OSBC - CIK 0000357173
OLD SECOND BANCORP INC has filed 1,839 documents with the SEC between 1995 and 2026. The most frequent type is insider trade (1,008 filings), alongside the regular cadence of annual reports, quarterly reports, and event disclosures every public company must make. Use the filters to focus on one filing type, or flip the sort to trace the company's history from its earliest paperwork.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.
| Filing | Type | Filed | Period covered |
|---|---|---|---|
| Proxy statement | DEF 14A | 2003-03-13 | 2003-04-15 |
| Insider trade | 4 | 2003-02-25 | 2003-02-25 |
| Insider sale notice | 144 | 2003-02-25 | - |
| Insider trade | 4 | 2003-02-18 | 2003-02-14 |
| Passive ownership stake (update) | SC 13G/A | 2003-02-13 | - |
| Insider trade | 4 | 2003-02-04 | 2003-02-03 |
| Insider sale notice | 144 | 2003-01-24 | - |
| Major company event | 8-K | 2003-01-17 | 2003-01-17 |
| Insider trade | 4 | 2003-01-03 | 2002-12-31 |
| Insider trade | 4 | 2003-01-03 | 2002-12-31 |
| Insider trade | 4 | 2003-01-03 | 2002-12-31 |
| Insider trade | 4 | 2003-01-03 | 2002-12-31 |
| Insider trade | 4 | 2003-01-03 | 2002-12-31 |
| Insider trade | 4 | 2002-12-20 | 2002-12-20 |
| Insider trade | 4 | 2002-12-18 | 2002-12-17 |
| Insider trade | 4 | 2002-12-18 | 2002-12-17 |
| Insider trade | 4 | 2002-11-19 | 2002-06-19 |
| Quarterly report | 10-Q | 2002-11-14 | 2002-09-30 |
| Insider trade | 4 | 2002-10-02 | 2002-09-30 |
| Insider trade | 4 | 2002-10-02 | 2002-09-30 |
| Insider trade | 4 | 2002-10-02 | 2002-09-30 |
| Insider trade | 4 | 2002-10-02 | 2002-09-30 |
| Insider trade | 4 | 2002-10-02 | 2002-09-30 |
| 8-A12G | - | 2002-09-20 | - |
| Major company event | 8-K | 2002-09-20 | 2002-09-17 |
| Major company event | 8-K | 2002-09-18 | 2002-09-18 |
| Quarterly report | 10-Q | 2002-08-09 | 2002-06-30 |
| Major company event | 8-K | 2002-07-12 | 2002-07-12 |
| Employee plan annual report | 11-K | 2002-06-28 | 2001-12-31 |
| Major company event | 8-K | 2002-06-19 | 2002-06-19 |
| Major company event | 8-K | 2002-05-22 | 2002-05-22 |
| Quarterly report | 10-Q | 2002-05-14 | 2002-03-31 |
| 10-K405 | - | 2002-03-22 | 2001-12-31 |
| Proxy statement | DEF 14A | 2002-03-12 | 2002-04-16 |
| Passive ownership stake | SC 13G | 2002-02-14 | - |
| Major company event | 8-K | 2001-12-28 | 2001-12-28 |
| Quarterly report | 10-Q | 2001-11-13 | 2001-09-30 |
| Quarterly report | 10-Q | 2001-08-13 | 2001-06-30 |
| Employee plan annual report | 11-K | 2001-06-27 | 2000-12-31 |
| Quarterly report | 10-Q | 2001-05-09 | 2001-03-31 |
| 10-K405 | - | 2001-03-28 | 2000-12-31 |
| Proxy statement | DEF 14A | 2001-03-13 | 2001-04-17 |
| Passive ownership stake | SC 13G | 2001-02-12 | - |
| Quarterly report | 10-Q | 2000-11-13 | 2000-09-30 |
| Passive ownership stake | SC 13G | 2000-09-08 | - |
| Quarterly report | 10-Q | 2000-08-14 | 2000-06-30 |
| Employee stock plan | S-8 | 2000-06-09 | - |
| Quarterly report | 10-Q | 2000-05-11 | 2000-03-31 |
| 10-K405 | - | 2000-03-29 | 1999-12-31 |
| Activist ownership stake | SC 13D | 2000-03-22 | - |