Old Second Bancorp Inc
OSBCNasdaqCIK 357173FinancialsFiscal year ends Dec 31
Reports and events: 419 filings
Newest first, by EDGAR acceptance time (Eastern). Each filing’s page lists its documents on sec.gov and, for 10-K and 10-Q reports, the extracted sections.
What the forms are: 10-K, 10-Q, 8-K, Form 4, DEF 14A, Schedule 13D, Schedule 13G, amendments, accession numbers.
| Filed | Form | What it is | Accession number |
|---|---|---|---|
| 2026-10-2116:05 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000357173-26-000057 |
| 2026-10-2011:00 ET | 8-K | 8.01 Other events | 0000357173-26-000055 |
| 2026-10-1916:15 ET | 8-K | 5.02 Departure or appointment of officers or directors | 0000357173-26-000052 |
| 2026-10-0111:00 ET | 8-K | 8.01 Other events | 0000357173-26-000050 |
| 2026-08-0612:01 ET | 10-Q | Quarterly reportPeriod 2026-06-30 | 0000357173-26-000045 |
| 2026-07-2216:05 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000357173-26-000042 |
| 2026-07-2111:00 ET | 8-K | 8.01 Other events | 0000357173-26-000039 |
| 2026-07-0811:00 ET | 8-K | 5.02 Departure or appointment of officers or directors | 0000357173-26-000037 |
| 2026-07-0111:00 ET | 8-K | 8.01 Other events | 0000357173-26-000035 |
| 2026-06-2511:00 ET | 8-K | 8.01 Other events | 0000357173-26-000030 |
| 2026-06-0911:00 ET | 8-K | 5.02 Departure or appointment of officers or directors | 0000357173-26-000028 |
| 2026-05-2010:30 ET | 8-K | 5.07 Shareholder vote results | 0000357173-26-000026 |
| 2026-05-1909:50 ET | 8-K | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0000357173-26-000024 |
| 2026-05-0715:01 ET | 10-Q | Quarterly reportPeriod 2026-03-31 | 0000357173-26-000022 |
| 2026-04-2216:05 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000357173-26-000020 |
| 2026-04-2110:30 ET | 8-K | 8.01 Other events | 0000357173-26-000018 |
| 2026-04-0611:15 ET | DEF 14A | Proxy statementPeriod 2026-05-19 | 0001104659-26-039829 |
| 2026-04-0111:00 ET | 8-K | 8.01 Other events | 0000357173-26-000016 |
| 2026-03-0411:30 ET | 8-K | 8.01 Other events | 0000357173-26-000014 |
| 2026-02-2614:30 ET | 10-K | Annual reportPeriod 2025-12-31 | 0001104659-26-020393 |
| 2026-01-2912:30 ET | 8-K | 8.01 Other events | 0000357173-26-000012 |
| 2026-01-2116:05 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000357173-26-000010 |
| 2026-01-2011:30 ET | 8-K | 8.01 Other events | 0000357173-26-000007 |
| 2026-01-0214:15 ET | 8-K | 8.01 Other events | 0000357173-26-000005 |
| 2025-11-0616:13 ET | 10-Q | Quarterly reportPeriod 2025-09-30 | 0000357173-25-000091 |
| 2025-10-2216:05 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000357173-25-000088 |
| 2025-10-2110:30 ET | 8-K | 8.01 Other events | 0000357173-25-000086 |
| 2025-10-0111:30 ET | 8-K | 8.01 Other events | 0000357173-25-000084 |
| 2025-09-1716:00 ET | 8-K/A | 9.01 Financial statements and exhibits | 0000357173-25-000082 |
| 2025-09-1511:00 ET | 8-K | 5.02 Departure or appointment of officers or directors | 0000357173-25-000079 |
| 2025-08-0715:55 ET | 10-Q | Quarterly reportPeriod 2025-06-30 | 0000357173-25-000076 |
| 2025-07-2316:05 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000357173-25-000073 |
| 2025-07-1511:00 ET | 8-K | 8.01 Other events | 0000357173-25-000071 |
| 2025-07-0213:00 ET | 8-K | 8.01 Other events | 0000357173-25-000069 |
| 2025-07-0108:00 ET | 8-K | 2.01 Completion of an acquisition or disposition; 5.02 Departure or appointment of officers or directors; 8.01 Other events; 9.01 Financial statements and exhibits | 0000357173-25-000066 |
| 2025-06-1816:06 ET | 8-K | 7.01 Regulation FD disclosure | 0000357173-25-000060 |
| 2025-06-0312:45 ET | 8-K/A | 5.07 Shareholder vote results | 0000357173-25-000055 |
| 2025-05-2811:00 ET | 8-K | 5.03 Amendment to articles or bylaws; 9.01 Financial statements and exhibits | 0000357173-25-000048 |
| 2025-05-2214:45 ET | 8-K | 8.01 Other events; 9.01 Financial statements and exhibits | 0000357173-25-000044 |
| 2025-05-2015:15 ET | 8-K | 5.07 Shareholder vote results | 0000357173-25-000041 |
| 2025-05-2009:50 ET | 8-K | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0000357173-25-000038 |
| 2025-05-0912:00 ET | 10-Q | Quarterly reportPeriod 2025-03-31 | 0000357173-25-000035 |
| 2025-04-2316:05 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000357173-25-000032 |
| 2025-04-1812:00 ET | DEF 14A | Proxy statementPeriod 2025-05-20 | 0001558370-25-005000 |
| 2025-04-1511:30 ET | 8-K | 8.01 Other events | 0000357173-25-000029 |
| 2025-04-0110:30 ET | 8-K | 8.01 Other events | 0000357173-25-000026 |
| 2025-03-0615:46 ET | 10-K | Annual reportPeriod 2024-12-31 | 0001558370-25-002383 |
| 2025-02-2507:00 ET | 8-K | 1.01 Entry into a material agreement; 8.01 Other events; 9.01 Financial statements and exhibits | 0000357173-25-000018 |
| 2025-01-2216:05 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000357173-25-000013 |
| 2025-01-2111:00 ET | 8-K | 8.01 Other events | 0000357173-25-000008 |
Source: SEC EDGAR, the company’s filing index. Last ingested by Listed: Oct 30, 2026, 12:40 ET. Listed shows no prices and gives no investment advice.