First Business CEO Corey Chambas to retire May 2, 2026; COO Dave Seiler named successor

FIRST BUSINESS FINANCIAL SERVICES, INC.

Corey Chambas to retire as CEO effective May 2, 2026; will remain on boards.
David R. Seiler, currently President and COO, appointed CEO effective same date.
Chambas has been CEO since Jan 2006; joined company in 1993.
Seiler joined in Apr 2016; previously MD at BMO Harris Bank.
Board Chairman Jerry Kilcoyne praises Chambas' leadership and transition plan.

item 5.02 item 8.01 item 9.01

Executive movements

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Departed

Corey Chambas

Chief Executive Officer

FBIZ · FIRST BUSINESS FINANCIAL SERVICES, INC.

Effective: 2026-05-02
Successor: David R. Seiler
Filed: May 5, 2025, 7:59 PM ET

On May 2, 2025, Corey Chambas, Chief Executive Officer of First Business Financial Services, Inc. (the “Company”), notified the Company of his intention to retire from his role effective May 2, 2026.

Key facts

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Executive change SEC 8-K Item 5.02 confidence 0.95

Corey Chambas retired as Chief Executive Officer at FIRST BUSINESS FINANCIAL SERVICES, INC..

Action: retired
Role: Chief Executive Officer

Exact text from the filing

On May 2, 2025, Corey Chambas, Chief Executive Officer of First Business Financial Services, Inc. (the “Company”), notified the Company of his intention to retire from his role effective May 2, 2026.

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FIRST BUSINESS FINANCIAL SERVICES, INC. filing history →

Source: SEC EDGAR

accession 0000950170-25-063201

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