · SEC filings →
Other Financial Services names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| BLACKROCK NY MUNI-BOND CO (BQH) | 218 | 0.00% | 32% |
| FOSUN INTL LTD UNSP/ADR (FOSUY) | 218 | 0.00% | 21% |
| Blackrock MuniYield Pennsylvania Quality Fund (MPA) | 218 | 0.00% | 39% |
| Nuveen Intermediate Duration Municipal Term Fund Common Shares of Beneficial Interest (NID) | 218 | 0.00% | 46% |
Same sector, same measurement: percent move vs. the price at the news timestamp, read at 30 minutes. Sample sizes differ, so the medians are comparable but the confidence behind them is not.
All Financial Services names, measured the same way →
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Every name we’ve measured, in one place.
How the numbers are made.
How is MainStreet Bancshares, Inc.'s median reaction calculated?
Every labeled MNSB news event is measured from its own timestamp: the last trade before the news is the base price, and the move is read at fixed horizons — 30 minutes of trading, then the close. The median across 218 events is what this page reports. Point-in-time, zero look-ahead: no event borrows information from a later one.
What counts as a positive reaction?
Any event whose price move is above zero at the horizon, relative to the last trade before the news timestamp. 45% of MNSB's measured events are up at 30 minutes; the rest close the window flat or negative.
How often is this page updated?
The news table refreshes automatically as new events are labeled and priced. The reaction medians are re-pulled in batches from the dataset — the figures here are as of 2026-09-21.
Does MNSB's past reaction predict its next one?
No. These are realized facts about past events, not forecasts. They describe a distribution — they say nothing certain about any future move.