Old Second Bancorp OSBC SEC Filings

NASDAQ OSBC
$25.10 +0.02 (+0.08%)
At close: Nov 11, 2026 · 4:00 PM EST
EDGAR Disclosures

SEC Filings

Source SEC EDGAR

Every SEC filing Old Second Bancorp Inc (OSBC) has made, as reported on EDGAR — annual and quarterly reports, current reports, insider transactions and ownership disclosures. Filter by form group, form type or period, and open any filing or its index directly.

Form Type
# Form Type Form Group Accession Date Filing Index
110-QQuarterly & Annual Report0000357173-26-000060Nov 4, 2026 5:01 PM
2SCHEDULE 13GBeneficial Ownership0002100119-26-001679Oct 30, 2026 12:39 PM
34Insider Transaction0001244438-26-000006Oct 21, 2026 1:10 AM
48-KCurrent Report0000357173-26-000057Oct 21, 2026 12:05 AM
54Insider Transaction0001244438-26-000004Oct 21, 2026 11:57 PM
64Insider Transaction0001895832-26-000004Oct 21, 2026 11:54 PM
74Insider Transaction0001655300-26-000004Oct 20, 2026 9:55 PM
84Insider Transaction0001184764-26-000010Oct 20, 2026 9:49 PM
94Insider Transaction0001829064-26-000010Oct 20, 2026 9:47 PM
104Insider Transaction0001896747-26-000004Oct 20, 2026 9:45 PM
114Insider Transaction0001225765-26-000003Oct 20, 2026 9:42 PM
124Insider Transaction0001296986-26-000004Oct 20, 2026 9:40 PM
138-KCurrent Report0000357173-26-000055Oct 20, 2026 7:00 PM
144Insider Transaction0001191044-26-000004Oct 20, 2026 6:11 PM
158-KCurrent Report0000357173-26-000052Oct 19, 2026 12:15 AM
16SCHEDULE 13GBeneficial Ownership Report0000354204-26-001084Oct 8, 2026 10:25 PM
174Insider Transaction0001314109-26-000016Oct 1, 2026 10:27 PM
184Insider Transaction0001598917-26-000012Oct 1, 2026 10:24 PM
194Insider Transaction0001840027-26-000014Oct 1, 2026 10:21 PM
204Insider Transaction0001673321-26-000014Oct 1, 2026 10:17 PM
214Insider Transaction0001184766-26-000024Oct 1, 2026 10:12 PM
228-KCurrent Report0000357173-26-000050Oct 1, 2026 7:00 PM
234Insider Transaction0001184766-26-000022Sep 23, 2026 10:34 PM
24144Insider Transaction0001949846-26-000595Sep 23, 2026 4:23 PM
254Insider Transaction0001184766-26-000020Sep 11, 2026 3:50 PM
264Insider Transaction0001184764-26-000008Sep 8, 2026 9:17 PM
274Insider Transaction0001184764-26-000006Sep 8, 2026 9:09 PM
28144Insider Transaction0001969223-26-001003Sep 8, 2026 7:21 PM
294Insider Transaction0001184764-26-000004Sep 3, 2026 9:40 PM
304Insider Transaction0002074132-26-000008Sep 3, 2026 9:33 PM
31144Insider Transaction0001949846-26-000561Sep 2, 2026 8:00 PM
32S-3ASROthers0000357173-26-000048Aug 18, 2026 7:45 PM
334Insider Transaction0001314109-26-000014Aug 13, 2026 2:47 PM
344Insider Transaction0001314109-26-000012Aug 12, 2026 8:52 PM
354Insider Transaction0001829064-26-000008Aug 11, 2026 4:47 PM
36144Insider Transaction0001949846-26-000491Aug 11, 2026 2:51 PM
3710-QQuarterly & Annual Report0000357173-26-000045Aug 6, 2026 4:01 PM
388-KCurrent Report0000357173-26-000042Jul 22, 2026 8:05 PM
398-KCurrent Report0000357173-26-000039Jul 21, 2026 3:00 PM
408-KCurrent Report0000357173-26-000037Jul 8, 2026 3:00 PM
414Insider Transaction0001598917-26-000010Jul 2, 2026 2:29 PM
424Insider Transaction0001184766-26-000018Jul 2, 2026 2:22 PM
434Insider Transaction0001673321-26-000012Jul 2, 2026 2:15 PM
444Insider Transaction0001314109-26-000010Jul 2, 2026 2:06 PM
454Insider Transaction0001840027-26-000012Jul 2, 2026 1:55 PM
468-KCurrent Report0000357173-26-000035Jul 1, 2026 3:00 PM
4711-KOthers0000357173-26-000033Jun 29, 2026 8:55 PM
488-KCurrent Report0000357173-26-000030Jun 25, 2026 3:00 PM
498-KCurrent Report0000357173-26-000028Jun 9, 2026 3:00 PM
504Insider Transaction0001184766-26-000016May 26, 2026 8:53 PM
...

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