PARTI Item 1. Busines s General Old Second Bancorp,Inc. is a corporation organized under the laws of the State of Delaware in 1981 that serves as the bank holding company for its wholly-owned subsidiary bank, Old Second National Bank. Old Second National Bank (the Bank) is a national banking association headquartered in Aurora, Illinois, that operates through 55 banking centers located in Cook, DeKalb, DuPage, Kane, Kendall, LaSalle and Will counties in Illinois. In this report, unless the conte...
Q2 FY2026 — expected 2026-09-16
| Filed | Period | Accession | Source | Full Text |
|---|---|---|---|---|
| 2026-02-26 | 2025-12-31 | 0001104659-26-020393 | EDGAR | 117K words |
| 2025-03-06 | 2024-12-31 | 0001558370-25-002383 | EDGAR | — |
| 2024-03-07 | 2023-12-31 | 0001558370-24-002688 | EDGAR | — |
| 2023-03-09 | 2022-12-31 | 0001558370-23-003286 | EDGAR | — |
| 2022-03-10 | 2021-12-31 | 0001558370-22-003314 | EDGAR | — |
| 2021-03-08 | 2020-12-31 | 0000357173-21-000014 | EDGAR | — |
| 2020-03-06 | 2019-12-31 | 0000357173-20-000013 | EDGAR | — |
| 2019-03-07 | 2018-12-31 | 0000357173-19-000012 | EDGAR | — |
| 2018-03-13 | 2017-12-31 | 0000357173-18-000015 | EDGAR | — |
| 2017-03-13 | 2016-12-31 | 0000357173-17-000012 | EDGAR | — |
| Filed | Period | Accession | Source | Full Text |
|---|---|---|---|---|
| 2026-08-06 | 2026-06-30 | 0000357173-26-000045 | EDGAR | — |
| 2025-11-06 | 2025-09-30 | 0000357173-25-000091 | EDGAR | 67K words |
| 2025-08-07 | 2025-06-30 | 0000357173-25-000076 | EDGAR | — |
| 2025-05-09 | 2025-03-31 | 0000357173-25-000035 | EDGAR | — |
| 2024-11-07 | 2024-09-30 | 0000357173-24-000075 | EDGAR | — |
| 2024-08-08 | 2024-06-30 | 0000357173-24-000059 | EDGAR | — |
| 2024-05-09 | 2024-03-31 | 0000357173-24-000035 | EDGAR | — |
| 2023-11-08 | 2023-09-30 | 0000357173-23-000085 | EDGAR | — |
| 2023-08-08 | 2023-06-30 | 0001558370-23-013905 | EDGAR | — |
| 2023-05-09 | 2023-03-31 | 0001558370-23-008865 | EDGAR | — |
| 2022-11-08 | 2022-09-30 | 0001558370-22-016816 | EDGAR | — |
| 2022-08-08 | 2022-06-30 | 0001558370-22-012593 | EDGAR | — |
| Filed | Accession | Source | Full Text |
|---|---|---|---|
| 2026-07-22 | 0000357173-26-000042 | EDGAR | — |
| 2026-07-21 | 0000357173-26-000039 | EDGAR | — |
| 2026-04-01 | 0000357173-26-000016 | EDGAR | 1K words |
| 2026-03-04 | 0000357173-26-000014 | EDGAR | — |
| 2026-01-29 | 0000357173-26-000012 | EDGAR | — |
| 2026-01-21 | 0000357173-26-000010 | EDGAR | — |
| 2026-01-20 | 0000357173-26-000007 | EDGAR | — |
| 2026-01-02 | 0000357173-26-000005 | EDGAR | — |
| 2025-10-22 | 0000357173-25-000088 | EDGAR | — |
| 2025-10-21 | 0000357173-25-000086 | EDGAR | — |
274 total filings indexed. 242 additional filings (S-1, DEF 14A, etc.) View all (JSON) · SEC EDGAR
| CIK | 0000357173 |
| Ticker | OSBC |
| Exchange | Nasdaq |
| SIC | 6022: State Commercial Banks |
| Incorporated | DE |
| Website | https://www.oldsecond.com |
| Listed | 1993-11-16 |
This is a static snapshot. For live, structured JSON with cryptographic provenance chain:
MCP (recommended for AI): claude mcp add origin --transport http https://origin.rootz.global/mcp
Try it — paste this into your AI:
Works in ChatGPT, Claude, Gemini, or any AI. Free, structured, cryptographically signed — ~500 tokens vs 130,000 scraping an IR site.
claude mcp add origin --transport http https://origin.rootz.global/mcpGET https://origin.rootz.global/api/company/OSBC (~200 tokens, structured JSON with cryptographic provenance)