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Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0001104659-12-018477
Filing Date
2012-03-15
Accepted
2012-03-15 12:30:54
Documents
20
Period of Report
2011-12-31

Document Format Files

Seq Description Document Type Size
1 10-K a11-31870_110k.htm 10-K 4674740
2 EX-21.1 a11-31870_1ex21d1.htm EX-21.1 26303
3 EX-23.1 a11-31870_1ex23d1.htm EX-23.1 7187
4 EX-31.1 a11-31870_1ex31d1.htm EX-31.1 13303
5 EX-31.2 a11-31870_1ex31d2.htm EX-31.2 12814
6 EX-32.1 a11-31870_1ex32d1.htm EX-32.1 5189
7 EX-32.2 a11-31870_1ex32d2.htm EX-32.2 4958
8 EX-99.1 a11-31870_1ex99d1.htm EX-99.1 22457
9 EX-99.2 a11-31870_1ex99d2.htm EX-99.2 22656
16 GRAPHIC g318701kki001.jpg GRAPHIC 7651
17 GRAPHIC g318701kki002.jpg GRAPHIC 2877
18 GRAPHIC g318701ba41i001.jpg GRAPHIC 7850
19 GRAPHIC g318701ba41i002.jpg GRAPHIC 2883
20 GRAPHIC g318701ba13i001.jpg GRAPHIC 24104
  Complete submission text file 0001104659-12-018477.txt   16587122

Data Files

Seq Description Document Type Size
10 XBRL INSTANCE DOCUMENT osbc-20111231.xml EX-101.INS 3100360
11 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT osbc-20111231.xsd EX-101.SCH 28296
12 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT osbc-20111231_cal.xml EX-101.CAL 81183
13 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT osbc-20111231_def.xml EX-101.DEF 129526
14 XBRL TAXONOMY EXTENSION LABELS LINKBASE DOCUMENT osbc-20111231_lab.xml EX-101.LAB 436264
15 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT osbc-20111231_pre.xml EX-101.PRE 201945
Mailing Address 37 SOUTH RIVER STREET AURORA IL 60507
Business Address 37 S RIVER ST AURORA IL 60507 7088920202
OLD SECOND BANCORP INC (Filer) CIK: 0000357173 (see all company filings)

IRS No.: 363143493 | State of Incorp.: DE | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 000-10537 | Film No.: 12693067
SIC: 6022 State Commercial Banks