Corey A. Chambas
CEO at First Business Financial Services Inc.
Sits on 1 board. Last updated September 28, 2026
Time on boards
- Boards served
- 1
- Current seats
- 1
- Board service
- 4 years
- Director since
- 2023
4 years of board service in total across 1 board, counting each seat separately. Longest: First Business Financial Services Inc., 3 years.
First Business Financial Services Inc.
Director · CEO
Chief executive roles
Dates unknown
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| May 16, 2026 | First Business Financial Services Inc. | Grant or award | +710 | — | — |
| Apr 10, 2026 | First Business Financial Services Inc. | Grant or award | +10,370 | — | — |
| Apr 10, 2026 | First Business Financial Services Inc. | Shares withheld for tax | −4,875 | $58.60 | $285,675 |
| Feb 16, 2026 | First Business Financial Services Inc. | Shares withheld for tax | −1,531 | $58.36 | $89,349 |
| Nov 12, 2025 | First Business Financial Services Inc. | Gift | −200 | — | — |
| Nov 12, 2025 | First Business Financial Services Inc. | Gift | −200 | — | — |
| Apr 11, 2025 | First Business Financial Services Inc. | Grant or award | +10,240 | — | — |
| Apr 11, 2025 | First Business Financial Services Inc. | Shares withheld for tax | −4,814 | $45.04 | $216,823 |
| Feb 16, 2025 | First Business Financial Services Inc. | Grant or award | +2,080 | — | — |
| Feb 16, 2025 | First Business Financial Services Inc. | Shares withheld for tax | −1,740 | $52.76 | $91,802 |
| Nov 7, 2024 | First Business Financial Services Inc. | Open-market sale | −40,000 | $48.81 | $1,952,400 |
| Apr 19, 2024 | First Business Financial Services Inc. | Grant or award | +15,010 | — | — |
| Apr 19, 2024 | First Business Financial Services Inc. | Shares withheld for tax | −7,055 | $34.30 | $241,987 |
| Feb 16, 2024 | First Business Financial Services Inc. | Grant or award | +3,515 | — | — |
| Feb 16, 2024 | First Business Financial Services Inc. | Shares withheld for tax | −1,989 | $36.06 | $71,723 |
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