OLD SECOND BANCORP INC — 11-K Filings
25 11-K filings on record
This page lists all 11-K filings submitted to the SEC by OLD SECOND BANCORP INC (OSBC), sorted by most recent first. Each row links to the full filing on EdgarLookup. OLD SECOND BANCORP INC has filed 25 11-K documents with the SEC since 2015. To view all SEC filings by OLD SECOND BANCORP INC, see the full filings list.
All
10-K
10-K/A
10-K405
10-Q
10-Q/A
11-K
144
144/A
15-12G
25-NSE
3
4
4/A
424B1
424B2
424B3
424B4
424B5
425
5
8-A12G
8-A12G/A
8-K
8-K/A
ARS
CORRESP
D
DEF 14A
DEFA14A
EFFECT
FWP
NT 11-K
PRE 14A
S-1
S-1/A
S-3
S-3/A
S-4
S-4/A
S-8
SC 13D
SC 13G
SC 13G/A
SC TO-I
SC TO-I/A
SCHEDULE 13G/A
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| 11-K | 11-K | 0000357173-25-000063 | Jun 30, 2025 | Dec 31, 2024 |
| 11-K | 11-K | 0000357173-24-000045 | Jun 28, 2024 | Dec 31, 2023 |
| 11-K | 11-K | 0000357173-23-000035 | Jun 30, 2023 | Dec 31, 2022 |
| 11-K | 11-K | 0000357173-22-000053 | Jun 30, 2022 | Dec 31, 2021 |
| 11-K | 11-K | 0000357173-21-000042 | Jun 25, 2021 | Dec 31, 2020 |
| 11-K | 11-K | 0000357173-20-000033 | Jun 25, 2020 | Dec 31, 2019 |
| 11-K | 11-K | 0000357173-19-000041 | Jun 28, 2019 | — |
| 11-K | 11-K | 0000357173-18-000038 | Jun 22, 2018 | — |
| 11-K | 11-K | 0000357173-17-000036 | Jun 26, 2017 | — |
| 11-K | 11-K | 0000357173-16-000093 | Jun 22, 2016 | Dec 31, 2015 |
| 11-K | 11-K | 0000357173-15-000035 | Jun 19, 2015 | Dec 31, 2014 |
| 11-K | 11-K | 0001104659-14-047786 | Jun 23, 2014 | Dec 31, 2013 |
| 11-K | 11-K | 0001104659-13-050395 | Jun 20, 2013 | Dec 31, 2012 |
| 11-K | 11-K | 0001104659-12-046585 | Jun 28, 2012 | Dec 31, 2011 |
| 11-K | 11-K | 0001104659-11-036831 | Jun 28, 2011 | Dec 31, 2010 |
| 11-K | 11-K | 0001104659-10-035728 | Jun 28, 2010 | Dec 31, 2009 |
| 11-K | 11-K | 0001104659-09-040573 | Jun 29, 2009 | Dec 31, 2008 |
| 11-K | 11-K | 0001104659-08-043933 | Jul 3, 2008 | Dec 31, 2007 |
| 11-K | 11-K | 0001104659-07-053887 | Jul 13, 2007 | Dec 31, 2006 |
| 11-K | ANNUAL REPORT OF EMPLOYEE STOCK PURCHASE, SAVINGS PLANS | 0001104659-06-044599 | Jun 29, 2006 | Dec 31, 2005 |
| 11-K | 11-K | 0001104659-05-030445 | Jun 29, 2005 | Dec 31, 2004 |
| 11-K | 11-K | 0001104659-04-017911 | Jun 25, 2004 | Dec 31, 2003 |
| 11-K | 11-K | 0001104659-03-013571 | Jun 30, 2003 | Dec 31, 2002 |
| 11-K | 11-K | 0001104659-02-002938 | Jun 28, 2002 | Dec 31, 2001 |
| 11-K | — | 0001104659-01-500978 | Jun 27, 2001 | Dec 31, 2000 |