Old Second National Bank
Aurora, IL FDIC 3603 $5B-$10B
Quarter Ended
Q2'26
Data as of June 30, 2026
Quarterly Snapshot
Metric Q2'26 YoY Δ Q2'25
Profitability
Return on Assets (%) ▲ 1.69% +0.07 1.61%
Return on Equity (%) ▼ 12.59% -0.52 13.11%
Net Interest Margin (%) ▲ 5.26% +0.31 4.95%
Efficiency Ratio (%) ▲ 49.49% -4.72 54.22%
Pre-Provision Profit ($M) ▲ $48 +13.47 $35
Cost of Funds (%) ▼ 0.99% +0.27 0.71%
Balance Sheet
Total Assets ($M) ▲ $6,861 +1161.96 $5,699
Gross Loans ($M) ▲ $5,248 +1246.32 $4,002
Loan Growth YoY (%) ▲ 94.71% +13.41 81.30%
Total Deposits ($M) ▲ $5,467 +597.75 $4,869
Shareholders Equity ($M) ▲ $925 +197.09 $728
Tang. Book Value ($M) ▲ $765 +159.60 $605
TBV excl. AOCI ($M)** ▲ $817 +152.72 $664
Loan / Deposit Ratio (%) ▲ 94.71% +13.41 81.30%
Credit Quality
NPA / Total Assets (%) ▼ 0.83% +0.15 0.68%
Allowance / Loans (%) — 1.34% 0.27% 1.07%
Net Charge-Off Ratio (%) ▼ 1.08% +0.27 0.81%
Capital
Tier 1 Capital Ratio (%) ▼ 13.72% -0.31 14.02%
Noninterest income ($13.25M) is materially above the typical range relative to net interest income. This may include one-time items. Efficiency ratio may not reflect recurring earnings power.
** TBV excl. AOCI adds back unrealised losses on AFS securities to show capital excluding mark-to-market interest rate impact.
8-Quarter Trend
Metric Q3'24 Q4'24 Q1'25 Q2'25 Q3'25 Q4'25 Q1'26 Q2'26
▁▁▃▄▇█▇█ Net Interest Margin (%) 4.69% 4.73% 4.90% 4.95% 5.14% 5.22% 5.19% 5.26%
█▇▅▇▁▄▇█ Return on Assets (%) 1.68% 1.63% 1.54% 1.61% 1.32% 1.46% 1.61% 1.69%
▂▄█▆█▇▁▁ Efficiency Ratio (%) 50.9% 52.3% 55.8% 54.2% 56.4% 55.2% 49.6% 49.5%
▆▄▁▁█▇▅▅ Cost of Funds (%) 1.04% 0.91% 0.69% 0.71% 1.17% 1.07% 0.96% 0.99%
█▅▁▁▃▃█▄ NPA / Assets (%) 1.07% 0.92% 0.66% 0.68% 0.78% 0.79% 1.11% 0.83%
▇▁▂▁▂▃█▄ Net Charge-Off Ratio (%) 1.31% 0.76% 0.88% 0.81% 0.91% 1.01% 1.45% 1.08%
▂▁▂▃▇███ Tang. Book Value ($M) $583 $545 $576 $605 $741 $743 $769 $765
▁▁▁▁████ Gross Loans ($M) $3,994 $3,983 $3,944 $4,002 $5,266 $5,256 $5,190 $5,248
▁▃▃▃██▇▆ Total Deposits ($M) $4,518 $4,847 $4,925 $4,869 $5,796 $5,661 $5,601 $5,467
Portfolio Composition — Q2'26
Loan Mix%
Real Estate55%
C&I / Commercial22%
Consumer17%
Other6%
Deposit Mix%
Nonint.-Bearing Demand32%
Interest-Bearing (core)64%
Brokered / Other4%
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