OLD SECOND BANCORP INC

OSBC · Nasdaq · SIC 6022: State Commercial Banks
271
SEC Filings

Business Summary

PARTI Item 1. Busines s General Old Second Bancorp,Inc. is a corporation organized under the laws of the State of Delaware in 1981 that serves as the bank holding company for its wholly-owned subsidiary bank, Old Second National Bank. Old Second National Bank (the Bank) is a national banking association headquartered in Aurora, Illinois, that operates through 55 banking centers located in Cook, DeKalb, DuPage, Kane, Kendall, LaSalle and Will counties in Illinois. In this report, unless the conte...

Next Earnings

Q2 FY2026 — expected 2026-09-16

Key Facts from Earnings Calls

TypeSubjectDetailQuarter
topic_mentionOSBCdiscussed_in_filing Cybersecurity
topic_mentionOSBCdiscussed_in_filing Cybersecurity

Annual Reports (10-K)

FiledPeriodAccessionSourceFull Text
2026-02-262025-12-310001104659-26-020393EDGAR117K words
2025-03-062024-12-310001558370-25-002383EDGAR—
2024-03-072023-12-310001558370-24-002688EDGAR—
2023-03-092022-12-310001558370-23-003286EDGAR—
2022-03-102021-12-310001558370-22-003314EDGAR—
2021-03-082020-12-310000357173-21-000014EDGAR—
2020-03-062019-12-310000357173-20-000013EDGAR—
2019-03-072018-12-310000357173-19-000012EDGAR—
2018-03-132017-12-310000357173-18-000015EDGAR—
2017-03-132016-12-310000357173-17-000012EDGAR—

Quarterly Reports (10-Q)

FiledPeriodAccessionSourceFull Text
2025-11-062025-09-300000357173-25-000091EDGAR67K words
2025-08-072025-06-300000357173-25-000076EDGAR—
2025-05-092025-03-310000357173-25-000035EDGAR—
2024-11-072024-09-300000357173-24-000075EDGAR—
2024-08-082024-06-300000357173-24-000059EDGAR—
2024-05-092024-03-310000357173-24-000035EDGAR—
2023-11-082023-09-300000357173-23-000085EDGAR—
2023-08-082023-06-300001558370-23-013905EDGAR—
2023-05-092023-03-310001558370-23-008865EDGAR—
2022-11-082022-09-300001558370-22-016816EDGAR—
2022-08-082022-06-300001558370-22-012593EDGAR—
2022-05-092022-03-310001558370-22-007797EDGAR—

Recent Current Reports (8-K)

FiledAccessionSourceFull Text
2026-04-010000357173-26-000016EDGAR1K words
2026-03-040000357173-26-000014EDGAR—
2026-01-290000357173-26-000012EDGAR—
2026-01-210000357173-26-000010EDGAR—
2026-01-200000357173-26-000007EDGAR—
2026-01-020000357173-26-000005EDGAR—
2025-10-220000357173-25-000088EDGAR—
2025-10-210000357173-25-000086EDGAR—
2025-10-010000357173-25-000084EDGAR—
2025-09-150000357173-25-000079EDGAR—

271 total filings indexed. 239 additional filings (S-1, DEF 14A, etc.) View all (JSON) · SEC EDGAR

Sector Peers

SRCE — 1ST SOURCE CORP ACNB — ACNB CORP ASB — ASSOCIATED BANC-CORP AUBN — AUBURN NATIONAL BANCORPORATION, INC ALLY — Ally Financial Inc. AMAL — Amalgamated Financial Corp. ABCB — Ameris Bancorp AUB — Atlantic Union Bankshares Corp

Company Identity

CIK0000357173
TickerOSBC
ExchangeNasdaq
SIC6022: State Commercial Banks
IncorporatedDE

Get More Data

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JSON Profile Stock Quote AI Readiness Report
Origin Provenance
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content hash: 5707fad76d1026c9730905d01dbf0ff1d6ea9ba6dd5778d2e74c95a76c158c4b
signed: 2026-04-13T04:46:45.818Z
sources: 22 verified data leaves
chain: SEC.gov PEM → origin.rootz.global extraction → this page
verify: sha256(content_hash + parent + timestamp) = leaf