Middlefield Banc Corp. (MBCN)
MBCN moved a median of 0.00% 30 minutes after news, and +0.03% by the close. How MBCN actually reacts to news — the realized, point-in-time move the market made, measured across 252 labeled events over the last three years with zero look-ahead.
MBCN’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 21% | 133 |
| 30-min | 0.00% | 37% | 166 |
| 60-min | 0.00% | 41% | 181 |
| to close | +0.03% | 52% | 229 |
| Middle 50% of MBCN reactions | -0.35% to +0.49% |
|---|---|
| Median reaction (30-min) | 0.00% |
| Measured reactions | 252 |
Half of all Middlefield Banc Corp. news events land between -0.35% and +0.49% at 30 minutes.
Reaction stats as of 2026-08-31. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
Email me when MBCN moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to MBCN's baseline. Nothing else.
Recent MBCN events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 15-12G MIDDLEFIELD BANC CORP | SEC filing · Form 15-12G | SEC EDGAR | — | — | |
| Form S-8 POS MIDDLEFIELD BANC CORP | SEC filing · Form S-8 | SEC EDGAR | — | — | |
| Form S-3DPOS MIDDLEFIELD BANC CORP | SEC filing · Form S-3DPOS | SEC EDGAR | — | — | |
| Form 8-K MIDDLEFIELD BANC CORP For: Feb 23 | SEC filing · Form 8-K | SEC EDGAR | -0.12% | -0.32% | |
| Form 8-K MIDDLEFIELD BANC CORP For: Feb 09 | SEC filing · Form 8-K | SEC EDGAR | -0.49% | +0.72% | |
| Form 8-K MIDDLEFIELD BANC CORP For: Feb 10 | SEC filing · Form 8-K | SEC EDGAR | +0.37% | -0.52% | |
| Middlefield Banc Corp. Reports 2025 Twelve-Month Financial Results | Press release | GlobeNewswire | +1.62% | -0.35% | |
| Form 8-K MIDDLEFIELD BANC CORP For: Feb 09 | SEC filing · Form 8-K | SEC EDGAR | +0.37% | -0.52% | |
| Middlefield Banc Corp. Announces 2026 First-Quarter Cash Dividend Payment | Press release | GlobeNewswire | +0.37% | -0.52% | |
| Form 8-K MIDDLEFIELD BANC CORP For: Feb 05 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +1.60% | |
| Independent Proxy Advisory Firm ISS Recommends Shareholders Vote “FOR” Middlefield Banc Corp. Proposed Merger with Farmers National Banc Corp. | Press release | GlobeNewswire | — | +2.41% | |
| Form 8-K MIDDLEFIELD BANC CORP For: Jan 12 | SEC filing · Form 8-K | SEC EDGAR | +1.10% | +1.30% | |
| Halper Sadeh LLC Encourages SEE, MBCN, GDOT, SEMR Shareholders to Contact the Firm to Discuss Their Rights | Press release | PR Newswire | — | -0.79% | |
| Halper Sadeh LLC Encourages AWK, MBCN, VECO, PCH Shareholders to Contact the Firm to Discuss Their Rights | Press release | PR Newswire | +0.66% | +0.26% | |
| Halper Sadeh LLC Encourages WTRG, MBCN, WAT Shareholders to Contact the Firm to Discuss Their Rights | Press release | PR Newswire | — | +0.26% | |
| Form DEFM14A MIDDLEFIELD BANC CORP | SEC filing · Form DEFM14A | SEC EDGAR | +0.00% | -2.90% | |
| Form 8-K MIDDLEFIELD BANC CORP For: Dec 08 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -1.73% | |
| Halper Sadeh LLC Encourages BLFY, GIFI, MBCN, JAMF Shareholders to Contact the Firm to Discuss Their Rights | Press release | PR Newswire | — | -1.72% | |
| Form 8-K MIDDLEFIELD BANC CORP For: Nov 17 | SEC filing · Form 8-K | SEC EDGAR | — | -2.16% | |
| Middlefield Banc Corp. Announces 2025 Fourth-Quarter Cash Dividend Payment | Press release | GlobeNewswire | — | -2.16% | |
| Form 10-Q MIDDLEFIELD BANC CORP For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | +1.68% | — | |
| Form 8-K MIDDLEFIELD BANC CORP For: Oct 22 | SEC filing · Form 8-K | SEC EDGAR | — | +2.59% | |
| Form 8-K MIDDLEFIELD BANC CORP For: Oct 22 | SEC filing · Form 8-K | SEC EDGAR | +0.15% | -1.32% | |
| MBCN Stock Alert: Halper Sadeh LLC Is Investigating Whether the Sale of Middlefield Banc Corp. Is Fair to Shareholders | Press release | Business Wire | +0.15% | -1.32% | |
