Old Second National Bank

Phone

877-866-0202 From the lender's website, retrieved November 9, 2026. Source page

Website

www.oldsecond.comFrom the FDIC record, November 9, 2026.

Commercial lending page

oldsecond.comFrom the lender's website, retrieved November 11, 2026.

Address

37 S River St, Aurora, IL 60506FDIC institution record, Nov 9, 2026

Regulator record

FDIC BankFind

Recorded lending. Two or more public files show loans this lender made.

What changed. Old Second National Bank originated 31 multifamily loans in 2025, versus 19 in 2024. HMDA, 2025

Includes loans from acquiring Evergreen Bank Group in the window, so growth reflects the acquisition as well as new lending.

Reference only: $551M of 1-4 family residential loans, which call reports cannot split owner-occupied from investor. Excluded from the totals above.

How these public files were tied to this lender. HMDA: its legal entity identifier (LEI). SBA 7(a) loans: its FDIC certificate number. SBA 504 first liens: its name and state.

Programs on record: Federal Home Loan Bank member, Chicago district (FHFA).

• Old Second National Bank reported making 737 small business loans totaling $221,506,000 in 2024, in its Community Reinvestment Act filing (FFIEC, calendar 2024).
• By size when made: 174 of $100,000 or less, 235 over $100,000 up to $250,000, 328 over $250,000 up to $1 million.
• 155 of them, totaling $36,387,000, went to businesses with revenue of $1 million or less.
• Old Second National Bank reported making 16 small farm loans totaling $3,822,000 in 2024, in its Community Reinvestment Act filing (FFIEC, calendar 2024).
• By size when made: 4 of $100,000 or less, 7 over $100,000 up to $250,000, 5 over $250,000 up to $500,000.
• 8 of them, totaling $1,664,000, went to farms with revenue of $1 million or less.

In this filing a small business loan is a commercial and industrial loan, or a loan secured by nonfarm nonresidential property, of $1 million or less when it was made. Multifamily loans are not included.

Only banks with about $1.6 billion or more in assets must file this data. The cutoff is set each year; it was $1.564 billion for 2024. A bank that is not listed here can still make small business loans.

How this filing was tied to this bank: OCC charter via FFIEC POR + transmittal RSSD.

• Old Second National Bank reported commitments to fund construction loans that had not been drawn at June 30, 2026: $0 for 1-4 family residential construction and $28,134,000 for commercial real estate, other construction and land development (FFIEC Call Report). A commitment is an agreement to fund a loan if it is drawn. It is not a loan made.
• Undrawn commitments to commercial and industrial borrowers at June 30, 2026: $273,347,000. These are credit lines not yet used.

FFIEC Call Report, Jun 30, 2026

Loans held on the report date, grouped by the amount when each loan was made. Not loans made in a period.

• Old Second National Bank has 54 offices in 7 counties and 1 state (FDIC Summary of Deposits, June 30, 2026): 53 full service and 1 limited service.

Loan production offices are not in this file. A bank with no office here can still lend here.

Our calculation: construction, multifamily and non-owner-occupied nonfarm nonresidential loans, divided by tier 1 capital plus the allowance for loan losses. It is not the test in the 2006 interagency guidance on commercial real estate concentrations (December 12, 2006; OCC Bulletin 2006-46, Federal Reserve SR 07-1). That guidance measures against total risk-based capital, also counts loans that finance commercial real estate but are not secured by real estate, and looks more closely when construction and land loans reach 100% of that capital, or commercial real estate loans reach 300% of it and have grown 50% or more in the prior 36 months. This figure uses a different capital base, leaves out the unsecured loans and applies no growth condition. The guidance sets no limit on lending. Not a rating, and not a statement about safety or deposits.

Compare these lenders side by side

Regulator

Office of the Comptroller of the Currency

FDIC certificate

3603

RSSD

936136

LEI

B94HV8SXGDD3J5XESU08

The Lender Report ID

lr_000285

FDIC classifies this bank as

Commercial Lending Specialization

Ownership

Stock

Head office metro area

Chicago-Naperville-Elgin, IL-IN-WI

FDIC institution record, Nov 9, 2026 The classification is FDIC's description of the balance sheet. It is not a statement about what the bank will lend on.

Sources

• FDIC institution record, November 9, 2026
• FDIC office list, October 28, 2026
• FDIC call report, June 30, 2026
• FDIC call report, June 30, 2025
• HMDA, 2025
• SBA FOIA, September 30, 2026
• FFIEC Call Report, June 30, 2026
• FDIC call reports, June 30, 2026
• FFIEC CRA disclosure data, 2024
• FDIC Summary of Deposits, June 30, 2026

Figures come from public records and show the source and date beside them. Public records can be late, incomplete or wrong. A past loan does not mean a lender will make the same kind of loan today. Confirm anything important with the lender.

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