---
schema_version: "secwatch.filing_event.v1"
accession: "0000357173-26-000050"
form_type: "8-K"
ticker: "OSBC"
cik: "0000357173"
company_name: "OLD SECOND BANCORP INC"
filed_at: "2026-10-01T15:00:10+00:00"
generated_at: "2026-10-12T14:19:06.699429+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.15
calibrated_materiality_score: 0.15
confidence: "high"
source: SEC EDGAR
---

# Old Second Bancorp sets Q3 2026 earnings release for Oct 21; call Oct 22

## Summary
- Old Second Bancorp (Nasdaq: OSBC) will release third-quarter 2026 financial results after the market closes on October 21, 2026.
- Earnings call is scheduled for Thursday, October 22, 2026 at 10:00 a.m. Eastern Time (9:00 a.m. Central Time) via live webcast.
- Webcast replay will be posted in the Events section of investors.oldsecond.com and remain available for up to one year.
- No quarterly figures, guidance or other operating results were disclosed; the notice is purely a scheduling announcement.
- Filing signed by Bradley S. Adams, Executive Vice President, Chief Operating Officer and Chief Financial Officer.

## SEC filing metadata
- accession: 0000357173-26-000050
- form_type: 8-K
- ticker: OSBC
- cik: 0000357173
- company_name: OLD SECOND BANCORP INC
- filed_at: 2026-10-01T15:00:10+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.15
- calibrated_materiality_score: 0.15
- confidence: high
- EDGAR index: https://www.sec.gov/Archives/edgar/data/357173/000035717326000050/0000357173-26-000050-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/357173/000035717326000050/osbc-20261001x8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000357173-26-000050
- JSON: https://secwatch.observer/filing/0000357173-26-000050.json
- Plain text: https://secwatch.observer/filing/0000357173-26-000050.txt

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