Oak Bank
Fitchburg, WI FDIC 35333 $100M-$500M
Quarter Ended
Q2'26
Data as of June 30, 2026
Quarterly Snapshot
Metric Q2'26 YoY Δ Q2'25
Profitability
Return on Assets (%) ▲ 1.28% +0.15 1.14%
Return on Equity (%) ▲ 11.80% +0.54 11.26%
Net Interest Margin (%) ▲ 3.68% +0.28 3.39%
Efficiency Ratio (%) ▲ 56.73% -2.17 58.90%
Pre-Provision Profit ($M) ▲ $2 +0.21 $2
Cost of Funds (%) ▲ 1.58% -0.42 2.00%
Balance Sheet
Total Assets ($M) ▲ $486 +13.47 $473
Gross Loans ($M) ▼ $381 -2.12 $383
Loan Growth YoY (%) ▼ 89.32% -2.60 91.92%
Total Deposits ($M) ▲ $420 +9.25 $410
Shareholders Equity ($M) ▲ $53 +3.87 $49
Tang. Book Value ($M) ▲ $53 +3.87 $49
TBV excl. AOCI ($M)** ▲ $56 +3.88 $52
Loan / Deposit Ratio (%) ▼ 89.32% -2.60 91.92%
Credit Quality
NPA / Total Assets (%) ▲ 0.03% -0.30 0.33%
Allowance / Loans (%) — 1.65% 0.09% 1.56%
Net Charge-Off Ratio (%) ▲ 0.04% -0.36 0.40%
Capital
Tier 1 Capital Ratio (%) ▲ 15.32% +0.57 14.75%
** TBV excl. AOCI adds back unrealised losses on AFS securities to show capital excluding mark-to-market interest rate impact.
8-Quarter Trend
Metric Q3'24 Q4'24 Q1'25 Q2'25 Q3'25 Q4'25 Q1'26 Q2'26
▁▁▅▅▆▇██ Net Interest Margin (%) 2.94% 3.03% 3.36% 3.39% 3.45% 3.52% 3.69% 3.68%
▂▁▃▅▆▄██ Return on Assets (%) 1.04% 0.98% 1.07% 1.14% 1.17% 1.11% 1.26% 1.28%
▄█▆▄▃▇▁▁ Efficiency Ratio (%) 59.1% 61.9% 60.2% 58.9% 58.0% 61.0% 57.2% 56.7%
██▇▅▄▅▂▁ Cost of Funds (%) 2.28% 2.23% 2.13% 2.00% 1.93% 1.99% 1.69% 1.58%
▁████▄▁▁ NPA / Assets (%) 0.00% 0.33% 0.33% 0.33% 0.32% 0.14% 0.00% 0.03%
▁████▄▁▁ Net Charge-Off Ratio (%) 0.00% 0.40% 0.41% 0.40% 0.42% 0.18% 0.00% 0.04%
▃▁▁▄▄▆▆█ Tang. Book Value ($M) $48 $46 $47 $49 $49 $51 $51 $53
█▇▅▇▄▂▁▆ Gross Loans ($M) $390 $386 $377 $383 $374 $369 $363 $381
█▄▃▅█▄▁█ Total Deposits ($M) $419 $408 $404 $410 $419 $407 $398 $420
Portfolio Composition — Q2'26
Loan Mix%
Real Estate83%
C&I / Commercial16%
Deposit Mix%
Nonint.-Bearing Demand21%
Interest-Bearing (core)58%
Brokered / Other21%
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