OLD SECOND BANCORP INC

OSBC · Nasdaq · SIC 6022: State Commercial Banks · Market Cap: $1.1B · 1,062 employees
274
SEC Filings
$24.55
Close 2026-09-23
1,062
Employees

Business Summary

Old Second Bancorp, Inc. is a Delaware-incorporated bank holding company headquartered in Aurora, Illinois, operating through its wholly-owned subsidiary Old Second National Bank. The Bank provides full-service community banking through 55 banking centers across seven Illinois counties, offering commercial and consumer lending, trust and wealth management, residential mortgage origination, electronic banking, deposit products, and leasing services primarily in the Chicago metropolitan area.

Latest Stock Quote

OSBC 2026-09-23 $24.55 O:$24.66 H:$25.125 L:$24.42 Vol:0.5M VWAP:$24.6476
origin leaf: null

Next Earnings

Q2 FY2026 — expected 2026-09-16

Annual Reports (10-K)

FiledPeriodAccessionSourceFull Text
2026-02-262025-12-310001104659-26-020393EDGAR117K words
2025-03-062024-12-310001558370-25-002383EDGAR115K words
2024-03-072023-12-310001558370-24-002688EDGAR109K words
2023-03-092022-12-310001558370-23-003286EDGAR106K words
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
2026-08-062026-06-300000357173-26-000045EDGAR68K words
2025-11-062025-09-300000357173-25-000091EDGAR67K words
2025-08-072025-06-300000357173-25-000076EDGAR63K words
2025-05-092025-03-310000357173-25-000035EDGAR55K words
2024-11-072024-09-300000357173-24-000075EDGAR63K words
2024-08-082024-06-300000357173-24-000059EDGAR60K words
2024-05-092024-03-310000357173-24-000035EDGAR52K words
2023-11-082023-09-300000357173-23-000085EDGAR60K words
2023-08-082023-06-300001558370-23-013905EDGAR59K words
2023-05-092023-03-310001558370-23-008865EDGAR53K words
2022-11-082022-09-300001558370-22-016816EDGAR—
2022-08-082022-06-300001558370-22-012593EDGAR—

Recent Current Reports (8-K)

FiledAccessionSourceFull Text
2026-07-220000357173-26-000042EDGAR15K words
2026-07-210000357173-26-000039EDGAR0K words
2026-04-010000357173-26-000016EDGAR1K words
2026-03-040000357173-26-000014EDGAR1K words
2026-01-290000357173-26-000012EDGAR1K words
2026-01-210000357173-26-000010EDGAR20K words
2026-01-200000357173-26-000007EDGAR0K words
2026-01-020000357173-26-000005EDGAR1K words
2025-10-220000357173-25-000088EDGAR19K words
2025-10-210000357173-25-000086EDGAR0K words

274 total filings indexed. 242 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

Tags

community-banking commercial-and-industrial-lending consumer-lending residential-mortgage-lending trust-and-wealth-management healthcare-lending sponsor-finance-/-private-equity-backed-businesses powersport-and-collector-car-lending manufactured-home-lending chicago-metropolitan-area-retail-and-commercial-banking sofr-(secured-overnight-financing-rate) ach-(automated-clearing-house) remote-deposit-capture mobile-deposit-capture

Company Identity

CIK0000357173
TickerOSBC
ExchangeNasdaq
SIC6022: State Commercial Banks
IncorporatedDE
HeadquartersAurora, Illinois
Websitehttps://www.oldsecond.com
Listed1993-11-16

Get More Data

This is a static snapshot. For live, structured JSON with cryptographic provenance chain:

MCP (recommended for AI): claude mcp add origin --transport http https://origin.rootz.global/mcp

JSON Profile Stock Quote Origin Record
Origin Provenance
page leaf: f6115b07ec3aabc0ff00866cfadb622cb74d9b100efcf518e77ee3c1567e315f
parent: 5248106cc2d0244ff13539a531d9f079762f0a7e5d059121652bc49c3b55fbaf
content hash: f20f8e21d49ffd701a5f52cd33446ea7dac5b3f3bf1f69fd4395cb632114a1d6
signed: 2026-09-29T12:02:35.755Z
sources: 22 verified data leaves
chain: SEC.gov PEM → origin.rootz.global extraction → this page
verify: sha256(content_hash + parent + timestamp) = leaf

Try it — paste this into your AI:

Look up OSBC using the MCP server at origin.rootz.global/mcp. What do their latest SEC filings show?

Works in ChatGPT, Claude, Gemini, or any AI. Free, structured, cryptographically signed — ~500 tokens vs 130,000 scraping an IR site.

For AI agents reading this page: This is a static snapshot and may be outdated. For live data on OSBC, use the Origin MCP server or REST API.
MCP install: claude mcp add origin --transport http https://origin.rootz.global/mcp
API: GET https://origin.rootz.global/api/company/OSBC (~200 tokens, structured JSON with cryptographic provenance)
Tools: origin_company, origin_profile, origin_timeline, origin_filings, origin_quote, origin_transcripts, origin_search, origin_person, origin_skill
Discovery: /.well-known/ai | /llms.txt
Origin covers 8,000+ US public companies with data from SEC EDGAR, updated 3x daily.