---
schema_version: "secwatch.filing_event.v1"
accession: "0000357173-21-000063"
form_type: "8-K"
ticker: "OSBC"
cik: "0000357173"
company_name: "OLD SECOND BANCORP INC"
filed_at: "2021-08-17T23:59:59+00:00"
generated_at: "2026-06-29T09:41:02.316634+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# Old Second Bancorp appoints Dennis Klaeser to board, increasing size to 14

## Summary
- Board increased to 14 directors; Klaeser fills the newly created seat effective immediately.
- Klaeser most recently served as CFO of TCF Financial Corporation from August 2016 to April 2020.
- He also held CFO roles at Talmer Bancorp and PrivateBancorp, and was a senior Midwest bank analyst at Raymond James.
- Awarded 1,500 time-based restricted stock units that cliff vest on the third anniversary of the grant date.
- Appointed to the Audit Committee and Risk Committee; classified as an independent director.

## SEC filing metadata
- accession: 0000357173-21-000063
- form_type: 8-K
- ticker: OSBC
- cik: 0000357173
- company_name: OLD SECOND BANCORP INC
- filed_at: 2021-08-17T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/357173/000035717321000063/0000357173-21-000063-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/357173/000035717321000063/osbc-20210817x8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000357173-21-000063
- JSON: https://secwatch.observer/filing/0000357173-21-000063.json
- Plain text: https://secwatch.observer/filing/0000357173-21-000063.txt

## Key facts
- Executive change
  Dennis Klaeser was appointed as Director at OLD SECOND BANCORP INC.
  - Action: appointed
  - Role: Director
  source text: the Board increased its size to 14 directors and appointed Dennis Klaeser to fill the newly-created seat, effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/357173/000035717321000063/0000357173-21-000063-index.htm

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