---
schema_version: "secwatch.filing_event.v1"
accession: "0000357173-26-000037"
form_type: "8-K"
ticker: "OSBC"
cik: "0000357173"
company_name: "OLD SECOND BANCORP INC"
filed_at: "2026-07-08T15:00:06+00:00"
generated_at: "2026-07-08T15:01:04.676269+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.2
calibrated_materiality_score: 0.2
confidence: "high"
source: SEC EDGAR
---

# Director John Williams, Jr. resigns from Old Second Bancorp board upon reaching age 73

## Summary
- Resignation effective July 7, 2026, per Director Resignation Policy requiring resignation at age 73.
- Resignation not due to any disagreement with the company.
- Board will not fill vacancy; board size reduced by one member.
- Williams served on Risk and Insurance Committee since 2021.

## SEC filing metadata
- accession: 0000357173-26-000037
- form_type: 8-K
- ticker: OSBC
- cik: 0000357173
- company_name: OLD SECOND BANCORP INC
- filed_at: 2026-07-08T15:00:06+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.2
- calibrated_materiality_score: 0.2
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/357173/000035717326000037/0000357173-26-000037-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/357173/000035717326000037/osbc-20260707x8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000357173-26-000037
- JSON: https://secwatch.observer/filing/0000357173-26-000037.json
- Plain text: https://secwatch.observer/filing/0000357173-26-000037.txt

## Key facts
- Executive change
  John Williams, Jr. resigned as Director at OLD SECOND BANCORP INC.
  - Action: resigned
  - Role: Director
  source text: Effective July 7, 2026, John Williams, Jr., a member of the Board of Directors (the “Board”) of Old Second Bancorp, Inc. (the “Company”), resigned from the Board.
  evidence_url: https://www.sec.gov/Archives/edgar/data/357173/000035717326000037/0000357173-26-000037-index.htm

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