---
schema_version: "secwatch.filing_event.v1"
accession: "0000357173-24-000078"
form_type: "8-K"
ticker: "OSBC"
cik: "0000357173"
company_name: "OLD SECOND BANCORP INC"
filed_at: "2024-12-09T23:59:59+00:00"
generated_at: "2026-05-29T05:54:28.844025+00:00"
event_type: "m_and_a"
sentiment: "positive"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Old Second completes five-branch acquisition from First Merchants Bank

## Summary
- Closed purchase of five Illinois branches from First Merchants Bank effective Dec 6, 2024.
- Assumed ~$274.2M in deposits and purchased ~$7.5M in loans, plus other branch assets.
- Acquired branches will open as Old Second on Monday, December 9, 2024.
- CEO James Eccher said the deal adds meaningfully to the company's Southeast Chicago network.

## SEC filing metadata
- accession: 0000357173-24-000078
- form_type: 8-K
- ticker: OSBC
- cik: 0000357173
- company_name: OLD SECOND BANCORP INC
- filed_at: 2024-12-09T23:59:59+00:00
- event_type: m_and_a
- sentiment: positive
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/357173/000035717324000078/0000357173-24-000078-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/357173/000035717324000078/tmb-20241206x8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000357173-24-000078
- JSON: https://secwatch.observer/filing/0000357173-24-000078.json
- Plain text: https://secwatch.observer/filing/0000357173-24-000078.txt

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