Corey A. Chambas is CEO & President at FIRST BUSINESS FINANCIAL SERVICES, INC. (FBIZ). They have made 21 open-market trades across 1 company since 2006, most recently 2026-05-16.
CIK 0001311295
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.
17 open-market purchases totalling $87K since 2006, against 4 sales. Across 17 scored buys the stock is up 1.8% at ninety days, and 1.5 points ahead of the S&P over the same stretch.
17 scored purchases · one row per filing · discretionary only
| Ticker | Shares | Value |
|---|---|---|
| FBIZ | 122,790 | $8.7M |
Shares reported on the most recent Form 4, priced at the 2026-05-19 close.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 100% | 100% | 100% |
| Avg Move | +1.4% | +1.8% | +1.8% |
| Alpha | +7.2% | +1.5% | +1.5% |
| Scored | 17 | 17 | 17 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| FBIZ | SELL | 2024-11-07 | 2024-11-07 | $48.81 | $2.0M | +4.5% | +3.0% | +14.6% |
| FBIZ | SELL | 2017-05-02 | 2017-05-03 | $25.12 | $558K | -4.5% | -8.2% | -14.7% |
| FBIZ | SELL | 2017-03-07 | 2017-03-08 | $25.05 | $682K | +1.1% | +0.0% | -10.3% |
| FBIZ | SELL | 2016-06-08 | 2016-06-09 | $24.50 | $333K | -0.8% | -4.4% | -4.0% |
| FBIZ | BUY | 2010-06-29 | 2010-06-30 | $9.70 | $5K | +1.4% | +1.8% | +1.8% |
| FBIZ | BUY | 2010-06-11 | 2010-06-15 | $10.09 | $5K | +1.4% | +1.8% | +1.8% |
| FBIZ | BUY | 2010-03-29 | 2010-03-30 | $10.00 | $5K | +1.4% | +1.8% | +1.8% |
| FBIZ | BUY | 2009-12-11 | 2009-12-14 | $9.50 | $5K | +1.4% | +1.8% | +1.8% |
| FBIZ | BUY | 2009-09-30 | 2009-10-01 | $10.00 | $2K | +1.4% | +1.8% | +1.8% |
| FBIZ | BUY | 2009-09-11 | 2009-09-14 | $9.75 | $975 | +1.4% | +1.8% | +1.8% |
| FBIZ | BUY | 2009-03-19 | 2009-03-23 | $11.23 | $2K | +1.4% | +1.8% | +1.8% |
| FBIZ | BUY | 2008-08-15 | 2008-08-19 | $16.75 | $6K | +1.4% | +1.8% | +1.8% |
| FBIZ | BUY | 2008-08-11 | 2008-08-13 | $16.50 | $776 | +1.4% | +1.8% | +1.8% |
| FBIZ | BUY | 2008-06-13 | 2008-06-16 | $16.25 | $3K | +1.4% | +1.8% | +1.8% |
| FBIZ | BUY | 2007-12-31 | 2008-01-02 | $17.98 | $11K | +1.4% | +1.8% | +1.8% |
| FBIZ | BUY | 2007-06-25 | 2007-06-26 | $19.90 | $15K | +1.4% | +1.8% | +1.8% |
| FBIZ | BUY | 2007-05-18 | 2007-05-21 | $21.00 | $1K | +1.4% | +1.8% | +1.8% |
| FBIZ | BUY | 2007-03-21 | 2007-03-23 | $22.00 | $11K | +1.4% | +1.8% | +1.8% |
| FBIZ | BUY | 2006-12-26 | 2006-12-28 | $22.50 | $3K | +1.4% | +1.8% | +1.8% |
| FBIZ | BUY | 2006-12-21 | 2006-12-26 | $22.75 | $9K | +1.4% | +1.8% | +1.8% |
| FBIZ | BUY | 2006-12-14 | 2006-12-15 | $23.00 | $2K | +1.4% | +1.8% | +1.8% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.