---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-158945"
form_type: "8-K"
ticker: "FBIZ"
cik: "0001521951"
company_name: "FIRST BUSINESS FINANCIAL SERVICES, INC."
filed_at: "2026-04-16T23:59:59+00:00"
generated_at: "2026-05-15T05:46:33.081021+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# First Business Financial appoints David R. Seiler as CEO effective May 3, 2026

## Summary
- Seiler, previously President & COO, succeeds Corey A. Chambas who announced retirement in May 2025.
- Seiler also appointed to Board as Class III director until 2028 annual meeting.
- Employment agreement provides base salary of at least $600,000, annual cash incentive, and RSU grant of $215,000 vesting over 5 years.
- Severance includes 2x base salary plus prorated target bonus and 18 months COBRA on qualifying termination without cause or for good reason.
- Agreement effective May 3, 2026, initial term of five years with automatic one-year renewals.

## SEC filing metadata
- accession: 0001193125-26-158945
- form_type: 8-K
- ticker: FBIZ
- cik: 0001521951
- company_name: FIRST BUSINESS FINANCIAL SERVICES, INC.
- filed_at: 2026-04-16T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1521951/000119312526158945/0001193125-26-158945-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1521951/000119312526158945/fbiz-20260415.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-158945
- JSON: https://secwatch.observer/filing/0001193125-26-158945.json
- Plain text: https://secwatch.observer/filing/0001193125-26-158945.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.