---
schema_version: "secwatch.filing_event.v1"
accession: "0000357173-25-000060"
form_type: "8-K"
ticker: "OSBC"
cik: "0000357173"
company_name: "OLD SECOND BANCORP INC"
filed_at: "2025-06-18T23:59:59+00:00"
generated_at: "2026-05-19T03:49:18.583498+00:00"
event_type: "m_and_a"
sentiment: "positive"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Bancorp Financial shareholders approve merger with Old Second; close set for July 1, 2025

## Summary
- Stockholder approval received on June 18, 2025 for the previously announced merger with Old Second Bancorp.
- Merger was announced on February 25, 2025; closing expected July 1, 2025, subject to customary conditions.
- Old Second is the acquirer in the transaction, which will combine Bancorp Financial with Old Second.

## SEC filing metadata
- accession: 0000357173-25-000060
- form_type: 8-K
- ticker: OSBC
- cik: 0000357173
- company_name: OLD SECOND BANCORP INC
- filed_at: 2025-06-18T23:59:59+00:00
- event_type: m_and_a
- sentiment: positive
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 7.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/357173/000035717325000060/0000357173-25-000060-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/357173/000035717325000060/tmb-20250618x8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000357173-25-000060
- JSON: https://secwatch.observer/filing/0000357173-25-000060.json
- Plain text: https://secwatch.observer/filing/0000357173-25-000060.txt

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