First Business Financial Services's top three insider shareholders as of July 24, 2026 are Corey A Chambas (Ceo, 122.08K shares), Corey A Chambas (Ceo, 116.58K shares), Gerald L Kilcoyne (Director, 65.98K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Corey A Chambas | Ceo | 122,080 | 0 | 14 Apr, 2026 |
| Mark J Meloy | Evp | 54,981 | 0 | 15 Apr, 2025 |
| Mark D Bugher | - | 2,270 | 0 | 18 May, 2023 |
| Carol P Sanders | - | 2,925 | 0 | 17 Dec, 2024 |
| Edward G Jr Sloane | Chief Financial Officer | 19,012 | 0 | 20 Feb, 2023 |
| Barbara Mccarty Conley | General Counsel | 28,364 | 0 | 19 Apr, 2023 |
| Jodi A Chandler | Chief Human Resources Officer | 23,225 | 0 | 14 Apr, 2026 |
| Gerald L Kilcoyne | - | 65,981 | 0 | 20 May, 2025 |
| John J Harris | - | 13,925 | 0 | 20 May, 2024 |
| Jason R Graham | - | 3,220 | 0 | 01 Aug, 2025 |
| Carla C Chavarria | - | 7,736 | 0 | 20 May, 2025 |
| Daniel Ovokaitys | Chief Information Officer | 10,668 | 0 | 14 Apr, 2026 |
| David R. Seiler | President And Coo | 37,372 | 0 | 14 Apr, 2026 |
| William Kent Lorenz | - | 8,961 | 0 | 20 May, 2025 |
| Daniel P. Olszewski | - | 26,695 | 0 | 20 May, 2025 |
| Laurie S. Benson | - | 7,971 | 0 | 20 May, 2025 |
| Ralph R. Kauten | - | 29,756 | 0 | 01 Aug, 2025 |
| Bradley A Quade | Chief Credit Officer | 16,582 | 0 | 14 Apr, 2026 |
| Brian D. Spielmann | Cfo | 7,311 | 0 | 14 Apr, 2026 |
| James Edward Hartlieb | Presceo First Business Bank | 31,637 | 0 | 14 Apr, 2026 |
| Laura M. Garcia | Chief Risk Officer | 4,842 | 0 | 14 Apr, 2026 |
| Kevin D Crampton | Chief Accounting Officer | 2,401 | 0 | 18 Feb, 2026 |
| Niamh M. Kristufek | President Specialty Finance | 3,336 | 0 | 18 Feb, 2026 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 10 Apr, 2026 | Jodi A Chandler | Common Stock | A | 2,080 | $0.00 | 24,059 | D | A |
| 10 Apr, 2026 | David R. Seiler | Common Stock | A | 4,780 | $0.00 | 39,284 | D | A |
| 10 Apr, 2026 | Corey A Chambas | Common Stock | A | 10,370 | $0.00 | 126,955 | D | A |
| 10 Apr, 2026 | Bradley A Quade | Common Stock | A | 2,740 | $0.00 | 17,678 | D | A |
| 10 Apr, 2026 | David R. Seiler | Common Stock | A | 4,780 | $0.00 | 39,284 | D | A |
| 10 Apr, 2026 | David R. Seiler | Common Stock | A | 4,780 | $0.00 | 39,284 | D | A |
| 10 Apr, 2026 | Daniel Ovokaitys | Common Stock | A | 2,430 | $0.00 | 11,811 | D | A |
| 10 Apr, 2026 | Laura M. Garcia | Common Stock | A | 2,500 | $0.00 | 5,950 | D | A |
| 10 Apr, 2026 | Bradley A Quade | Common Stock | A | 2,740 | $0.00 | 17,678 | D | A |
| 10 Apr, 2026 | James Edward Hartlieb | Common Stock | A | 2,730 | $0.00 | 32,803 | D | A |
| 10 Apr, 2026 | Bradley A Quade | Common Stock | A | 2,740 | $0.00 | 17,678 | D | A |
| 10 Apr, 2026 | James Edward Hartlieb | Common Stock | A | 2,730 | $0.00 | 32,803 | D | A |
| 10 Apr, 2026 | Brian D. Spielmann | Common Stock | A | 3,190 | $0.00 | 8,812 | D | A |
| 10 Apr, 2026 | James Edward Hartlieb | Common Stock | A | 2,730 | $0.00 | 32,803 | D | A |
| 10 Apr, 2026 | Brian D. Spielmann | Common Stock | A | 3,190 | $0.00 | 8,812 | D | A |
| 10 Apr, 2026 | Brian D. Spielmann | Common Stock | A | 3,190 | $0.00 | 8,812 | D | A |
| 10 Apr, 2026 | Brian D. Spielmann | Common Stock | D | 1,501 | $58.60 | 7,311 | D | F |
| 10 Apr, 2026 | Bradley A Quade | Common Stock | D | 1,096 | $58.60 | 16,582 | D | F |
| 10 Apr, 2026 | David R. Seiler | Common Stock | D | 1,912 | $58.60 | 37,372 | D | F |
| 10 Apr, 2026 | James Edward Hartlieb | Common Stock | D | 1,039 | $58.60 | 31,764 | D | F |