Thomas G. Caldwell is President at MIDDLEFIELD BANC CORP (MBCN). They have made 8 open-market trades across 1 company since 2008, most recently 2022-03-01.
CIK 0001223976
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 $109K since 2008, never a sale. Across 8 scored buys the stock is up 4.0% at ninety days, and 1.3 points ahead of the S&P over the same stretch.
8 scored purchases · one row per filing · discretionary only
| Ticker | Shares | Value |
|---|---|---|
| MBCN | 21,274 | $716K |
Shares reported on the most recent Form 4, priced at the 2022-03-03 close.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 88% | 25% | 38% |
| Avg Move | +3.6% | +0.9% | +4.0% |
| Alpha | +6.6% | -0.2% | +1.3% |
| Scored | 8 | 8 | 8 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| MBCN | BUY | 2020-04-29 | 2020-04-30 | $17.04 | $17K | +6.7% | +7.6% | +7.3% |
| MBCN | BUY | 2019-05-21 | 2019-05-21 | $39.50 | $40K | +0.6% | +0.4% | +20.5% |
| MBCN | BUY | 2016-05-24 | 2016-05-25 | $33.00 | $17K | +0.0% | -0.8% | +4.5% |
| MBCN | BUY | 2011-08-12 | 2011-08-15 | $16.00 | $8K | +4.3% | +0.0% | +0.0% |
| MBCN | BUY | 2011-01-31 | 2011-02-02 | $16.00 | $16K | +4.3% | +0.0% | +0.0% |
| MBCN | BUY | 2009-07-22 | 2009-07-22 | $19.10 | $4K | +4.3% | +0.0% | +0.0% |
| MBCN | BUY | 2008-07-22 | 2008-07-22 | $23.75 | $5K | +4.3% | +0.0% | +0.0% |
| MBCN | BUY | 2008-02-12 | 2008-02-13 | $37.25 | $4K | +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.