Darryl E. Mast is Director at MIDDLEFIELD BANC CORP (MBCN). They have made 10 open-market trades across 1 company since 2013, most recently 2025-01-01.
CIK 0001202590
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.
10 open-market purchases totalling $428K since 2013, never a sale. Across 10 scored buys the stock is up 7.2% at ninety days, and 2.8 points ahead of the S&P over the same stretch.
10 scored purchases · one row per filing · discretionary only
| Ticker | Shares | Value |
|---|---|---|
| MBCN | 5,681 | $191K |
Shares reported on the most recent Form 4, priced at the 2025-01-02 close.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 70% | 50% | 70% |
| Avg Move | +1.4% | +1.2% | +7.2% |
| Alpha | +0.4% | -0.3% | +2.8% |
| Scored | 10 | 10 | 10 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| MBCN | BUY | 2021-08-09 | 2021-08-19 | $24.00 | $7K | +1.2% | -0.1% | +16.6% |
| MBCN | BUY | 2021-01-28 | 2021-01-29 | $19.13 | $12K | +7.9% | +5.5% | +11.7% |
| MBCN | BUY | 2020-12-11 | 2020-12-14 | $21.24 | $42K | +6.8% | +8.9% | +22.7% |
| MBCN | BUY | 2019-05-15 | 2019-05-17 | $39.65 | $40K | +0.3% | -0.2% | +17.0% |
| MBCN | BUY | 2019-02-21 | 2019-03-22 | $42.79 | $43K | -4.2% | -3.8% | -5.9% |
| MBCN | BUY | 2018-10-23 | 2018-10-25 | $46.58 | $70K | -1.3% | -2.2% | -4.0% |
| MBCN | BUY | 2017-08-02 | 2017-08-03 | $45.42 | $109K | +0.5% | +5.3% | +5.1% |
| MBCN | BUY | 2017-06-14 | 2017-06-16 | $52.42 | $52K | -1.0% | -4.0% | -14.0% |
| MBCN | BUY | 2014-04-30 | 2017-04-04 | $27.28 | $27K | +2.0% | +1.3% | +11.5% |
| MBCN | BUY | 2013-12-05 | 2017-04-04 | $25.51 | $26K | +2.0% | +1.3% | +11.5% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.