William J. Skidmore is Director at MIDDLEFIELD BANC CORP (MBCN). They have made 9 open-market trades across 1 company since 2008, most recently 2026-03-02.
CIK 0001393152
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
8 open-market purchases totalling $100K since 2008, against 1 sale. Across 8 scored buys the stock is up 2.3% at ninety days, and 1.7 points behind the S&P over the same stretch.
8 scored purchases · one row per filing · discretionary only
| Ticker | Shares | Value |
|---|---|---|
| MBCN | 20,742 | $698K |
Shares reported on the most recent Form 4, priced at the 2026-02-25 close.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 75% | 13% | 38% |
| Avg Move | +1.8% | -0.1% | +2.3% |
| Alpha | +4.3% | -1.5% | -1.7% |
| Scored | 8 | 8 | 8 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| MBCN | BUY | 2023-04-27 | 2023-04-27 | $27.57 | $11K | -12.2% | -8.2% | +6.9% |
| MBCN | BUY | 2020-04-29 | 2020-04-30 | $17.15 | $10K | +6.7% | +7.6% | +7.3% |
| MBCN | SELL | 2018-08-02 | 2018-08-03 | $50.45 | $35K | +1.6% | -3.2% | -6.6% |
| MBCN | BUY | 2016-05-13 | 2016-05-16 | $33.00 | $25K | -1.6% | +0.0% | +4.3% |
| MBCN | BUY | 2011-01-31 | 2011-02-02 | $16.00 | $20K | +4.3% | +0.0% | +0.0% |
| MBCN | BUY | 2010-02-12 | 2010-02-17 | $22.00 | $8K | +4.3% | +0.0% | +0.0% |
| MBCN | BUY | 2009-07-28 | 2009-08-07 | $18.90 | $9K | +4.3% | +0.0% | +0.0% |
| MBCN | BUY | 2009-04-27 | 2009-04-27 | $22.25 | $7K | +4.3% | +0.0% | +0.0% |
| MBCN | BUY | 2008-03-10 | 2008-03-11 | $37.00 | $10K | +4.3% | +0.0% | +0.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.