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 |
|---|---|---|---|---|
| 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 | — |
| 2022-05-09 | 2022-03-31 | 0001558370-22-007797 | EDGAR | — |
| Filed | Accession | Source | Full Text |
|---|---|---|---|
| 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 | — |
| 2025-10-01 | 0000357173-25-000084 | EDGAR | — |
| 2025-09-15 | 0000357173-25-000079 | EDGAR | — |
271 total filings indexed. 239 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 |
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