| Middlefield Banc Corp. Reports 2025 Nine-Month Financial Results | Press release | GlobeNewswire | +0.15% | -1.32% | |
| Middlefield Banc Corp. Appoints Tim Oyster VP, Western Ohio Commercial Relationship Manager | Press release | GlobeNewswire | — | +2.94% | |
| Form 10-Q MIDDLEFIELD BANC CORP For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.00% | +4.19% | |
| Form 8-K MIDDLEFIELD BANC CORP For: Aug 11 | SEC filing · Form 8-K | SEC EDGAR | — | — | |
| Middlefield Banc Corp. Announces 2025 Third-Quarter Cash Dividend Payment | Press release | GlobeNewswire | — | — | |
| Middlefield Banc Corp. Announces Additions to Banking Team | Press release | GlobeNewswire | — | -1.98% | |
| Form 8-K MIDDLEFIELD BANC CORP For: Jul 28 | SEC filing · Form 8-K | SEC EDGAR | — | +1.77% | |
| Form 8-K MIDDLEFIELD BANC CORP For: Jul 22 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -1.97% | |
| Middlefield Banc Corp. Reports 2025 Six-Month Financial Results | Press release | GlobeNewswire | +0.00% | -1.97% | |
| Form 8-K MIDDLEFIELD BANC CORP For: Jun 02 | SEC filing · Form 8-K | SEC EDGAR | — | +0.24% | |
| Middlefield Banc Corp. Announces Retirement of Darryl E. Mast from Board of Directors | Press release | GlobeNewswire | — | +1.00% | |
| Form 8-K MIDDLEFIELD BANC CORP For: May 14 | SEC filing · Form 8-K | SEC EDGAR | — | +2.02% | |
| Form 10-Q MIDDLEFIELD BANC CORP For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +0.00% | -0.07% | |
| Form 8-K MIDDLEFIELD BANC CORP For: May 12 | SEC filing · Form 8-K | SEC EDGAR | — | -0.23% | |
| Middlefield Banc Corp. Announces 2025 Second-Quarter Cash Dividend Payment | Press release | GlobeNewswire | — | -0.23% | |
| Form 8-K MIDDLEFIELD BANC CORP For: Apr 24 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +0.86% | |
| Middlefield Banc Corp. Reports 2025 Three-Month Financial Results | Press release | GlobeNewswire | +0.00% | +0.86% | |
| Form ARS MIDDLEFIELD BANC CORP For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | +0.00% | +14.24% | |
| Form DEF 14A MIDDLEFIELD BANC CORP For: May 14 | SEC filing · Form DEF | SEC EDGAR | +0.00% | +14.24% | |
| Form 10-K MIDDLEFIELD BANC CORP For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +1.63% | -0.75% | |
| Form 8-K MIDDLEFIELD BANC CORP For: Feb 28 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +0.38% | |
| Form 8-K MIDDLEFIELD BANC CORP For: Feb 10 | SEC filing · Form 8-K | SEC EDGAR | — | -2.83% | |
| Middlefield Banc Corp. Announces a 5% Increase in the 2025 First-Quarter Cash Dividend Payment | Press release | GlobeNewswire | — | -2.83% | |
| Form 8-K MIDDLEFIELD BANC CORP For: Jan 27 | SEC filing · Form 8-K | SEC EDGAR | +2.63% | +7.32% | |
| Form 8-K MIDDLEFIELD BANC CORP For: Jan 23 | SEC filing · Form 8-K | SEC EDGAR | — | +0.08% | |
| Middlefield Banc Corp. Reports 2024 Twelve-Month Financial Results | Press release | GlobeNewswire | — | +0.08% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the MBCN section they belong to.
Where else MBCN is measured.
MBCN earnings → · Analyst actions → · SEC filings →
Other Financial Services names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| First Business Financial Services, Inc. (FBIZ) | 252 | 0.00% | 43% |
| LAURENTIAN BK CDA QUE (LRCDF) | 252 | 0.00% | 22% |
| Donnelley Financial Solutions, Inc. (DFIN) | 251 | -0.08% | 45% |
| First United Corporation (FUNC) | 251 | +0.16% | 58% |
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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How the numbers are made.
How is Middlefield Banc Corp.'s median reaction calculated?
Every labeled MBCN 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 252 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. 37% of MBCN'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 2026-08-31.
Does MBCN'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.