OLD SECOND BANCORP INC (OSBC) Form 8-K Material Events
OLD SECOND BANCORP INC (OSBC) is a publicly traded company on the Nasdaq, categorized under SIC 6022 (State Commercial Banks). Access real-time SEC filings, 10-K annual reports, 10-Q quarterlies, 8-K current reports, PCAOB auditor history, and executive compensation disclosures.
Ticker: OSBC
CIK: 357173
Exchange: Nasdaq
SIC 6022: State Commercial Banks
Fiscal Year End: 12/31
State: DE
Independent PCAOB Auditor
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Audit Firm
Plante & Moran, PLLC
Auditor SinceSince 12/31/2016 12:00:00 AM
Lead Engagement PartnerKyle Manny
Audit LocationChicago, Illinois, United States
Latest SEC EDGAR Filings
Showing 10-K, 10-Q, 8-K, Form 4, and other SEC submissions| Form | Filing Date | Reporting Period | Description | Accession Number | Actions |
|---|---|---|---|---|---|
| SCHEDULE 13G | 2026-10-08 | — | SCHEDULE 13G Filing | 0000354204-26-001084 | View SEC Doc Filr Page |
| 4 | 2026-10-01 | 2026-09-30 | 4 Filing | 0001314109-26-000016 | View SEC Doc Filr Page |
| 4 | 2026-10-01 | 2026-09-30 | 4 Filing | 0001598917-26-000012 | View SEC Doc Filr Page |
| 4 | 2026-10-01 | 2026-09-30 | 4 Filing | 0001840027-26-000014 | View SEC Doc Filr Page |
| 4 | 2026-10-01 | 2026-09-30 | 4 Filing | 0001673321-26-000014 | View SEC Doc Filr Page |
| 4 | 2026-10-01 | 2026-09-30 | 4 Filing | 0001184766-26-000024 | View SEC Doc Filr Page |
| 8-K | 2026-10-01 | 2026-10-01 | 8-K | 0000357173-26-000050 | View SEC Doc Filr Page |
| 4 | 2026-09-23 | 2026-09-23 | 4 Filing | 0001184766-26-000022 | View SEC Doc Filr Page |
| 144 | 2026-09-23 | — | 144 Filing | 0001949846-26-000595 | View SEC Doc Filr Page |
| 4 | 2026-09-11 | 2026-09-04 | 4 Filing | 0001184766-26-000020 | View SEC Doc Filr Page |
| 4 | 2026-09-08 | 2026-09-08 | 4 Filing | 0001184764-26-000008 | View SEC Doc Filr Page |
| 4/A | 2026-09-08 | 2026-09-03 | 4/A Filing | 0001184764-26-000006 | View SEC Doc Filr Page |
| 144 | 2026-09-08 | — | 144 Filing | 0001969223-26-001003 | View SEC Doc Filr Page |
| 4 | 2026-09-03 | 2026-09-03 | 4 Filing | 0001184764-26-000004 | View SEC Doc Filr Page |
| 4 | 2026-09-03 | 2026-09-02 | 4 Filing | 0002074132-26-000008 | View SEC Doc Filr Page |
| 144 | 2026-09-02 | — | 144 Filing | 0001949846-26-000561 | View SEC Doc Filr Page |
| S-3ASR | 2026-08-18 | — | S-3ASR | 0000357173-26-000048 | View SEC Doc Filr Page |
| 4 | 2026-08-13 | 2026-08-12 | 4 Filing | 0001314109-26-000014 | View SEC Doc Filr Page |
| 4 | 2026-08-12 | 2026-08-11 | 4 Filing | 0001314109-26-000012 | View SEC Doc Filr Page |
| 4 | 2026-08-11 | 2026-08-10 | 4 Filing | 0001829064-26-000008 | View SEC Doc Filr Page |
| 144 | 2026-08-11 | — | 144 Filing | 0001949846-26-000491 | View SEC Doc Filr Page |
| 10-Q | 2026-08-06 | 2026-06-30 | 10-Q | 0000357173-26-000045 | View SEC Doc Filr Page |
| 8-K | 2026-07-22 | 2026-07-22 | 8-K | 0000357173-26-000042 | View SEC Doc Filr Page |
| 8-K | 2026-07-21 | 2026-07-21 | 8-K | 0000357173-26-000039 | View SEC Doc Filr Page |
| 8-K | 2026-07-08 | 2026-07-07 | 8-K | 0000357173-26-000037 | View SEC Doc Filr Page |