Listed locations
56
Institution profile
Old Second National Bank
Identity verified through FDIC; additional sources pendingVerification describes the US Mortgage Index public-source matching process. It is not an endorsement or recommendation. Read the methodology
Public-record data only. Not a recommendation, lender endorsement, or rate comparison. Verify current licensing, product availability, and terms independently.
FDIC BankFind baseline
FDIC-reported identity and institutional fields from the public BankFind record. These values are not described as current or real-time.
- Legal name
- Old Second National Bank
- Display name
- Old Second National Bank
- Institution status
- Active
- FDIC insured
- Yes
- FDIC insured since
- January 1, 1934
- Established date
- November 21, 1887
- Charter class
- National bank, member of the Federal Reserve System (FRS)
- Primary federal regulator
- Office of the Comptroller of the Currency
- Headquarters
- Aurora, IL, 60506, United States
- Website
- https://www.oldsecond.com
- FDIC certificate number
- 3603
- Federal Reserve RSSD ID
- 936136
- OCC charter number
- 4596
- Domestic location count
- 59
- Source observed
- August 5, 2026
Regulatory profile
Public FFIEC NIC and CRA records for this institution, presented as source-backed regulatory context rather than a score or recommendation.
Regulatory identity
- Institution status
- ACTIVE
- Primary federal regulator
- OCC
- Institution type
- National Bank
- Primary activity
- NAICS 52211
- FDIC certificate
- 3603
- Federal Reserve RSSD ID
- 936136
- LEI
- B94HV8SXGDD3J5XESU08
- Headquarters
- 37 South River Street, Aurora, IL, 60506, United States
- Primary deposit insurer
- Deposit Insurance Fund (DIF)
- Source observed
- August 19, 2026
Branch network
Showing 1 through 50 of 56 listed locations
Institutional history
11 FFIEC NIC history events
Showing 1 through 11 of 11 history events
| Event date | Event type | Related institution |
|---|---|---|
| July 1, 2025 | Charter Discontinued (Merger or Purchase & Assumption) | — |
| December 1, 2021 | Charter Discontinued (Merger or Purchase & Assumption) | — |
| April 20, 2018 | Charter Discontinued (Merger or Purchase & Assumption) | — |
| February 9, 2008 | Charter Discontinued (Merger or Purchase & Assumption) | — |
| July 1, 2007 | Charter Discontinued (Merger or Purchase & Assumption) | — |
| July 1, 2007 | Charter Discontinued (Merger or Purchase & Assumption) | — |
| January 1, 2007 | Charter Discontinued (Merger or Purchase & Assumption) | OLD SECOND MORTGAGE COMPANY |
| February 25, 2000 | Charter Discontinued (Merger or Purchase & Assumption) | — |
| January 1, 1999 | Charter Discontinued (Merger or Purchase & Assumption) | — |
| January 1, 1999 | Charter Discontinued (Merger or Purchase & Assumption) | — |
| June 13, 1997 | Charter Discontinued (Merger or Purchase & Assumption) | — |
These events are shown as reported by the FFIEC NIC source and are not independent legal conclusions.
FFIEC-reported organizational relationships
5 FFIEC NIC relationship records
Showing 1 through 5 of 5 relationship records
| Relationship | Institution | Type | Location |
|---|---|---|---|
| Direct relationship | COMBINED-AUSTIN, L.L.C. | Domestic Entity Other | Chicago, IL |
| Direct relationship | OLD SECOND AFFORDABLE HOUSING FUND, LLC | Domestic Entity Other | Aurora, IL |
| Direct relationship | RIVER STREET ADVISORS, LLC | Domestic Entity Other | Aurora, IL |
| Direct relationship | STATION I, LLC | Domestic Entity Other | Aurora, IL |
| ROOT_INSTITUTION | OLD SECOND NATIONAL BANK | National Bank | Aurora, IL |
These relationships reflect the FFIEC NIC source display and should not be interpreted as a complete legal ownership analysis.
FFIEC NIC information reflects public regulatory records observed on the displayed source date. Observed dates describe when the public record was reviewed, not a real-time update.
Additional profile fields
Fields below supplement the primary source baseline and are shown only when present on the public profile.
- Entity type
- FDIC-insured national bank