David B. Ramaker is President at CHEMICAL FINANCIAL CORP (CHFC). They have made 13 open-market trades across 2 companies since 2009, most recently 2026-05-22.
CIK 0001213672
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.
13 open-market purchases totalling $641K since 2009, never a sale. Across 13 scored buys the stock is down 1.5% at ninety days, and 2.7 points behind the S&P over the same stretch.
13 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 15% | 15% | 8% |
| Avg Move | -6.0% | -2.1% | -1.5% |
| Alpha | -1.9% | -1.9% | -2.7% |
| Scored | 13 | 13 | 13 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| MBWM | BUY | 2025-08-18 | 2025-08-19 | $46.71 | $70K | +4.2% | +2.2% | -7.1% |
| MBWM | BUY | 2023-04-21 | 2023-04-24 | $28.98 | $87K | -12.2% | -4.1% | +21.3% |
| MBWM | BUY | 2023-01-20 | 2023-01-20 | $33.33 | $50K | +3.1% | +4.1% | -14.2% |
| MBWM | BUY | 2022-08-18 | 2022-08-22 | $36.58 | $110K | -7.9% | -11.2% | -1.2% |
| CHFC | BUY | 2012-11-20 | 2012-11-21 | $21.52 | $91K | -7.3% | -2.0% | -2.0% |
| CHFC | BUY | 2011-08-09 | 2011-08-11 | $17.09 | $44K | -7.3% | -2.0% | -2.0% |
| CHFC | BUY | 2011-05-09 | 2011-05-09 | $19.61 | $25K | -7.3% | -2.0% | -2.0% |
| CHFC | BUY | 2011-05-04 | 2011-05-04 | $20.22 | $25K | -7.3% | -2.0% | -2.0% |
| CHFC | BUY | 2011-04-26 | 2011-04-27 | $20.05 | $75K | -7.3% | -2.0% | -2.0% |
| CHFC | BUY | 2011-02-15 | 2011-02-15 | $20.21 | $30K | -7.3% | -2.0% | -2.0% |
| CHFC | BUY | 2010-08-23 | 2010-08-24 | $19.83 | $15K | -7.3% | -2.0% | -2.0% |
| CHFC | BUY | 2009-02-27 | 2009-03-02 | $19.60 | $5K | -7.3% | -2.0% | -2.0% |
| CHFC | BUY | 2009-02-13 | 2009-02-17 | $23.49 | $15K | -7.3% | -2.0% | -2.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.